ComboBox 类

定义

表示 Windows 组合框控件。Represents a Windows combo box control.

public ref class ComboBox : System::Windows::Forms::ListControl
[System.ComponentModel.DefaultBindingProperty("Text")]
[System.Runtime.InteropServices.ComVisible(true)]
[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.AutoDispatch)]
public class ComboBox : System.Windows.Forms.ListControl
type ComboBox = class
    inherit ListControl
Public Class ComboBox
Inherits ListControl
继承
派生
属性

示例

下面的代码示例是一个完整的应用程序,演示如何使用 Add 方法将项添加到 ComboBoxFindString 方法查找 ComboBox中的项以及 BeginUpdateEndUpdate 方法以便有效地添加大量项到 ComboBoxThe following code example is a complete application showing how you can use the Add method to add items to a ComboBox, the FindString method to find items in a ComboBox, and the BeginUpdate and EndUpdate methods to efficiently add a large number items to a ComboBox. 用于存储与显示的文本不同的值的功能从 ListControl继承而来。The ability to store values that are different from displayed text is inherited from ListControl. 有关如何使用此功能的示例,请参阅 ListControl 类。For an example of how to use this feature, see the ListControl class.

若要运行此示例,必须添加对 System.DrawingSystem.Windows.Forms 命名空间的引用。You must add references to the System.Drawing and System.Windows.Forms namespaces to run this example.

#using <System.dll>
#using <System.Drawing.dll>
#using <System.Windows.Forms.dll>

using namespace System;
using namespace System::Windows::Forms;

namespace Win32Form1Namespace
{
   public ref class Win32Form1: public System::Windows::Forms::Form
   {
   private:
      System::Windows::Forms::Button^ addButton;
      System::Windows::Forms::TextBox^ textBox2;
      System::Windows::Forms::Button^ addGrandButton;
      System::Windows::Forms::ComboBox^ comboBox1;
      System::Windows::Forms::Button^ showSelectedButton;
      System::Windows::Forms::TextBox^ textBox1;
      System::Windows::Forms::Button^ findButton;
      System::Windows::Forms::Label ^ label1;

   public:
      Win32Form1()
      {
         this->InitializeComponent();
      }

   private:
      void InitializeComponent()
      {
         this->addButton = gcnew System::Windows::Forms::Button;
         this->textBox2 = gcnew System::Windows::Forms::TextBox;
         this->addGrandButton = gcnew System::Windows::Forms::Button;
         this->comboBox1 = gcnew System::Windows::Forms::ComboBox;
         this->showSelectedButton = gcnew System::Windows::Forms::Button;
         this->textBox1 = gcnew System::Windows::Forms::TextBox;
         this->findButton = gcnew System::Windows::Forms::Button;
         this->label1 = gcnew System::Windows::Forms::Label;
         this->addButton->Location = System::Drawing::Point( 248, 32 );
         this->addButton->Size = System::Drawing::Size( 40, 24 );
         this->addButton->TabIndex = 1;
         this->addButton->Text = "Add";
         this->addButton->Click += gcnew System::EventHandler(
            this, &Win32Form1::addButton_Click );
         this->textBox2->Location = System::Drawing::Point( 8, 64 );
         this->textBox2->Size = System::Drawing::Size( 232, 20 );
         this->textBox2->TabIndex = 6;
         this->textBox2->Text = "";
         this->addGrandButton->Location = System::Drawing::Point( 8, 96 );
         this->addGrandButton->Size = System::Drawing::Size( 280, 23 );
         this->addGrandButton->TabIndex = 2;
         this->addGrandButton->Text = "Add 1, 000 Items";
         this->addGrandButton->Click += gcnew System::EventHandler(
            this, &Win32Form1::addGrandButton_Click );
         this->comboBox1->Anchor = (System::Windows::Forms::AnchorStyles)(
            (System::Windows::Forms::AnchorStyles::Bottom | System::Windows::Forms::AnchorStyles::Left) |
             System::Windows::Forms::AnchorStyles::Right);
         this->comboBox1->DropDownWidth = 280;
         array<Object^>^ objectArray = {"Item 1",
            "Item 2",
            "Item 3",
            "Item 4",
            "Item 5"};
         this->comboBox1->Items->AddRange( objectArray );
         this->comboBox1->Location = System::Drawing::Point( 8, 248 );
         this->comboBox1->Size = System::Drawing::Size( 280, 21 );
         this->comboBox1->TabIndex = 7;
         this->showSelectedButton->Location = System::Drawing::Point( 8, 128 );
         this->showSelectedButton->Size = System::Drawing::Size( 280, 24 );
         this->showSelectedButton->TabIndex = 4;
         this->showSelectedButton->Text = "What Item is Selected?";
         this->showSelectedButton->Click += gcnew System::EventHandler( 
            this, &Win32Form1::showSelectedButton_Click );
         this->textBox1->Location = System::Drawing::Point( 8, 32 );
         this->textBox1->Size = System::Drawing::Size( 232, 20 );
         this->textBox1->TabIndex = 5;
         this->textBox1->Text = "";
         this->findButton->Location = System::Drawing::Point( 248, 64 );
         this->findButton->Size = System::Drawing::Size( 40, 24 );
         this->findButton->TabIndex = 3;
         this->findButton->Text = "Find";
         this->findButton->Click += gcnew System::EventHandler( 
            this, &Win32Form1::findButton_Click );
         this->label1->Location = System::Drawing::Point( 8, 224 );
         this->label1->Size = System::Drawing::Size( 144, 23 );
         this->label1->TabIndex = 0;
         this->label1->Text = "Test ComboBox";
         this->ClientSize = System::Drawing::Size( 292, 273 );
         array<System::Windows::Forms::Control^>^ controlsArray = {this->comboBox1,
            this->textBox2,
            this->textBox1,
            this->showSelectedButton,
            this->findButton,
            this->addGrandButton,
            this->addButton,
            this->label1};
         this->Controls->AddRange( controlsArray );
         this->Text = "ComboBox Sample";
      }

      void addButton_Click( Object^ sender, System::EventArgs^ e )
      {
         comboBox1->Items->Add( textBox1->Text );
      }

      void addGrandButton_Click( Object^ sender, System::EventArgs^ e )
      {
         comboBox1->BeginUpdate();
         for ( int i = 0; i < 1000; i++ )
         {
            comboBox1->Items->Add( "Item 1 " + i.ToString() );

         }
         comboBox1->EndUpdate();
      }

      void findButton_Click( Object^ sender, System::EventArgs^ e )
      {
         int index = comboBox1->FindString( textBox2->Text );
         comboBox1->SelectedIndex = index;
      }

      void showSelectedButton_Click( Object^ sender, System::EventArgs^ e )
      {
         int selectedIndex = comboBox1->SelectedIndex;
         Object^ selectedItem = comboBox1->SelectedItem;
         MessageBox::Show( "Selected Item Text: " + selectedItem->ToString() + "\n" +
            "Index: " + selectedIndex.ToString() );
      }
   };
}


[System::STAThreadAttribute]
int main()
{
   System::Windows::Forms::Application::Run( gcnew Win32Form1Namespace::Win32Form1 );
}
using System;
using System.Windows.Forms;

namespace Win32Form1Namespace {
    
    
    public class Win32Form1 : System.Windows.Forms.Form {
        private System.Windows.Forms.Button addButton;
        private System.Windows.Forms.TextBox textBox2;
        private System.Windows.Forms.Button addGrandButton;
        private System.Windows.Forms.ComboBox comboBox1;
        private System.Windows.Forms.Button showSelectedButton;
        private System.Windows.Forms.TextBox textBox1;
        private System.Windows.Forms.Button findButton;
        private System.Windows.Forms.Label label1;
        
        public Win32Form1() {
            this.InitializeComponent();
        }
        
        [System.STAThreadAttribute()]
        public static void Main() {
            System.Windows.Forms.Application.Run(new Win32Form1());
        }
        
        private void InitializeComponent() {
            this.addButton = new System.Windows.Forms.Button();
            this.textBox2 = new System.Windows.Forms.TextBox();
            this.addGrandButton = new System.Windows.Forms.Button();
            this.comboBox1 = new System.Windows.Forms.ComboBox();
            this.showSelectedButton = new System.Windows.Forms.Button();
            this.textBox1 = new System.Windows.Forms.TextBox();
            this.findButton = new System.Windows.Forms.Button();
            this.label1 = new System.Windows.Forms.Label();
            this.addButton.Location = new System.Drawing.Point(248, 32);
            this.addButton.Size = new System.Drawing.Size(40, 24);
            this.addButton.TabIndex = 1;
            this.addButton.Text = "Add";
            this.addButton.Click += new System.EventHandler(this.addButton_Click);
            this.textBox2.Location = new System.Drawing.Point(8, 64);
            this.textBox2.Size = new System.Drawing.Size(232, 20);
            this.textBox2.TabIndex = 6;
            this.textBox2.Text = "";
            this.addGrandButton.Location = new System.Drawing.Point(8, 96);
            this.addGrandButton.Size = new System.Drawing.Size(280, 23);
            this.addGrandButton.TabIndex = 2;
            this.addGrandButton.Text = "Add 1,000 Items";
            this.addGrandButton.Click += new System.EventHandler(this.addGrandButton_Click);
            this.comboBox1.Anchor = ((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left) 
                        | System.Windows.Forms.AnchorStyles.Right);
            this.comboBox1.DropDownWidth = 280;
            this.comboBox1.Items.AddRange(new object[] {"Item 1",
                        "Item 2",
                        "Item 3",
                        "Item 4",
                        "Item 5"});
            this.comboBox1.Location = new System.Drawing.Point(8, 248);
            this.comboBox1.Size = new System.Drawing.Size(280, 21);
            this.comboBox1.TabIndex = 7;
            this.showSelectedButton.Location = new System.Drawing.Point(8, 128);
            this.showSelectedButton.Size = new System.Drawing.Size(280, 24);
            this.showSelectedButton.TabIndex = 4;
            this.showSelectedButton.Text = "What Item is Selected?";
            this.showSelectedButton.Click += new System.EventHandler(this.showSelectedButton_Click);
            this.textBox1.Location = new System.Drawing.Point(8, 32);
            this.textBox1.Size = new System.Drawing.Size(232, 20);
            this.textBox1.TabIndex = 5;
            this.textBox1.Text = "";
            this.findButton.Location = new System.Drawing.Point(248, 64);
            this.findButton.Size = new System.Drawing.Size(40, 24);
            this.findButton.TabIndex = 3;
            this.findButton.Text = "Find";
            this.findButton.Click += new System.EventHandler(this.findButton_Click);
            this.label1.Location = new System.Drawing.Point(8, 224);
            this.label1.Size = new System.Drawing.Size(144, 23);
            this.label1.TabIndex = 0;
            this.label1.Text = "Test ComboBox";
            this.ClientSize = new System.Drawing.Size(292, 273);
            this.Controls.AddRange(new System.Windows.Forms.Control[] {this.comboBox1,
                        this.textBox2,
                        this.textBox1,
                        this.showSelectedButton,
                        this.findButton,
                        this.addGrandButton,
                        this.addButton,
                        this.label1});
            this.Text = "ComboBox Sample";
        }
        
        private void addButton_Click(object sender, System.EventArgs e) {
           comboBox1.Items.Add(textBox1.Text);
        }

        private void addGrandButton_Click(object sender, System.EventArgs e) {
            comboBox1.BeginUpdate();
            for (int i = 0; i < 1000; i++) {
                comboBox1.Items.Add("Item 1" + i.ToString());
            }
            comboBox1.EndUpdate();
        }

        private void findButton_Click(object sender, System.EventArgs e) {
            int index = comboBox1.FindString(textBox2.Text);
            comboBox1.SelectedIndex = index;
        }

        private void showSelectedButton_Click(object sender, System.EventArgs e) {
            int selectedIndex = comboBox1.SelectedIndex;
            Object selectedItem = comboBox1.SelectedItem;

