ComboBoxStyle 列舉

定義

指定 ComboBox 樣式。Specifies the ComboBox style.

public enum class ComboBoxStyle
public enum ComboBoxStyle
type ComboBoxStyle = 
Public Enum ComboBoxStyle
繼承
ComboBoxStyle

欄位

DropDown 1

指定清單是以按一下向下鍵的方式顯示,以及指定文字部分為可編輯。Specifies that the list is displayed by clicking the down arrow and that the text portion is editable. 這表示使用者可以在清單中輸入新的值,並且不限於選取現有的值。This means that the user can enter a new value and is not limited to selecting an existing value in the list. 使用這個設定時,AppendAutoCompleteMode 值的運作方式與 SuggestAppend 值相同。When using this setting, the Append value of AutoCompleteMode works the same as the SuggestAppend value. 這是預設樣式。This is the default style.

DropDownList 2

指定清單是以按一下向下鍵的方式顯示,以及指定文字部分為不可編輯。Specifies that the list is displayed by clicking the down arrow and that the text portion is not editable. 這表示使用者無法輸入新的值,This means that the user cannot enter a new value. 只能選取清單中現有的值。Only values already in the list can be selected. 只有 AutoCompleteModeSuggestSuggestAppend 時,才顯示這個清單。The list displays only if AutoCompleteMode is Suggest or SuggestAppend.

Simple 0

指定一律顯示清單,以及指定文字部分為可編輯。Specifies that the list is always visible and that the text portion is editable. 這表示使用者可以在清單中輸入新的值,並且不限於選取現有的值。This means that the user can enter a new value and is not limited to selecting an existing value in the list.

範例

下列程式碼範例示範如何藉由ComboBox ComboBox.DropDownStyle將屬性設定為ComboBoxStyle值來初始化控制項。The following code example demonstrates how to initialize a ComboBox control by setting the ComboBox.DropDownStyle property to a ComboBoxStyle value.

   // Declare comboBox1 as a ComboBox.
internal:
   System::Windows::Forms::ComboBox^ ComboBox1;

private:
   // This method initializes the combo box, adding a large string array
   // but limiting the drop-down size to six rows so the combo box doesn't 
   // cover other controls when it expands.
   void InitializeComboBox()
   {
      this->ComboBox1 = gcnew System::Windows::Forms::ComboBox;
      array<String^>^ employees = {"Hamilton, David","Hensien, Kari",
         "Hammond, Maria","Harris, Keith","Henshaw, Jeff D.",
         "Hanson, Mark","Harnpadoungsataya, Sariya",
         "Harrington, Mark","Harris, Keith","Hartwig, Doris",
         "Harui, Roger","Hassall, Mark","Hasselberg, Jonas",
         "Harnpadoungsataya, Sariya","Henshaw, Jeff D.",
         "Henshaw, Jeff D.","Hensien, Kari","Harris, Keith",
         "Henshaw, Jeff D.","Hensien, Kari","Hasselberg, Jonas",
         "Harrington, Mark","Hedlund, Magnus","Hay, Jeff",
         "Heidepriem, Brandon D."};
      ComboBox1->Items->AddRange( employees );
      this->ComboBox1->Location = System::Drawing::Point( 136, 32 );
      this->ComboBox1->IntegralHeight = false;
      this->ComboBox1->MaxDropDownItems = 5;
      this->ComboBox1->DropDownStyle = ComboBoxStyle::DropDownList;
      this->ComboBox1->Name = "ComboBox1";
      this->ComboBox1->Size = System::Drawing::Size( 136, 81 );
      this->ComboBox1->TabIndex = 0;
      this->Controls->Add( this->ComboBox1 );
      
      // Associate the event-handling method with the 
      // SelectedIndexChanged event.
      this->ComboBox1->SelectedIndexChanged +=
         gcnew System::EventHandler( this, &Form1::ComboBox1_SelectedIndexChanged );
   }
// Declare comboBox1 as a ComboBox.
internal System.Windows.Forms.ComboBox ComboBox1;