            MessageBox.Show("Selected Item Text: " + selectedItem.ToString() + "\n" +
                            "Index: " + selectedIndex.ToString());
        }
    }
}
Imports System.Windows.Forms

Namespace ComboBoxSampleNamespace

    Public Class ComboBoxSample
        Inherits System.Windows.Forms.Form

        Private addButton As System.Windows.Forms.Button
        Private textBox2 As System.Windows.Forms.TextBox
        Private addGrandButton As System.Windows.Forms.Button
        Private comboBox1 As System.Windows.Forms.ComboBox
        Private showSelectedButton As System.Windows.Forms.Button
        Private textBox1 As System.Windows.Forms.TextBox
        Private findButton As System.Windows.Forms.Button
        Private label1 As System.Windows.Forms.Label

        Public Sub New()
            MyBase.New()
            Me.InitializeComponent()
        End Sub

        <System.STAThreadAttribute()> Public Shared Sub Main()
            System.Windows.Forms.Application.Run(New ComboBoxSample())
        End Sub

        Private Sub InitializeComponent()
            Me.addButton = New System.Windows.Forms.Button()
            Me.textBox2 = New System.Windows.Forms.TextBox()
            Me.addGrandButton = New System.Windows.Forms.Button()
            Me.comboBox1 = New System.Windows.Forms.ComboBox()
            Me.showSelectedButton = New System.Windows.Forms.Button()
            Me.textBox1 = New System.Windows.Forms.TextBox()
            Me.findButton = New System.Windows.Forms.Button()
            Me.label1 = New System.Windows.Forms.Label()
            Me.addButton.Location = New System.Drawing.Point(248, 32)
            Me.addButton.Size = New System.Drawing.Size(40, 24)
            Me.addButton.TabIndex = 1
            Me.addButton.Text = "Add"
            AddHandler Me.addButton.Click, AddressOf Me.addButton_Click
            Me.textBox2.Location = New System.Drawing.Point(8, 64)
            Me.textBox2.Size = New System.Drawing.Size(232, 20)
            Me.textBox2.TabIndex = 6
            Me.textBox2.Text = ""
            Me.addGrandButton.Location = New System.Drawing.Point(8, 96)
            Me.addGrandButton.Size = New System.Drawing.Size(280, 23)
            Me.addGrandButton.TabIndex = 2
            Me.addGrandButton.Text = "Add 1,000 Items"
            AddHandler Me.addGrandButton.Click, AddressOf Me.addGrandButton_Click
            Me.comboBox1.Anchor = ((System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Left) _
                        Or System.Windows.Forms.AnchorStyles.Right)
            Me.comboBox1.DropDownWidth = 280
            Me.comboBox1.Items.AddRange(New Object() {"Item 1", "Item 2", "Item 3", "Item 4", "Item 5"})
            Me.comboBox1.Location = New System.Drawing.Point(8, 248)
            Me.comboBox1.Size = New System.Drawing.Size(280, 21)
            Me.comboBox1.TabIndex = 7
            Me.showSelectedButton.Location = New System.Drawing.Point(8, 128)
            Me.showSelectedButton.Size = New System.Drawing.Size(280, 24)
            Me.showSelectedButton.TabIndex = 4
            Me.showSelectedButton.Text = "What Item is Selected?"
            AddHandler Me.showSelectedButton.Click, AddressOf Me.showSelectedButton_Click
            Me.textBox1.Location = New System.Drawing.Point(8, 32)
            Me.textBox1.Size = New System.Drawing.Size(232, 20)
            Me.textBox1.TabIndex = 5
            Me.textBox1.Text = ""
            Me.findButton.Location = New System.Drawing.Point(248, 64)
            Me.findButton.Size = New System.Drawing.Size(40, 24)
            Me.findButton.TabIndex = 3
            Me.findButton.Text = "Find"
            AddHandler Me.findButton.Click, AddressOf Me.findButton_Click
            Me.label1.Location = New System.Drawing.Point(8, 224)
            Me.label1.Size = New System.Drawing.Size(144, 23)
            Me.label1.TabIndex = 0
            Me.label1.Text = "Test ComboBox"
            Me.ClientSize = New System.Drawing.Size(292, 273)
            Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.comboBox1, Me.textBox2, Me.textBox1, Me.showSelectedButton, Me.findButton, Me.addGrandButton, Me.addButton, Me.label1})
            Me.Text = "ComboBox Sample"
        End Sub

        Private Sub addButton_Click(ByVal sender As Object, ByVal e As System.EventArgs)
            comboBox1.Items.Add(textBox1.Text)
        End Sub

        Private Sub findButton_Click(ByVal sender As Object, ByVal e As System.EventArgs)
            Dim index As Integer
            index = comboBox1.FindString(textBox2.Text)
            comboBox1.SelectedIndex = index
        End Sub

        Private Sub addGrandButton_Click(ByVal sender As Object, ByVal e As System.EventArgs)
            comboBox1.BeginUpdate()
            Dim I As Integer
            For I = 0 To 1000
                comboBox1.Items.Add("Item 1" + i.ToString())
            Next
            comboBox1.EndUpdate()
        End Sub

        Private Sub showSelectedButton_Click(ByVal sender As Object, ByVal e As System.EventArgs)
            Dim selectedIndex As Integer
            selectedIndex = comboBox1.SelectedIndex
            Dim selectedItem As Object
            selectedItem = comboBox1.SelectedItem

            MessageBox.Show("Selected Item Text: " & selectedItem.ToString() & Microsoft.VisualBasic.Constants.vbCrLf & _
                                "Index: " & selectedIndex.ToString())
        End Sub
    End Class
End Namespace

注解

ComboBox 显示与 ListBox组合的文本框,使用户可以从列表中选择项或输入新值。A ComboBox displays a text box combined with a ListBox, which enables the user to select items from the list or enter a new value.

DropDownStyle 属性指定是始终显示列表还是显示列表显示在下拉列表中。The DropDownStyle property specifies whether the list is always displayed or whether the list is displayed in a drop-down. DropDownStyle 属性还指定是否可以编辑文本部分。The DropDownStyle property also specifies whether the text portion can be edited. 请参阅 ComboBoxStyle,了解可用设置及其影响。See ComboBoxStyle for the available settings and their effects. 没有始终显示列表的设置,不允许输入新值。There is no setting to always display the list and disallow entering a new value. 若要显示无法添加新值的列表,请使用 ListBox 控件。To display a list to which no new values can be added, use a ListBox control.

若要在运行时在列表中添加或删除对象,请使用 ComboBox.ObjectCollection 类的方法(通过 ComboBoxItems 属性)。To add or remove objects in the list at run time, use methods of the ComboBox.ObjectCollection class (through the Items property of the ComboBox). 您可以使用 AddRange 方法分配对象引用数组。You can assign an array of object references with the AddRange method. 然后,列表显示每个对象的默认字符串值。The list then displays the default string value for each object. 可以用 Add 方法添加单个对象。You can add individual objects with the Add method. 您可以删除具有 Remove 方法的项,或通过 Clear 方法清除整个列表。You can delete items with the Remove method or clear the entire list with the Clear method.

除了显示和选择功能外,ComboBox 还提供了一些功能,使您能够有效地将项添加到 ComboBox 并在列表的项中查找文本。In addition to display and selection functionality, the ComboBox also provides features that enable you to efficiently add items to the ComboBox and to find text within the items of the list. 使用 BeginUpdateEndUpdate 方法,您可以将大量的项添加到 ComboBox,而不会在每次向列表中添加项时重新绘制控件。With the BeginUpdate and EndUpdate methods, you can add a large number of items to the ComboBox without the control being repainted each time an item is added to the list. 使用 FindStringFindStringExact 方法,您可以搜索列表中包含特定搜索字符串的项。The FindString and FindStringExact methods enable you to search for an item in the list that contains a specific search string.

您可以使用这些属性来管理列表中当前选定的项、Text 属性来指定编辑字段中显示的字符串、用于获取或设置当前项的 SelectedIndex 属性,以及用于获取或设置对的引用的 SelectedItem 属性对象.You can use these properties to manage the currently selected item in the list, the Text property to specify the string displayed in the editing field, the SelectedIndex property to get or set the current item, and the SelectedItem property to get or set a reference to the object.

备注

如果在基 Windows 窗体页上有 ListBoxComboBoxCheckedListBox,并且想要在派生窗体中修改这些控件的字符串集合,则基窗体中这些控件的字符串集合必须为空。If you have a ListBox, ComboBox, or CheckedListBox on a base Windows Forms page and want to modify the string collections of those controls in a derived form, the string collections of those controls in the base form must be empty. 如果字符串集合不为空,则当您派生其他窗体时,它们将变为只读。If the string collections are not empty, they become read-only when you derive another form.

构造函数

ComboBox()

初始化 ComboBox 类的新实例。Initializes a new instance of the ComboBox class.

属性

AccessibilityObject

获取分配给该控件的 AccessibleObjectGets the AccessibleObject assigned to the control.

(继承自 Control)
AccessibleDefaultActionDescription

获取或设置控件的默认操作说明以供具有辅助功能的客户端应用程序使用。Gets or sets the default action description of the control for use by accessibility client applications.

(继承自 Control)
AccessibleDescription

获取或设置辅助功能客户端应用程序使用的控件说明。Gets or sets the description of the control used by accessibility client applications.

(继承自 Control)
AccessibleName

获取或设置辅助功能客户端应用程序所使用的控件名称。Gets or sets the name of the control used by accessibility client applications.

(继承自 Control)
AccessibleRole

获取或设置控件的辅助性角色。Gets or sets the accessible role of the control.

(继承自 Control)
AllowDrop

获取或设置一个值,该值指示控件是否可以接受用户拖放到它上面的数据。Gets or sets a value indicating whether the control can accept data that the user drags onto it.

(继承自 Control)
AllowSelection

获取一个值,该值指示列表是否启用列表项的选择。Gets a value indicating whether the list enables selection of list items.

(继承自 ListControl)
Anchor

获取或设置控件绑定到的容器的边缘并确定控件如何随其父级一起调整大小。Gets or sets the edges of the container to which a control is bound and determines how a control is resized with its parent.

(继承自 Control)
AutoCompleteCustomSource

获取或设置一个自定义 StringCollection,以便在 AutoCompleteSource 属性被设置为 CustomSource 时使用。Gets or sets a custom StringCollection to use when the AutoCompleteSource property is set to CustomSource.

AutoCompleteMode

获取或设置一个选项,该选项控制自动完成应用于 ComboBox 的方式。Gets or sets an option that controls how automatic completion works for the ComboBox.

AutoCompleteSource

获取或设置一个值,该值指定用于自动完成的完整字符串的源。Gets or sets a value specifying the source of complete strings used for automatic completion.

AutoScrollOffset

获取或设置一个值,该值指示在 ScrollControlIntoView(Control) 中将控件滚动到何处。Gets or sets where this control is scrolled to in ScrollControlIntoView(Control).

(继承自 Control)
AutoSize

此属性与此类无关。This property is not relevant for this class.

(继承自 Control)
BackColor

获取或设置控件的背景色。Gets or sets the background color for the control.

BackgroundImage

此属性与此类无关。This property is not relevant to this class.

BackgroundImageLayout

获取或设置在 ImageLayout 枚举中定义的背景图像布局。Gets or sets the background image layout as defined in the ImageLayout enumeration.

BindingContext

获取或设置控件的 BindingContextGets or sets the BindingContext for the control.

(继承自 Control)
Bottom

获取控件下边缘与其容器的工作区上边缘之间的距离(以像素为单位)。Gets the distance, in pixels, between the bottom edge of the control and the top edge of its container's client area.

(继承自 Control)
Bounds

获取或设置控件(包括其非工作区元素)相对于其父控件的大小和位置(以像素为单位)。Gets or sets the size and location of the control including its nonclient elements, in pixels, relative to the parent control.

(继承自 Control)
CanEnableIme

获取一个用以指示是否可以将 ImeMode 属性设置为活动值的值,以启用 IME 支持。Gets a value indicating whether the ImeMode property can be set to an active value, to enable IME support.

(继承自 Control)
CanFocus

获取一个值,该值指示控件是否可以接收焦点。Gets a value indicating whether the control can receive focus.

(继承自 Control)
CanRaiseEvents

确定是否可以在控件上引发事件。Determines if events can be raised on the control.

(继承自 Control)
CanSelect

获取一个值,该值指示是否可以选中控件。Gets a value indicating whether the control can be selected.

(继承自 Control)
Capture

获取或设置一个值,该值指示控件是否已捕获鼠标。Gets or sets a value indicating whether the control has captured the mouse.

(继承自 Control)
CausesValidation

获取或设置一个值,该值指示控件是否会引起在任何需要在接收焦点时执行验证的控件上执行验证。Gets or sets a value indicating whether the control causes validation to be performed on any controls that require validation when it receives focus.

(继承自 Control)
ClientRectangle

获取表示控件的工作区的矩形。Gets the rectangle that represents the client area of the control.

(继承自 Control)
ClientSize

获取或设置控件的工作区的高度和宽度。Gets or sets the height and width of the client area of the control.

(继承自 Control)
CompanyName

获取包含控件的应用程序的公司名称或创建者。Gets the name of the company or creator of the application containing the control.

(继承自 Control)
Container

获取 IContainer,它包含 ComponentGets the IContainer that contains the Component.

(继承自 Component)
ContainsFocus

获取一个值,该值指示控件或它的一个子控件当前是否有输入焦点。Gets a value indicating whether the control, or one of its child controls, currently has the input focus.

(继承自 Control)
ContextMenu

获取或设置与控件关联的快捷菜单。Gets or sets the shortcut menu associated with the control.

(继承自 Control)
ContextMenuStrip

获取或设置与此控件关联的 ContextMenuStripGets or sets the ContextMenuStrip associated with this control.

(继承自 Control)
Controls

获取包含在控件内的控件的集合。Gets the collection of controls contained within the control.

(继承自 Control)
Created

获取一个值,该值指示控件是否已经创建。Gets a value indicating whether the control has been created.

(继承自 Control)
CreateParams

获取创建控件句柄时所需要的创建参数。Gets the required creation parameters when the control handle is created.

Cursor

获取或设置当鼠标指针位于控件上时显示的光标。Gets or sets the cursor that is displayed when the mouse pointer is over the control.

(继承自 Control)
DataBindings

为该控件获取数据绑定。Gets the data bindings for the control.

(继承自 Control)
DataManager

获取与此控件关联的 CurrencyManagerGets the CurrencyManager associated with this control.

(继承自 ListControl)
DataSource

获取或设置此 ComboBox 的数据源。Gets or sets the data source for this ComboBox.

DefaultCursor

获取或设置控件的默认光标。Gets or sets the default cursor for the control.

(继承自 Control)
DefaultImeMode

获取控件支持的默认输入法编辑器 (IME) 模式。Gets the default Input Method Editor (IME) mode supported by the control.

(继承自 Control)
DefaultMargin

获取控件之间默认指定的间距(以像素为单位)。Gets the space, in pixels, that is specified by default between controls.

(继承自 Control)
DefaultMaximumSize

获取以像素为单位的长度和高度,此长度和高度被指定为控件的默认最大大小。Gets the length and height, in pixels, that is specified as the default maximum size of a control.

(继承自 Control)
DefaultMinimumSize

获取以像素为单位的长度和高度,此长度和高度被指定为控件的默认最小大小。Gets the length and height, in pixels, that is specified as the default minimum size of a control.

(继承自 Control)
DefaultPadding

获取控件内容的内部间距(以像素为单位)。Gets the internal spacing, in pixels, of the contents of a control.

(继承自 Control)
DefaultSize

获取控件的默认大小。Gets the default size of the control.

DesignMode

获取一个值,用以指示 Component 当前是否处于设计模式。Gets a value that indicates whether the Component is currently in design mode.

(继承自 Component)
DeviceDpi

获取显示当前控件的显示设备的 DPI 值。Gets the DPI value for the display device where the control is currently being displayed.

(继承自 Control)
DisplayMember

获取或设置要为此 ListControl 显示的属性。Gets or sets the property to display for this ListControl.

(继承自 ListControl)
DisplayRectangle

获取表示控件的显示区域的矩形。Gets the rectangle that represents the display area of the control.

(继承自 Control)
Disposing

获取一个值,该值指示 Control 基类是否在释放进程中。Gets a value indicating whether the base Control class is in the process of disposing.

(继承自 Control)
Dock

获取或设置哪些控件边框停靠到其父控件并确定控件如何随其父级一起调整大小。Gets or sets which control borders are docked to its parent control and determines how a control is resized with its parent.

(继承自 Control)
DoubleBuffered

获取或设置一个值,该值指示此控件是否应使用辅助缓冲区重绘其图面,以减少或避免闪烁。Gets or sets a value indicating whether this control should redraw its surface using a secondary buffer to reduce or prevent flicker.

(继承自 Control)
DrawMode

获取或设置一个值,该值指示指示代码或操作系统是否会处理列表中的元素的绘制。Gets or sets a value indicating whether your code or the operating system will handle drawing of elements in the list.

DropDownHeight

获取或设置 ComboBox 的下拉部分的高度(以像素为单位)。Gets or sets the height in pixels of the drop-down portion of the ComboBox.

DropDownStyle

获取或设置指定组合框样式的值。Gets or sets a value specifying the style of the combo box.

DropDownWidth

获取或设置组合框下拉部分的宽度。Gets or sets the width of the of the drop-down portion of a combo box.

DroppedDown

获取或设置一个值,该值指示组合框是否正在显示其下拉部分。Gets or sets a value indicating whether the combo box is displaying its drop-down portion.

Enabled

获取或设置一个值,该值指示控件是否可以对用户交互作出响应。Gets or sets a value indicating whether the control can respond to user interaction.

(继承自 Control)
Events

获取附加到此 Component 的事件处理程序的列表。Gets the list of event handlers that are attached to this Component.

(继承自 Component)
FlatStyle

获取或设置 ComboBox 的外观。Gets or sets the appearance of the ComboBox.

Focused

获取一个值,该值指示 ComboBox 是否具有焦点。Gets a value indicating whether the ComboBox has focus.

Font

获取或设置控件显示的文字的字体。Gets or sets the font of the text displayed by the control.

(继承自 Control)
FontHeight

获取或设置控件的字体的高度。Gets or sets the height of the font of the control.

(继承自 Control)
ForeColor

获取或设置控件的前景色。Gets or sets the foreground color of the control.

FormatInfo

获取或设置提供自定义格式设置行为的 IFormatProviderGets or sets the IFormatProvider that provides custom formatting behavior.

(继承自 ListControl)
FormatString

获取或设置指示显示值的方式的格式说明符字符。Gets or sets the format-specifier characters that indicate how a value is to be displayed.

(继承自 ListControl)
FormattingEnabled

获取或设置一个值,该值指示是否将格式设置应用于 DisplayMemberListControl 属性。Gets or sets a value indicating whether formatting is applied to the DisplayMember property of the ListControl.

(继承自 ListControl)
Handle

获取控件绑定到的窗口句柄。Gets the window handle that the control is bound to.

(继承自 Control)
HasChildren

获取一个值,该值指示控件是否包含一个或多个子控件。Gets a value indicating whether the control contains one or more child controls.

(继承自 Control)
Height

获取或设置控件的高度。Gets or sets the height of the control.

(继承自 Control)
ImeMode

获取或设置控件的输入法编辑器 (IME) 模式。Gets or sets the Input Method Editor (IME) mode of the control.

(继承自 Control)
ImeModeBase

获取或设置控件的 IME 模式。Gets or sets the IME mode of a control.

(继承自 Control)
IntegralHeight

获取或设置一个值,该值指示控件是否应调整大小以避免只显示项的局部。Gets or sets a value indicating whether the control should resize to avoid showing partial items.

InvokeRequired

获取一个值,该值指示调用方在对控件进行方法调用时是否必须调用 Invoke 方法,因为调用方位于创建控件所在的线程以外的线程中。Gets a value indicating whether the caller must call an invoke method when making method calls to the control because the caller is on a different thread than the one the control was created on.

(继承自 Control)
IsAccessible

获取或设置一个值,该值指示控件对辅助功能应用程序是否可见。Gets or sets a value indicating whether the control is visible to accessibility applications.

(继承自 Control)
IsDisposed

获取一个值,该值指示控件是否已经被释放。Gets a value indicating whether the control has been disposed of.

(继承自 Control)
IsHandleCreated

获取一个值,该值指示控件是否有与它关联的句柄。Gets a value indicating whether the control has a handle associated with it.

(继承自 Control)
IsMirrored

获取一个值,该值指示此控件是否为镜像控件。Gets a value indicating whether the control is mirrored.

(继承自 Control)
ItemHeight

获取或设置组合框中的某项的高度。Gets or sets the height of an item in the combo box.