// This method initializes the combo box, adding a large string array
// but limiting the drop-down size to six rows so the combo box doesn't 
// cover other controls when it expands.
private void InitializeComboBox()
{
    this.ComboBox1 = new System.Windows.Forms.ComboBox();
    string[] employees = new string[]{"Hamilton, David", "Hensien, Kari",
            "Hammond, Maria", "Harris, Keith", "Henshaw, Jeff D.", 
            "Hanson, Mark", "Harnpadoungsataya, Sariya", 
            "Harrington, Mark", "Harris, Keith", "Hartwig, Doris", 
            "Harui, Roger", "Hassall, Mark", "Hasselberg, Jonas", 
            "Harnpadoungsataya, Sariya", "Henshaw, Jeff D.", 
            "Henshaw, Jeff D.", "Hensien, Kari", "Harris, Keith", 
            "Henshaw, Jeff D.", "Hensien, Kari", "Hasselberg, Jonas",
            "Harrington, Mark", "Hedlund, Magnus", "Hay, Jeff", 
            "Heidepriem, Brandon D."};

    ComboBox1.Items.AddRange(employees);
    this.ComboBox1.Location = new System.Drawing.Point(136, 32);
    this.ComboBox1.IntegralHeight = false;
    this.ComboBox1.MaxDropDownItems = 5;
    this.ComboBox1.DropDownStyle = ComboBoxStyle.DropDownList;
    this.ComboBox1.Name = "ComboBox1";
    this.ComboBox1.Size = new System.Drawing.Size(136, 81);
    this.ComboBox1.TabIndex = 0;
    this.Controls.Add(this.ComboBox1);
    
    // Associate the event-handling method with the 
    // SelectedIndexChanged event.
    this.ComboBox1.SelectedIndexChanged += 
        new System.EventHandler(ComboBox1_SelectedIndexChanged);
}

' Declare comboBox1 as a ComboBox.
Friend WithEvents ComboBox1 As System.Windows.Forms.ComboBox

' This method initializes the combo box, adding a large string 
' array but limiting the drop-down size to six rows so the combo box
' doesn't cover other controls when it expands.
Private Sub InitializeComboBox()
    Me.ComboBox1 = New System.Windows.Forms.ComboBox
    Dim employees() As String = New String() {"Hamilton, David", _
        "Hensien, Kari", "Hammond, Maria", "Harris, Keith", _
        "Henshaw, Jeff D.", "Hanson, Mark", "Harnpadoungsataya, Sariya", _
        "Harrington, Mark", "Harris, Keith", "Hartwig, Doris", _
        "Harui, Roger", "Hassall, Mark", "Hasselberg, Jonas", _
        "Harnpadoungsataya, Sariya", "Henshaw, Jeff D.", "Henshaw, Jeff D.", _
        "Hensien, Kari", "Harris, Keith", "Henshaw, Jeff D.", _
        "Hensien, Kari", "Hasselberg, Jonas", "Harrington, Mark", _
        "Hedlund, Magnus", "Hay, Jeff", "Heidepriem, Brandon D."}

    ComboBox1.Items.AddRange(employees)
    Me.ComboBox1.Location = New System.Drawing.Point(136, 32)
    Me.ComboBox1.IntegralHeight = False
    Me.ComboBox1.MaxDropDownItems = 5
    Me.ComboBox1.DropDownStyle = ComboBoxStyle.DropDown
    Me.ComboBox1.Name = "ComboBox1"
    Me.ComboBox1.Size = New System.Drawing.Size(136, 81)
    Me.ComboBox1.TabIndex = 0
    Me.Controls.Add(Me.ComboBox1)
End Sub


備註

DropDownStyle屬性會指定清單是否一律顯示, 或清單是否顯示在下拉式清單中。The DropDownStyle property specifies whether the list is always displayed or whether the list is displayed in a drop-down. DropDownStyle屬性也會指定是否可以編輯文字部分。The DropDownStyle property also specifies whether the text portion can be edited.

適用於