Items

获取一个对象,该对象表示此 ComboBox 中所含的项的集合。Gets an object representing the collection of the items contained in this ComboBox.

LayoutEngine

获取控件的布局引擎的缓存实例。Gets a cached instance of the control's layout engine.

(继承自 Control)
Left

获取或设置控件左边缘与其容器的工作区左边缘之间的距离(以像素为单位)。Gets or sets the distance, in pixels, between the left edge of the control and the left edge of its container's client area.

(继承自 Control)
Location

获取或设置该控件的左上角相对于其容器的左上角的坐标。Gets or sets the coordinates of the upper-left corner of the control relative to the upper-left corner of its container.

(继承自 Control)
Margin

获取或设置控件之间的空间。Gets or sets the space between controls.

(继承自 Control)
MaxDropDownItems

获取或设置要在 ComboBox 的下拉部分中显示的最大项数。Gets or sets the maximum number of items to be shown in the drop-down portion of the ComboBox.

MaximumSize

获取或设置 GetPreferredSize(Size) 方法可指定的上限大小。Gets or sets the size that is the upper limit that the GetPreferredSize(Size) method can specify.

MaxLength

获取或设置用户可键入 ComboBox 中的字符数。Gets or sets the number of characters a user can type into the ComboBox.

MinimumSize

获取或设置 GetPreferredSize(Size) 方法可指定的下限大小。Gets or sets the size that is the lower limit that the GetPreferredSize(Size) method can specify.

Name

获取或设置控件的名称。Gets or sets the name of the control.

(继承自 Control)
Padding

此属性与此类无关。This property is not relevant for this class.

Parent

获取或设置控件的父容器。Gets or sets the parent container of the control.

(继承自 Control)
PreferredHeight

获取 ComboBox 的首选高度。Gets the preferred height of the ComboBox.

PreferredSize

获取可以容纳控件的矩形区域的大小。Gets the size of a rectangular area into which the control can fit.

(继承自 Control)
ProductName

获取包含控件的程序集的产品名称。Gets the product name of the assembly containing the control.

(继承自 Control)
ProductVersion

获取包含控件的程序集的版本。Gets the version of the assembly containing the control.

(继承自 Control)
RecreatingHandle

获取一个值,该值指示控件当前是否在重新创建其句柄。Gets a value indicating whether the control is currently re-creating its handle.

(继承自 Control)
Region

获取或设置与控件关联的窗口区域。Gets or sets the window region associated with the control.

(继承自 Control)
RenderRightToLeft

此属性现已过时。This property is now obsolete.

(继承自 Control)
ResizeRedraw

获取或设置一个值,该值指示控件在调整大小时是否重绘自己。Gets or sets a value indicating whether the control redraws itself when resized.

(继承自 Control)
Right

获取控件右边缘与其容器的工作区左边缘之间的距离(以像素为单位)。Gets the distance, in pixels, between the right edge of the control and the left edge of its container's client area.

(继承自 Control)
RightToLeft

获取或设置一个值,该值指示是否将控件的元素对齐以支持使用从右向左的字体的区域设置。Gets or sets a value indicating whether control's elements are aligned to support locales using right-to-left fonts.

(继承自 Control)
ScaleChildren

获取一个值,该值确定子控件的缩放。Gets a value that determines the scaling of child controls.

(继承自 Control)
SelectedIndex

获取或设置指定当前选定项的索引。Gets or sets the index specifying the currently selected item.

SelectedItem

获取或设置 ComboBox 中当前选定的项。Gets or sets currently selected item in the ComboBox.

SelectedText

获取或设置 ComboBox 的可编辑部分中选定的文本。Gets or sets the text that is selected in the editable portion of a ComboBox.

SelectedValue

获取或设置由 ValueMember 属性指定的成员属性的值。Gets or sets the value of the member property specified by the ValueMember property.

(继承自 ListControl)
SelectionLength

获取或设置组合框可编辑部分中选定的字符数。Gets or sets the number of characters selected in the editable portion of the combo box.

SelectionStart

获取或设置组合框中选定文本的起始索引。Gets or sets the starting index of text selected in the combo box.

ShowFocusCues

获取一个值,该值指示控件是否应显示聚焦框。Gets a value indicating whether the control should display focus rectangles.

(继承自 Control)
ShowKeyboardCues

获取一个值,该值指示用户界面是否处于适当的状态以显示或隐藏键盘快捷键。Gets a value indicating whether the user interface is in the appropriate state to show or hide keyboard accelerators.

(继承自 Control)
Site

获取或设置控件的站点。Gets or sets the site of the control.

(继承自 Control)
Size

获取或设置控件的高度和宽度。Gets or sets the height and width of the control.

(继承自 Control)
Sorted

获取或设置指示是否对组合框中的项进行了排序的值。Gets or sets a value indicating whether the items in the combo box are sorted.

TabIndex

获取或设置控件在其容器内的 Tab 键顺序。Gets or sets the tab order of the control within its container.

(继承自 Control)
TabStop

获取或设置一个值,该值指示用户能否使用 Tab 键将焦点放到该控件上。Gets or sets a value indicating whether the user can give the focus to this control using the TAB key.

(继承自 Control)
Tag

获取或设置包含有关控件的数据的对象。Gets or sets the object that contains data about the control.

(继承自 Control)
Text

获取或设置与此控件关联的文本。Gets or sets the text associated with this control.

Top

获取或设置控件上边缘与其容器的工作区上边缘之间的距离(以像素为单位)。Gets or sets the distance, in pixels, between the top edge of the control and the top edge of its container's client area.

(继承自 Control)
TopLevelControl

获取没有另一个 Windows 窗体控件作为其父级的父控件。Gets the parent control that is not parented by another Windows Forms control. 通常,这是控件所在的最外面的 FormTypically, this is the outermost Form that the control is contained in.

(继承自 Control)
UseWaitCursor

获取或设置一个值,该值指示是否将等待光标用于当前控件以及所有子控件。Gets or sets a value indicating whether to use the wait cursor for the current control and all child controls.

(继承自 Control)
ValueMember

获取或设置属性的路径,它将用作 ListControl 中的项的实际值。Gets or sets the path of the property to use as the actual value for the items in the ListControl.

(继承自 ListControl)
Visible

获取或设置一个值,该值指示是否显示该控件及其所有子控件。Gets or sets a value indicating whether the control and all its child controls are displayed.

(继承自 Control)
Width

获取或设置控件的宽度。Gets or sets the width of the control.

(继承自 Control)
WindowTarget

此属性与此类无关。This property is not relevant for this class.

(继承自 Control)

方法

AccessibilityNotifyClients(AccessibleEvents, Int32)

就指定子控件的指定 AccessibleEvents 通知辅助功能客户端应用程序。Notifies the accessibility client applications of the specified AccessibleEvents for the specified child control.

(继承自 Control)
AccessibilityNotifyClients(AccessibleEvents, Int32, Int32)

就指定子控件的指定 AccessibleEvents 通知辅助功能客户端应用程序。Notifies the accessibility client applications of the specified AccessibleEvents for the specified child control .

(继承自 Control)
AddItemsCore(Object[])

将指定项添加到组合框。Adds the specified items to the combo box.

BeginInvoke(Delegate)

在创建控件的基础句柄所在线程上异步执行指定委托。Executes the specified delegate asynchronously on the thread that the control's underlying handle was created on.

(继承自 Control)
BeginInvoke(Delegate, Object[])

在创建控件的基础句柄所在线程上,用指定的参数异步执行指定委托。Executes the specified delegate asynchronously with the specified arguments, on the thread that the control's underlying handle was created on.

(继承自 Control)
BeginUpdate()

将各项逐一添加到 ComboBox 时维持性能。Maintains performance when items are added to the ComboBox one at a time.

BringToFront()

将控件带到 Z 顺序的前面。Brings the control to the front of the z-order.

(继承自 Control)
Contains(Control)

检索一个值,该值指示指定控件是否为一个控件的子控件。Retrieves a value indicating whether the specified control is a child of the control.

(继承自 Control)
CreateAccessibilityInstance()

为该控件创建一个新的辅助功能对象。Creates a new accessibility object for the control.

CreateControl()

强制创建可见控件,包括创建句柄和任何可见子控件。Forces the creation of the visible control, including the creation of the handle and any visible child controls.

(继承自 Control)
CreateControlsInstance()

为控件创建控件集合的新实例。Creates a new instance of the control collection for the control.

(继承自 Control)
CreateGraphics()

为控件创建 GraphicsCreates the Graphics for the control.

(继承自 Control)
CreateHandle()

为该控件创建句柄。Creates a handle for the control.

CreateObjRef(Type)

创建一个对象,该对象包含生成用于与远程对象进行通信的代理所需的全部相关信息。Creates an object that contains all the relevant information required to generate a proxy used to communicate with a remote object.

(继承自 MarshalByRefObject)
DefWndProc(Message)

向默认窗口过程发送指定消息。Sends the specified message to the default window procedure.

(继承自 Control)
DestroyHandle()

毁坏与该控件关联的句柄。Destroys the handle associated with the control.

(继承自 Control)
Dispose()

释放由 Component 使用的所有资源。Releases all resources used by the Component.

(继承自 Component)
Dispose(Boolean)

释放由 ComboBox 占用的非托管资源,还可以另外再释放托管资源。Releases the unmanaged resources used by the ComboBox and optionally releases the managed resources.

DoDragDrop(Object, DragDropEffects)

开始拖放操作。Begins a drag-and-drop operation.

(继承自 Control)
DrawToBitmap(Bitmap, Rectangle)

支持对指定位图的呈现。Supports rendering to the specified bitmap.

(继承自 Control)
EndInvoke(IAsyncResult)

检索由传递的 IAsyncResult 表示的异步操作的返回值。Retrieves the return value of the asynchronous operation represented by the IAsyncResult passed.

(继承自 Control)
EndUpdate()

BeginUpdate() 方法挂起绘制后,该方法恢复绘制 ComboBox 控件。Resumes painting the ComboBox control after painting is suspended by the BeginUpdate() method.

Equals(Object)

确定指定的对象是否等于当前对象。Determines whether the specified object is equal to the current object.

(继承自 Object)
FilterItemOnProperty(Object)

如果 ListControl 项是被给定了该项的对象的属性,则检索该项的当前值。Retrieves the current value of the ListControl item, if it is a property of an object, given the item.

(继承自 ListControl)
FilterItemOnProperty(Object, String)

如果 ListControl 项是被给定了该项以及属性名称的对象的属性,则返回该项的当前值。Returns the current value of the ListControl item, if it is a property of an object given the item and the property name.

(继承自 ListControl)
FindForm()

检索控件所在的窗体。Retrieves the form that the control is on.

(继承自 Control)
FindString(String)

返回以指定字符串开头的 ComboBox 中的第一项的索引。Returns the index of the first item in the ComboBox that starts with the specified string.

FindString(String, Int32)

除含指定字符串的指定索引以外,返回 ComboBox 中的第一个项的索引。Returns the index of the first item in the ComboBox beyond the specified index that contains the specified string. 该搜索不区分大小写。The search is not case sensitive.

FindStringExact(String)

查找组合框中与指定字符串匹配的第一项。Finds the first item in the combo box that matches the specified string.

FindStringExact(String, Int32)

查找指定索引后与指定字符串匹配的第一项。Finds the first item after the specified index that matches the specified string.

Focus()

为控件设置输入焦点。Sets input focus to the control.

(继承自 Control)
GetAccessibilityObjectById(Int32)

检索指定的 AccessibleObjectRetrieves the specified AccessibleObject.

(继承自 Control)
GetAutoSizeMode()

检索一个值,该值指示当启用控件的 AutoSize 属性时控件的行为方式。Retrieves a value indicating how a control will behave when its AutoSize property is enabled.

(继承自 Control)
GetChildAtPoint(Point)

检索位于指定坐标处的子控件。Retrieves the child control that is located at the specified coordinates.

(继承自 Control)
GetChildAtPoint(Point, GetChildAtPointSkip)

检索位于指定坐标的子控件,并且指定是否忽略特定类型的子控件。Retrieves the child control that is located at the specified coordinates, specifying whether to ignore child controls of a certain type.

(继承自 Control)
GetContainerControl()

沿着控件的父控件链向上,返回下一个 ContainerControlReturns the next ContainerControl up the control's chain of parent controls.

(继承自 Control)
GetHashCode()

用作默认哈希函数。Serves as the default hash function.

(继承自 Object)
GetItemHeight(Int32)

返回 ComboBox 中某项的高度。Returns the height of an item in the ComboBox.

GetItemText(Object)

返回指定项的文本表示形式。Returns the text representation of the specified item.

(继承自 ListControl)
GetLifetimeService()

检索控制此实例的生存期策略的当前生存期服务对象。Retrieves the current lifetime service object that controls the lifetime policy for this instance.

(继承自 MarshalByRefObject)
GetNextControl(Control, Boolean)

按照子控件的 Tab 键顺序向前或向后检索下一个控件。Retrieves the next control forward or back in the tab order of child controls.

(继承自 Control)
GetPreferredSize(Size)

检索适合控件的矩形区域的大小。Retrieves the size of a rectangular area into which a control can be fitted.

(继承自 Control)
GetScaledBounds(Rectangle, SizeF, BoundsSpecified)

检索缩放控件时的边界。Retrieves the bounds within which the control is scaled.

(继承自 Control)
GetService(Type)

返回一个对象,该对象表示由 Component 或它的 Container 提供的服务。Returns an object that represents a service provided by the Component or by its Container.

(继承自 Component)
GetStyle(ControlStyles)

为控件检索指定控件样式位的值。Retrieves the value of the specified control style bit for the control.

(继承自 Control)
GetTopLevel()

确定控件是否是顶级控件。Determines if the control is a top-level control.

(继承自 Control)
GetType()

获取当前实例的 TypeGets the Type of the current instance.

(继承自 Object)
Hide()

对用户隐藏控件。Conceals the control from the user.

(继承自 Control)
InitializeLifetimeService()

获取生存期服务对象来控制此实例的生存期策略。Obtains a lifetime service object to control the lifetime policy for this instance.

(继承自 MarshalByRefObject)
InitLayout()

在将控件添加到另一个容器之后调用。Called after the control has been added to another container.

(继承自 Control)
Invalidate()

使控件的整个图面无效并导致重绘控件。Invalidates the entire surface of the control and causes the control to be redrawn.

(继承自 Control)
Invalidate(Boolean)

使控件的特定区域无效并向控件发送绘制消息。Invalidates a specific region of the control and causes a paint message to be sent to the control. 还可以使分配给该控件的子控件无效。Optionally, invalidates the child controls assigned to the control.

(继承自 Control)
Invalidate(Rectangle)

使控件的指定区域无效(将其添加到控件的更新区域,下次绘制操作时将重新绘制更新区域),并向控件发送绘制消息。Invalidates the specified region of the control (adds it to the control's update region, which is the area that will be repainted at the next paint operation), and causes a paint message to be sent to the control.

(继承自 Control)
Invalidate(Rectangle, Boolean)

使控件的指定区域无效(将其添加到控件的更新区域,下次绘制操作时将重新绘制更新区域),并向控件发送绘制消息。Invalidates the specified region of the control (adds it to the control's update region, which is the area that will be repainted at the next paint operation), and causes a paint message to be sent to the control. 还可以使分配给该控件的子控件无效。Optionally, invalidates the child controls assigned to the control.

(继承自 Control)
Invalidate(Region)

使控件的指定区域无效(将其添加到控件的更新区域,下次绘制操作时将重新绘制更新区域),并向控件发送绘制消息。Invalidates the specified region of the control (adds it to the control's update region, which is the area that will be repainted at the next paint operation), and causes a paint message to be sent to the control.

(继承自 Control)
Invalidate(Region, Boolean)

使控件的指定区域无效(将其添加到控件的更新区域,下次绘制操作时将重新绘制更新区域),并向控件发送绘制消息。Invalidates the specified region of the control (adds it to the control's update region, which is the area that will be repainted at the next paint operation), and causes a paint message to be sent to the control. 还可以使分配给该控件的子控件无效。Optionally, invalidates the child controls assigned to the control.

(继承自 Control)
Invoke(Delegate)

在拥有此控件的基础窗口句柄的线程上执行指定的委托。Executes the specified delegate on the thread that owns the control's underlying window handle.

(继承自 Control)
Invoke(Delegate, Object[])

在拥有控件的基础窗口句柄的线程上,用指定的参数列表执行指定委托。Executes the specified delegate, on the thread that owns the control's underlying window handle, with the specified list of arguments.

(继承自 Control)
InvokeGotFocus(Control, EventArgs)

为指定的控件引发 GotFocus 事件。Raises the GotFocus event for the specified control.

(继承自 Control)
InvokeLostFocus(Control, EventArgs)

为指定的控件引发 LostFocus 事件。Raises the LostFocus event for the specified control.

(继承自 Control)
InvokeOnClick(Control, EventArgs)

为指定的控件引发 Click 事件。Raises the Click event for the specified control.

(继承自 Control)
InvokePaint(Control, PaintEventArgs)

为指定的控件引发 Paint 事件。Raises the Paint event for the specified control.

(继承自 Control)
InvokePaintBackground(Control, PaintEventArgs)

为指定的控件引发 PaintBackground 事件。Raises the PaintBackground event for the specified control.

(继承自 Control)
IsInputChar(Char)

确定一个字符是否是控件可识别的输入字符。Determines if a character is an input character that the control recognizes.

(继承自 Control)
IsInputKey(Keys)

确定指定的键是常规输入键还是需要预处理的特殊键。Determines whether the specified key is a regular input key or a special key that requires preprocessing.

LogicalToDeviceUnits(Int32)

将逻辑 DPI 值转换为它的等效 DeviceUnit DPI 值。Converts a Logical DPI value to its equivalent DeviceUnit DPI value.

(继承自 Control)
LogicalToDeviceUnits(Size)

通过为当前 DPI 缩放小大并将其向下舍入为最接近的宽度和高度的整数值,将大小从逻辑单位转换为设备单位。Transforms a size from logical to device units by scaling it for the current DPI and rounding down to the nearest integer value for width and height.

(继承自 Control)
MemberwiseClone()

创建当前 Object 的浅表副本。Creates a shallow copy of the current Object.

(继承自 Object)
MemberwiseClone(Boolean)

创建当前 MarshalByRefObject 对象的浅表副本。Creates a shallow copy of the current MarshalByRefObject object.

(继承自 MarshalByRefObject)
NotifyInvalidate(Rectangle)

引发 Invalidated 事件,其中带有要使之无效的控件的指定区域。Raises the Invalidated event with a specified region of the control to invalidate.

(继承自 Control)
OnAutoSizeChanged(EventArgs)

引发 AutoSizeChanged 事件。Raises the AutoSizeChanged event.

(继承自 Control)
OnBackColorChanged(EventArgs)

引发 BackColorChanged 事件。Raises the BackColorChanged event.

OnBackgroundImageChanged(EventArgs)

引发 BackgroundImageChanged 事件。Raises the BackgroundImageChanged event.

(继承自 Control)
OnBackgroundImageLayoutChanged(EventArgs)

引发 BackgroundImageLayoutChanged 事件。Raises the BackgroundImageLayoutChanged event.

(继承自 Control)
OnBindingContextChanged(EventArgs)

引发 BindingContextChanged 事件。Raises the BindingContextChanged event.

(继承自 ListControl)
OnCausesValidationChanged(EventArgs)

引发 CausesValidationChanged 事件。Raises the CausesValidationChanged event.

(继承自 Control)
OnChangeUICues(UICuesEventArgs)

引发 ChangeUICues 事件。Raises the ChangeUICues event.

(继承自 Control)
OnClick(EventArgs)

引发 Click 事件。Raises the Click event.

(继承自 Control)
OnClientSizeChanged(EventArgs)

引发 ClientSizeChanged 事件。Raises the ClientSizeChanged event.

(继承自 Control)
OnContextMenuChanged(EventArgs)

引发 ContextMenuChanged 事件。Raises the ContextMenuChanged event.

(继承自 Control)
OnContextMenuStripChanged(EventArgs)

引发 ContextMenuStripChanged 事件。Raises the ContextMenuStripChanged event.

(继承自 Control)
OnControlAdded(ControlEventArgs)

引发 ControlAdded 事件。Raises the ControlAdded event.

(继承自 Control)
OnControlRemoved(ControlEventArgs)

引发 ControlRemoved 事件。Raises the ControlRemoved event.

(继承自 Control)
OnCreateControl()

引发 CreateControl() 方法。Raises the CreateControl() method.

(继承自 Control)
OnCursorChanged(EventArgs)

引发 CursorChanged 事件。Raises the CursorChanged event.

(继承自 Control)
OnDataSourceChanged(EventArgs)

引发 DataSourceChanged 事件。Raises the DataSourceChanged event.

OnDisplayMemberChanged(EventArgs)

引发 DisplayMemberChanged 事件。Raises the DisplayMemberChanged event.

OnDockChanged(EventArgs)

引发 DockChanged 事件。Raises the DockChanged event.

(继承自 Control)
OnDoubleClick(EventArgs)

引发 DoubleClick 事件。Raises the DoubleClick event.

(继承自 Control)
OnDpiChangedAfterParent(EventArgs)

引发 DpiChangedAfterParent 事件。Raises the DpiChangedAfterParent event.

(继承自 Control)
OnDpiChangedBeforeParent(EventArgs)

引发 DpiChangedBeforeParent 事件。Raises the DpiChangedBeforeParent event.

(继承自 Control)
OnDragDrop(DragEventArgs)

引发 DragDrop 事件。Raises the DragDrop event.

(继承自 Control)
OnDragEnter(DragEventArgs)

引发 DragEnter 事件。Raises the DragEnter event.

(继承自 Control)
OnDragLeave(EventArgs)

引发 DragLeave 事件。Raises the DragLeave event.

(继承自 Control)
OnDragOver(DragEventArgs)

引发 DragOver 事件。Raises the DragOver event.

(继承自 Control)
OnDrawItem(DrawItemEventArgs)

引发 DrawItem 事件。Raises the DrawItem event.

OnDropDown(EventArgs)

引发 DropDown 事件。Raises the DropDown event.

OnDropDownClosed(EventArgs)

引发 DropDownClosed 事件。Raises the DropDownClosed event.

OnDropDownStyleChanged(EventArgs)

引发 DropDownStyleChanged 事件。Raises the DropDownStyleChanged event.

OnEnabledChanged(EventArgs)

引发 EnabledChanged 事件。Raises the EnabledChanged event.

(继承自 Control)
OnEnter(EventArgs)

引发 Enter 事件。Raises the Enter event.

(继承自 Control)
OnFontChanged(EventArgs)

引发 FontChanged 事件。Raises the FontChanged event.

OnForeColorChanged(EventArgs)

引发 ForeColorChanged 事件。Raises the ForeColorChanged event.

OnFormat(ListControlConvertEventArgs)

引发 Format 事件。Raises the Format event.

(继承自 ListControl)
OnFormatInfoChanged(EventArgs)

引发 FormatInfoChanged 事件。Raises the FormatInfoChanged event.

(继承自 ListControl)
OnFormatStringChanged(EventArgs)

引发 FormatStringChanged 事件。Raises the FormatStringChanged event.

(继承自 ListControl)
OnFormattingEnabledChanged(EventArgs)

引发 FormattingEnabledChanged 事件。Raises the FormattingEnabledChanged event.

(继承自 ListControl)
OnGiveFeedback(GiveFeedbackEventArgs)

引发 GiveFeedback 事件。Raises the GiveFeedback event.

(继承自 Control)
OnGotFocus(EventArgs)

引发 GotFocus 事件。Raises the GotFocus event.

OnHandleCreated(EventArgs)

引发 HandleCreated 事件。Raises the HandleCreated event.

OnHandleDestroyed(EventArgs)

引发 HandleDestroyed 事件。Raises the HandleDestroyed event.

OnHelpRequested(HelpEventArgs)

引发 HelpRequested 事件。Raises the HelpRequested event.

(继承自 Control)
OnImeModeChanged(EventArgs)

引发 ImeModeChanged 事件。Raises the ImeModeChanged event.

(继承自 Control)
OnInvalidated(InvalidateEventArgs)

引发 Invalidated 事件。Raises the Invalidated event.

(继承自 Control)
OnKeyDown(KeyEventArgs)

引发 KeyDown 事件。Raises the KeyDown event.

OnKeyPress(KeyPressEventArgs)

引发 KeyPress 事件。Raises the KeyPress event.

OnKeyUp(KeyEventArgs)

引发 KeyUp 事件。Raises the KeyUp event.

(继承自 Control)
OnLayout(LayoutEventArgs)

引发 Layout 事件。Raises the Layout event.

(继承自 Control)
OnLeave(EventArgs)

引发 Leave 事件。Raises the Leave event.

(继承自 Control)
OnLocationChanged(EventArgs)

引发 LocationChanged 事件。Raises the LocationChanged event.

(继承自 Control)
OnLostFocus(EventArgs)

引发 LostFocus 事件。Raises the LostFocus event.

OnMarginChanged(EventArgs)

引发 MarginChanged 事件。Raises the MarginChanged event.

(继承自 Control)
OnMeasureItem(MeasureItemEventArgs)

引发 MeasureItem 事件。Raises the MeasureItem event.

OnMouseCaptureChanged(EventArgs)

引发 MouseCaptureChanged 事件。Raises the MouseCaptureChanged event.

(继承自 Control)
OnMouseClick(MouseEventArgs)

引发 MouseClick 事件。Raises the MouseClick event.

(继承自 Control)
OnMouseDoubleClick(MouseEventArgs)

引发 MouseDoubleClick 事件。Raises the MouseDoubleClick event.

(继承自 Control)
OnMouseDown(MouseEventArgs)

引发 MouseDown 事件。Raises the MouseDown event.

(继承自 Control)
OnMouseEnter(EventArgs)

引发 MouseEnter 事件。Raises the MouseEnter event.

OnMouseHover(EventArgs)

引发 MouseHover 事件。Raises the MouseHover event.

(继承自 Control)
OnMouseLeave(EventArgs)

引发 MouseLeave 事件。Raises the MouseLeave event.

OnMouseMove(MouseEventArgs)

引发 MouseMove 事件。Raises the MouseMove event.

(继承自 Control)
OnMouseUp(MouseEventArgs)

引发 MouseUp 事件。Raises the MouseUp event.

(继承自 Control)
OnMouseWheel(MouseEventArgs)

引发 MouseWheel 事件。Raises the MouseWheel event.

(继承自 Control)
OnMove(EventArgs)

引发 Move 事件。Raises the Move event.

(继承自 Control)
OnNotifyMessage(Message)

向控件通知 Windows 消息。Notifies the control of Windows messages.

(继承自 Control)
OnPaddingChanged(EventArgs)

引发 PaddingChanged 事件。Raises the PaddingChanged event.

(继承自 Control)
OnPaint(PaintEventArgs)

引发 Paint 事件。Raises the Paint event.

(继承自 Control)
OnPaintBackground(PaintEventArgs)

绘制控件的背景。Paints the background of the control.

(继承自 Control)
OnParentBackColorChanged(EventArgs)

引发 BackColorChanged 事件。Raises the BackColorChanged event.

OnParentBackgroundImageChanged(EventArgs)

当控件容器的 BackgroundImageChanged 属性值更改时,将引发 BackgroundImage 事件。Raises the BackgroundImageChanged event when the BackgroundImage property value of the control's container changes.

(继承自 Control)
OnParentBindingContextChanged(EventArgs)

当控件容器的 BindingContextChanged 属性值更改时,将引发 BindingContext 事件。Raises the BindingContextChanged event when the BindingContext property value of the control's container changes.

(继承自 Control)
OnParentChanged(EventArgs)

引发 ParentChanged 事件。Raises the ParentChanged event.

(继承自 Control)
OnParentCursorChanged(EventArgs)

引发 CursorChanged 事件。Raises the CursorChanged event.

(继承自 Control)
OnParentEnabledChanged(EventArgs)

当控件容器的 EnabledChanged 属性值更改时,将引发 Enabled 事件。Raises the EnabledChanged event when the Enabled property value of the control's container changes.

(继承自 Control)
OnParentFontChanged(EventArgs)

当控件容器的 FontChanged 属性值更改时,将引发 Font 事件。Raises the FontChanged event when the Font property value of the control's container changes.

(继承自 Control)
OnParentForeColorChanged(EventArgs)

当控件容器的 ForeColorChanged 属性值更改时,将引发 ForeColor 事件。Raises the ForeColorChanged event when the ForeColor property value of the control's container changes.

(继承自 Control)
OnParentRightToLeftChanged(EventArgs)

当控件容器的 RightToLeftChanged 属性值更改时,将引发 RightToLeft 事件。Raises the RightToLeftChanged event when the RightToLeft property value of the control's container changes.

(继承自 Control)
OnParentVisibleChanged(EventArgs)

当控件容器的 VisibleChanged 属性值更改时,将引发 Visible 事件。Raises the VisibleChanged event when the Visible property value of the control's container changes.

(继承自 Control)
OnPreviewKeyDown(PreviewKeyDownEventArgs)

引发 PreviewKeyDown 事件。Raises the PreviewKeyDown event.

(继承自 Control)
OnPrint(PaintEventArgs)

引发 Paint 事件。Raises the Paint event.

(继承自 Control)
OnQueryContinueDrag(QueryContinueDragEventArgs)

引发 QueryContinueDrag 事件。Raises the QueryContinueDrag event.

(继承自 Control)
OnRegionChanged(EventArgs)

引发 RegionChanged 事件。Raises the RegionChanged event.

(继承自 Control)
OnResize(EventArgs)

引发 Resize 事件。Raises the Resize event.

OnRightToLeftChanged(EventArgs)

引发 RightToLeftChanged 事件。Raises the RightToLeftChanged event.

(继承自 Control)
OnSelectedIndexChanged(EventArgs)

引发 SelectedIndexChanged 事件。Raises the SelectedIndexChanged event.

OnSelectedItemChanged(EventArgs)

引发 SelectedItemChanged 事件。Raises the SelectedItemChanged event.

OnSelectedValueChanged(EventArgs)

引发 SelectedValueChanged 事件。Raises the SelectedValueChanged event.

OnSelectionChangeCommitted(EventArgs)

引发 SelectionChangeCommitted 事件。Raises the SelectionChangeCommitted event.

OnSizeChanged(EventArgs)

引发 SizeChanged 事件。Raises the SizeChanged event.

(继承自 Control)
OnStyleChanged(EventArgs)

引发 StyleChanged 事件。Raises the StyleChanged event.

(继承自 Control)
OnSystemColorsChanged(EventArgs)

引发 SystemColorsChanged 事件。Raises the SystemColorsChanged event.

(继承自 Control)
OnTabIndexChanged(EventArgs)

引发 TabIndexChanged 事件。Raises the TabIndexChanged event.

(继承自 Control)
OnTabStopChanged(EventArgs)

引发 TabStopChanged 事件。Raises the TabStopChanged event.

(继承自 Control)
OnTextChanged(EventArgs)

引发 TextChanged 事件。Raises the TextChanged event.

OnTextUpdate(EventArgs)

引发 TextUpdate 事件。Raises the TextUpdate event.

OnValidated(EventArgs)

引发 Validated 事件。Raises the Validated event.

(继承自 Control)
OnValidating(CancelEventArgs)

引发 Validating 事件。Raises the Validating event.

OnValueMemberChanged(EventArgs)

引发 ValueMemberChanged 事件。Raises the ValueMemberChanged event.

(继承自 ListControl)
OnVisibleChanged(EventArgs)

引发 VisibleChanged 事件。Raises the VisibleChanged event.

(继承自 Control)
PerformLayout()

强制控件将布局逻辑应用于其所有子控件。Forces the control to apply layout logic to all its child controls.

(继承自 Control)
PerformLayout(Control, String)

强制控件将布局逻辑应用于其所有子控件。Forces the control to apply layout logic to all its child controls.

(继承自 Control)
PointToClient(Point)

将指定屏幕点的位置计算成工作区坐标。Computes the location of the specified screen point into client coordinates.

(继承自 Control)
PointToScreen(Point)

将指定工作区点的位置计算成屏幕坐标。Computes the location of the specified client point into screen coordinates.

(继承自 Control)
PreProcessControlMessage(Message)

在调度键盘或输入消息之前,在消息循环内对它们进行预处理。Preprocesses keyboard or input messages within the message loop before they are dispatched.

(继承自 Control)
PreProcessMessage(Message)

在调度键盘或输入消息之前,在消息循环内对它们进行预处理。Preprocesses keyboard or input messages within the message loop before they are dispatched.

(继承自 Control)
ProcessCmdKey(Message, Keys)
ProcessDialogChar(Char)

处理对话框字符。Processes a dialog character.

(继承自 Control)
ProcessDialogKey(Keys)

处理对话框键。Processes a dialog key.

(继承自 Control)
ProcessKeyEventArgs(Message)

处理键消息并生成适当的控件事件。Processes a key message and generates the appropriate control events.

ProcessKeyMessage(Message)

处理键盘消息。Processes a keyboard message.

(继承自 Control)
ProcessKeyPreview(Message)

预览键盘消息。Previews a keyboard message.

(继承自 Control)
ProcessMnemonic(Char)

处理助记键字符。Processes a mnemonic character.

(继承自 Control)
RaiseDragEvent(Object, DragEventArgs)

引发适当的拖动事件。Raises the appropriate drag event.

(继承自 Control)
RaiseKeyEvent(Object, KeyEventArgs)

引发适当的键事件。Raises the appropriate key event.

(继承自 Control)
RaiseMouseEvent(Object, MouseEventArgs)

引发适当的鼠标事件。Raises the appropriate mouse event.

(继承自 Control)
RaisePaintEvent(Object, PaintEventArgs)

引发适当的绘画事件。Raises the appropriate paint event.

(继承自 Control)
RecreateHandle()

强制为控件重新创建句柄。Forces the re-creation of the handle for the control.

(继承自 Control)
RectangleToClient(Rectangle)

计算指定屏幕矩形的大小和位置(以工作区坐标表示)。Computes the size and location of the specified screen rectangle in client coordinates.

(继承自 Control)
RectangleToScreen(Rectangle)

计算指定工作区矩形的大小和位置(以屏幕坐标表示)。Computes the size and location of the specified client rectangle in screen coordinates.

(继承自 Control)
Refresh()

强制控件使其工作区无效并立即重绘自己和任何子控件。Forces the control to invalidate its client area and immediately redraw itself and any child controls.

(继承自 Control)
RefreshItem(Int32)

刷新指定位置的项。Refreshes the item contained at the specified location.

RefreshItems()

刷新所有 ComboBox 项。Refreshes all ComboBox items.

RescaleConstantsForDpi(Int32, Int32)

发生 DPI 更改时,提供用于重新缩放控件的常数。Provides constants for rescaling the control when a DPI change occurs.

(继承自 Control)
ResetBackColor()

BackColor 属性重置为其默认值。Resets the BackColor property to its default value.

(继承自 Control)
ResetBindings()

使绑定到 BindingSource 的控件重新读取列表中的所有项,并刷新这些项的显示值。Causes a control bound to the BindingSource to reread all the items in the list and refresh their displayed values.

(继承自 Control)
ResetCursor()

Cursor 属性重置为其默认值。Resets the Cursor property to its default value.

(继承自 Control)
ResetFont()

Font 属性重置为其默认值。Resets the Font property to its default value.

(继承自 Control)
ResetForeColor()

ForeColor 属性重置为其默认值。Resets the ForeColor property to its default value.

(继承自 Control)
ResetImeMode()

ImeMode 属性重置为其默认值。Resets the ImeMode property to its default value.

(继承自 Control)
ResetMouseEventArgs()

重置控件以处理 MouseLeave 事件。Resets the control to handle the MouseLeave event.

(继承自 Control)
ResetRightToLeft()

RightToLeft 属性重置为其默认值。Resets the RightToLeft property to its default value.

(继承自 Control)
ResetText()

Text 属性重置为其默认值 (Empty)。Resets the Text property to its default value (Empty).

ResumeLayout()

恢复正常的布局逻辑。Resumes usual layout logic.

(继承自 Control)
ResumeLayout(Boolean)

恢复正常的布局逻辑,可以选择强制对挂起的布局请求立即进行布局。Resumes usual layout logic, optionally forcing an immediate layout of pending layout requests.

(继承自 Control)
RtlTranslateAlignment(ContentAlignment)

将指定的 ContentAlignment 转换为相应的 ContentAlignment 以支持从右向左的文本。Converts the specified ContentAlignment to the appropriate ContentAlignment to support right-to-left text.

(继承自 Control)
RtlTranslateAlignment(HorizontalAlignment)

将指定的 HorizontalAlignment 转换为相应的 HorizontalAlignment 以支持从右向左的文本。Converts the specified HorizontalAlignment to the appropriate HorizontalAlignment to support right-to-left text.

(继承自 Control)
RtlTranslateAlignment(LeftRightAlignment)

将指定的 LeftRightAlignment 转换为相应的 LeftRightAlignment 以支持从右向左的文本。Converts the specified LeftRightAlignment to the appropriate LeftRightAlignment to support right-to-left text.

(继承自 Control)
RtlTranslateContent(ContentAlignment)

将指定的 ContentAlignment 转换为相应的 ContentAlignment 以支持从右向左的文本。Converts the specified ContentAlignment to the appropriate ContentAlignment to support right-to-left text.

(继承自 Control)
RtlTranslateHorizontal(HorizontalAlignment)

将指定的 HorizontalAlignment 转换为相应的 HorizontalAlignment 以支持从右向左的文本。Converts the specified HorizontalAlignment to the appropriate HorizontalAlignment to support right-to-left text.

(继承自 Control)
RtlTranslateLeftRight(LeftRightAlignment)

将指定的 LeftRightAlignment 转换为相应的 LeftRightAlignment 以支持从右向左的文本。Converts the specified LeftRightAlignment to the appropriate LeftRightAlignment to support right-to-left text.

(继承自 Control)
Scale(Single)

缩放控件和任何子控件。Scales the control and any child controls.

(继承自 Control)
Scale(Single, Single)

缩放整个控件和任何子控件。Scales the entire control and any child controls.

(继承自 Control)
Scale(SizeF)

按指定的比例因子缩放控件和所有子控件。Scales the control and all child controls by the specified scaling factor.

(继承自 Control)
ScaleBitmapLogicalToDevice(Bitmap)

发生 DPI 更改时,可以将逻辑位图值缩放到其等效设备单元值。Scales a logical bitmap value to it's equivalent device unit value when a DPI change occurs.

(继承自 Control)
ScaleControl(SizeF, BoundsSpecified)

缩放控件的位置、大小、空白和边距。Scales a control's location, size, padding and margin.

ScaleCore(Single, Single)

此方法与此类无关。This method is not relevant for this class.

(继承自 Control)
Select()

激活控件。Activates the control.

(继承自 Control)
Select(Boolean, Boolean)

激活子控件。Activates a child control. 还可以指定从中选择控件的 Tab 键顺序的方向。Optionally specifies the direction in the tab order to select the control from.

(继承自 Control)
Select(Int32, Int32)

选择 ComboBox 可编辑部分中的文本范围。Selects a range of text in the editable portion of the ComboBox.

SelectAll()

选择 ComboBox 可编辑部分中的所有文本。Selects all the text in the editable portion of the ComboBox.

SelectNextControl(Control, Boolean, Boolean, Boolean, Boolean)

激活下一个控件。Activates the next control.

(继承自 Control)
SendToBack()

将控件发送到 Z 顺序的后面。Sends the control to the back of the z-order.

(继承自 Control)
SetAutoSizeMode(AutoSizeMode)

设置一个值,该值指示当启用控件的 AutoSize 属性时控件的行为方式。Sets a value indicating how a control will behave when its AutoSize property is enabled.

(继承自 Control)
SetBounds(Int32, Int32, Int32, Int32)

将控件的边界设置为指定位置和大小。Sets the bounds of the control to the specified location and size.

(继承自 Control)
SetBounds(Int32, Int32, Int32, Int32, BoundsSpecified)

将控件的指定边界设置为指定位置和大小。Sets the specified bounds of the control to the specified location and size.

(继承自 Control)
SetBoundsCore(Int32, Int32, Int32, Int32, BoundsSpecified)

设置 ComboBox 的大小和位置。Sets the size and location of the ComboBox.

SetClientSizeCore(Int32, Int32)

设置控件的工作区的大小。Sets the size of the client area of the control.

(继承自 Control)
SetItemCore(Int32, Object)

在派生类中重写时,在派生类中设置具有指定索引的对象。When overridden in a derived class, sets the object with the specified index in the derived class.

SetItemsCore(IList)

在派生类中重写时,在派生类的集合中设置指定对象数组。When overridden in a derived class, sets the specified array of objects in a collection in the derived class.

SetStyle(ControlStyles, Boolean)

将指定的 ControlStyles 标志设置为 truefalseSets a specified ControlStyles flag to either true or false.

(继承自 Control)
SetTopLevel(Boolean)

将控件设置为顶级控件。Sets the control as the top-level control.

(继承自 Control)
SetVisibleCore(Boolean)

将控件设置为指定的可见状态。Sets the control to the specified visible state.

(继承自 Control)
Show()

向用户显示控件。Displays the control to the user.

(继承自 Control)
SizeFromClientSize(Size)

确定整个控件(从控件工作区的高度和宽度起计算)的大小。Determines the size of the entire control from the height and width of its client area.

(继承自 Control)
SuspendLayout()

临时挂起控件的布局逻辑。Temporarily suspends the layout logic for the control.

(继承自 Control)
ToString()

返回表示 ComboBox 控件的字符串。Returns a string that represents the ComboBox control.

Update()

使控件重绘其工作区内的无效区域。Causes the control to redraw the invalidated regions within its client area.

(继承自 Control)
UpdateBounds()

用当前大小和位置更新控件的边界。Updates the bounds of the control with the current size and location.

(继承自 Control)
UpdateBounds(Int32, Int32, Int32, Int32)

用指定大小和位置更新控件的边界。Updates the bounds of the control with the specified size and location.

(继承自 Control)
UpdateBounds(Int32, Int32, Int32, Int32, Int32, Int32)

用指定大小、位置和工作区的大小更新控件的边界。Updates the bounds of the control with the specified size, location, and client size.

(继承自 Control)
UpdateStyles()

强制将分配的样式重新应用到控件。Forces the assigned styles to be reapplied to the control.

(继承自 Control)
UpdateZOrder()

按控件的父级的 Z 顺序更新控件。Updates the control in its parent's z-order.

(继承自 Control)
WndProc(Message)

处理 Windows 消息。Processes Windows messages.

事件

AutoSizeChanged

此事件与此类无关。This event is not relevant for this class.

(继承自 Control)
BackColorChanged

BackColor 属性的值更改时发生。Occurs when the value of the BackColor property changes.

(继承自 Control)
BackgroundImageChanged

BackgroundImage 属性的值更改时发生。Occurs when the value of the BackgroundImage property changes.

BackgroundImageLayoutChanged

BackgroundImageLayout 属性更改时发生。Occurs when the BackgroundImageLayout property changes.

BindingContextChanged

BindingContext 属性的值更改时发生。Occurs when the value of the BindingContext property changes.

(继承自 Control)
CausesValidationChanged

CausesValidation 属性的值更改时发生。Occurs when the value of the CausesValidation property changes.

(继承自 Control)
ChangeUICues

焦点或键盘用户界面 (UI) 提示更改时发生。Occurs when the focus or keyboard user interface (UI) cues change.

(继承自 Control)
Click

在单击控件时发生。Occurs when the control is clicked.

(继承自 Control)
ClientSizeChanged

ClientSize 属性的值更改时发生。Occurs when the value of the ClientSize property changes.

(继承自 Control)
ContextMenuChanged

ContextMenu 属性的值更改时发生。Occurs when the value of the ContextMenu property changes.

(继承自 Control)
ContextMenuStripChanged

ContextMenuStrip 属性的值更改时发生。Occurs when the value of the ContextMenuStrip property changes.

(继承自 Control)
ControlAdded

在将新控件添加到 Control.ControlCollection 时发生。Occurs when a new control is added to the Control.ControlCollection.

(继承自 Control)
ControlRemoved

在从 Control.ControlCollection 移除控件时发生。Occurs when a control is removed from the Control.ControlCollection.

(继承自 Control)
CursorChanged

Cursor 属性的值更改时发生。Occurs when the value of the Cursor property changes.

(继承自 Control)
DataSourceChanged

DataSource 更改时发生。Occurs when the DataSource changes.

(继承自 ListControl)
DisplayMemberChanged

DisplayMember 属性更改时发生。Occurs when the DisplayMember property changes.

(继承自 ListControl)
Disposed

当通过调用 Dispose() 方法释放组件时发生。Occurs when the component is disposed by a call to the Dispose() method.

(继承自 Component)
DockChanged

Dock 属性的值更改时发生。Occurs when the value of the Dock property changes.

(继承自 Control)
DoubleClick

此事件与此类无关。This event is not relevant for this class.

DpiChangedAfterParent

当父控件或窗体的 DPI 更改后,以编程方式更改控件的 DPI 设置时发生。Occurs when the DPI setting for a control is changed programmatically after the DPI of its parent control or form has changed.

(继承自 Control)
DpiChangedBeforeParent

父控件或窗体的 DPI 更改事件发生前,以编程方式更改控件的 DPI 设置时发生。Occurs when the DPI setting for a control is changed programmatically before a DPI change event for its parent control or form has occurred.

(继承自 Control)
DragDrop

拖放操作完成时发生。Occurs when a drag-and-drop operation is completed.

(继承自 Control)
DragEnter

在将对象拖入控件的边界时发生。Occurs when an object is dragged into the control's bounds.

(继承自 Control)
DragLeave

将对象拖出控件的边界时发生。Occurs when an object is dragged out of the control's bounds.

(继承自 Control)
DragOver

在将对象拖到控件的边界上发生。Occurs when an object is dragged over the control's bounds.

(继承自 Control)
DrawItem

在所有者绘制的 ComboBox 的可视方位更改时发生。Occurs when a visual aspect of an owner-drawn ComboBox changes.

DropDown

显示 ComboBox 的下拉部分时发生。Occurs when the drop-down portion of a ComboBox is shown.

DropDownClosed

ComboBox 的下拉部分不再可见时发生。Occurs when the drop-down portion of the ComboBox is no longer visible.

DropDownStyleChanged

DropDownStyle 属性更改后发生。Occurs when the DropDownStyle property has changed.

EnabledChanged

Enabled 属性值更改后发生。Occurs when the Enabled property value has changed.

(继承自 Control)
Enter

进入控件时发生。Occurs when the control is entered.

(继承自 Control)
FontChanged

Font 属性值更改时发生。Occurs when the Font property value changes.

(继承自 Control)
ForeColorChanged

ForeColor 属性值更改时发生。Occurs when the ForeColor property value changes.

(继承自 Control)
Format

在该控件绑定到数据值时发生。Occurs when the control is bound to a data value.

(继承自 ListControl)
FormatInfoChanged

FormatInfo 属性的值更改时发生。Occurs when the value of the FormatInfo property changes.

(继承自 ListControl)
FormatStringChanged

FormatString 属性的值更改时发生。Occurs when value of the FormatString property changes.

(继承自 ListControl)
FormattingEnabledChanged

FormattingEnabled 属性的值更改时发生。Occurs when the value of the FormattingEnabled property changes.

(继承自 ListControl)
GiveFeedback

在执行拖动操作期间发生。Occurs during a drag operation.

(继承自 Control)
GotFocus

在控件接收焦点时发生。Occurs when the control receives focus.

(继承自 Control)
HandleCreated

在为控件创建句柄时发生。Occurs when a handle is created for the control.

(继承自 Control)
HandleDestroyed

在控件的句柄处于销毁过程中时发生。Occurs when the control's handle is in the process of being destroyed.

(继承自 Control)
HelpRequested

用户请求控件帮助时发生。Occurs when the user requests help for a control.

(继承自 Control)
ImeModeChanged

ImeMode 属性更改后发生。Occurs when the ImeMode property has changed.

(继承自 Control)
Invalidated

控件的显示要求重新绘制时发生。Occurs when a control's display requires redrawing.

(继承自 Control)
KeyDown

在控件有焦点的情况下按下键时发生。Occurs when a key is pressed while the control has focus.

(继承自 Control)
KeyPress

在控件有焦点的情况下Occurs when a character. 字符、空格或退格键时发生。space or backspace key is pressed while the control has focus.

(继承自 Control)
KeyUp

在控件有焦点的情况下释放键时发生。Occurs when a key is released while the control has focus.

(继承自 Control)
Layout

在控件应重新定位其子控件时发生。Occurs when a control should reposition its child controls.

(继承自 Control)
Leave

在输入焦点离开控件时发生。Occurs when the input focus leaves the control.

(继承自 Control)
LocationChanged

Location 属性值更改后发生。Occurs when the Location property value has changed.

(继承自 Control)
LostFocus

在控件失去焦点时发生。Occurs when the control loses focus.

(继承自 Control)
MarginChanged

在控件边距更改时发生。Occurs when the control's margin changes.

(继承自 Control)
MeasureItem

每次需要绘制一个所有者绘制的 ComboBox 项,并且列表项的大小已确定时就会发生。Occurs each time an owner-drawn ComboBox item needs to be drawn and when the sizes of the list items are determined.

MouseCaptureChanged

当控件失去鼠标捕获时发生。Occurs when the control loses mouse capture.

(继承自 Control)
MouseClick

用鼠标单击控件时发生。Occurs when the control is clicked by the mouse.

(继承自 Control)
MouseDoubleClick

用鼠标双击控件时发生。Occurs when the control is double clicked by the mouse.

(继承自 Control)
MouseDown

当鼠标指针位于控件上并按下鼠标键时发生。Occurs when the mouse pointer is over the control and a mouse button is pressed.

(继承自 Control)
MouseEnter

在鼠标指针进入控件时发生。Occurs when the mouse pointer enters the control.

(继承自 Control)
MouseHover

在鼠标指针停放在控件上时发生。Occurs when the mouse pointer rests on the control.

(继承自 Control)
MouseLeave

在鼠标指针离开控件时发生。Occurs when the mouse pointer leaves the control.

(继承自 Control)
MouseMove

在鼠标指针移到控件上时发生。Occurs when the mouse pointer is moved over the control.

(继承自 Control)
MouseUp

在鼠标指针在控件上并释放鼠标键时发生。Occurs when the mouse pointer is over the control and a mouse button is released.

(继承自 Control)
MouseWheel

在控件有焦点且鼠标轮移动时发生。Occurs when the mouse wheel moves while the control has focus.

(继承自 Control)
Move

在移动控件时发生。Occurs when the control is moved.

(继承自 Control)
PaddingChanged

此事件与此类无关。This event is not relevant to this class.

Paint

在重绘 ComboBox 控件时发生。Occurs when the ComboBox control is redrawn.

ParentChanged

Parent 属性值更改时发生。Occurs when the Parent property value changes.

(继承自 Control)
PreviewKeyDown

在焦点位于此控件上的情况下,当有按键动作时发生(在 KeyDown 事件之前发生)。Occurs before the KeyDown event when a key is pressed while focus is on this control.

(继承自 Control)
QueryAccessibilityHelp

AccessibleObject 为辅助功能应用程序提供帮助时发生。Occurs when AccessibleObject is providing help to accessibility applications.

(继承自 Control)
QueryContinueDrag

在拖放操作期间发生,并且允许拖动源确定是否应取消拖放操作。Occurs during a drag-and-drop operation and enables the drag source to determine whether the drag-and-drop operation should be canceled.

(继承自 Control)
RegionChanged

Region 属性的值更改时发生。Occurs when the value of the Region property changes.

(继承自 Control)
Resize

在调整控件大小时发生。Occurs when the control is resized.

(继承自 Control)
RightToLeftChanged

RightToLeft 属性值更改时发生。Occurs when the RightToLeft property value changes.

(继承自 Control)
SelectedIndexChanged

SelectedIndex 属性更改后发生。Occurs when the SelectedIndex property has changed.

SelectedValueChanged

SelectedValue 属性更改时发生。Occurs when the SelectedValue property changes.

(继承自 ListControl)
SelectionChangeCommitted

当用户更改所选的项并在 ComboBox 中显示此更改时发生。Occurs when the user changes the selected item and that change is displayed in the ComboBox.

SizeChanged

Size 属性值更改时发生。Occurs when the Size property value changes.

(继承自 Control)
StyleChanged

在控件样式更改时发生。Occurs when the control style changes.

(继承自 Control)
SystemColorsChanged

系统颜色更改时发生。Occurs when the system colors change.

(继承自 Control)
TabIndexChanged

TabIndex 属性值更改时发生。Occurs when the TabIndex property value changes.

(继承自 Control)
TabStopChanged

TabStop 属性值更改时发生。Occurs when the TabStop property value changes.

(继承自 Control)
TextChanged

Text 属性值更改时发生。Occurs when the Text property value changes.

(继承自 Control)
TextUpdate

在控件设置文本格式后、文本显示之前发生。Occurs when the control has formatted the text, but before the text is displayed.

Validated

在控件完成验证时发生。Occurs when the control is finished validating.

(继承自 Control)
Validating

在控件验证时发生。Occurs when the control is validating.

(继承自 Control)
ValueMemberChanged

ValueMember 属性更改时发生。Occurs when the ValueMember property changes.

(继承自 ListControl)
VisibleChanged

Visible 属性值更改时发生。Occurs when the Visible property value changes.

(继承自 Control)

显式界面实现

IDropTarget.OnDragDrop(DragEventArgs)

引发 DragDrop 事件。Raises the DragDrop event.

(继承自 Control)
IDropTarget.OnDragEnter(DragEventArgs)

引发 DragEnter 事件。Raises the DragEnter event.

(继承自 Control)
IDropTarget.OnDragLeave(EventArgs)

引发 DragLeave 事件。Raises the DragLeave event.

(继承自 Control)
IDropTarget.OnDragOver(DragEventArgs)

引发 DragOver 事件。Raises the DragOver event.

(继承自 Control)

适用于