LinkLabel.Link LinkLabel.Link LinkLabel.Link LinkLabel.Link Class

定义

表示 LinkLabel 控件内的链接。Represents a link within a LinkLabel control.

public: ref class LinkLabel::Link
[System.ComponentModel.TypeConverter(typeof(System.Windows.Forms.LinkConverter))]
public class LinkLabel.Link
type LinkLabel.Link = class
Public Class LinkLabel.Link
继承
LinkLabel.LinkLinkLabel.LinkLinkLabel.LinkLinkLabel.Link
属性

示例

下面的示例演示如何使用LinkLabel具有多个LinkArea节定义的类在窗体上显示标签。The following example demonstrates using the LinkLabel class, with multiple LinkArea sections defined, to display a label on a form. 该示例演示如何设置AutoSize DisabledLinkColorLinkBehavior、、 LinkColorVisitedLinkColor属性,以自定义的外观LinkLabelThe example demonstrates setting the AutoSize, LinkBehavior, DisabledLinkColor, LinkColor, and VisitedLinkColor properties to customize the look of the LinkLabel. 第一个LinkAreaLinkLabel.LinkArea使用属性指定的。The first LinkArea is specified using the LinkLabel.LinkArea property. LinkLabel使用方法将其他链接添加到。LinkLabel.LinkCollection.AddAdditional links are added to the LinkLabel using the LinkLabel.LinkCollection.Add method. 该示例通过启动LinkClicked用于超链接的 Web 浏览器,并MessageBox为其他链接显示来处理事件。The example handles the LinkClicked event by starting the Web browser for hyperlinks, and displaying a MessageBox for other links.

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

using namespace System;
using namespace System::Drawing;
using namespace System::Windows::Forms;
public ref class Form1: public System::Windows::Forms::Form
{
private:
   System::Windows::Forms::LinkLabel^ linkLabel1;

public:
   Form1()
   {
      
      // Create the LinkLabel.
      this->linkLabel1 = gcnew System::Windows::Forms::LinkLabel;
      
      // Configure the LinkLabel's size and location. Specify that the
      // size should be automatically determined by the content.
      this->linkLabel1->Location = System::Drawing::Point( 34, 56 );
      this->linkLabel1->Size = System::Drawing::Size( 224, 16 );
      this->linkLabel1->AutoSize = true;
      
      // Configure the appearance.
      this->linkLabel1->DisabledLinkColor = System::Drawing::Color::Red;
      this->linkLabel1->VisitedLinkColor = System::Drawing::Color::Blue;
      this->linkLabel1->LinkBehavior = System::Windows::Forms::LinkBehavior::HoverUnderline;
      this->linkLabel1->LinkColor = System::Drawing::Color::Navy;
      this->linkLabel1->TabIndex = 0;
      this->linkLabel1->TabStop = true;
      
      // Add an event handler to do something when the links are clicked.
      this->linkLabel1->LinkClicked += gcnew System::Windows::Forms::LinkLabelLinkClickedEventHandler( this, &Form1::linkLabel1_LinkClicked );
      
      // Identify what the first Link is.
      this->linkLabel1->LinkArea = System::Windows::Forms::LinkArea( 0, 8 );
      
      // Identify that the first link is visited already.
      this->linkLabel1->Links[ 0 ]->Visited = true;
      
      // Set the Text property to a String*.
      this->linkLabel1->Text = "Register Online.  Visit Microsoft.  Visit MSN.";
      
      // Create new links using the Add method of the LinkCollection class.
      // Underline the appropriate words in the LinkLabel's Text property.
      // The words 'Register', 'Microsoft', and 'MSN' will
      // all be underlined and behave as hyperlinks.
      // First check that the Text property is long enough to accommodate
      // the desired hyperlinked areas.  If it's not, don't add hyperlinks.
      if ( this->linkLabel1->Text->Length >= 45 )
      {
         this->linkLabel1->Links[ 0 ]->LinkData = "Register";
         this->linkLabel1->Links->Add( 24, 9, "www.microsoft.com" );
         this->linkLabel1->Links->Add( 42, 3, "www.msn.com" );
         this->linkLabel1->Links[ 1 ]->Enabled = false;
      }

      
      // Set up how the form should be displayed and add the controls to the form.
      this->ClientSize = System::Drawing::Size( 292, 266 );
      array<System::Windows::Forms::Control^>^temp0 = {this->linkLabel1};
      this->Controls->AddRange( temp0 );
      this->Text = "Link Label Example";
   }


private:
   void linkLabel1_LinkClicked( Object^ /*sender*/, System::Windows::Forms::LinkLabelLinkClickedEventArgs^ e )
   {
      // Determine which link was clicked within the LinkLabel.
      this->linkLabel1->Links[ linkLabel1->Links->IndexOf( e->Link ) ]->Visited = true;
      
      // Display the appropriate link based on the value of the
      // LinkData property of the Link Object*.
      String^ target = dynamic_cast<String^>(e->Link->LinkData);
      
      // If the value looks like a URL, navigate to it.
      // Otherwise, display it in a message box.
      if ( nullptr != target && target->StartsWith( "www" ) )
      {
         System::Diagnostics::Process::Start( target );
      }
      else
      {
         MessageBox::Show( "Item clicked: {0}", target );
      }
   }
};

[STAThread]
int main()
{
   Application::Run( gcnew Form1 );
}
using System;
using System.Drawing;
using System.Windows.Forms;

public class Form1 : System.Windows.Forms.Form
{
    private System.Windows.Forms.LinkLabel linkLabel1;
    
    [STAThread]
    static void Main() 
    {
        Application.Run(new Form1());
    }

    public Form1()
    {
        // Create the LinkLabel.
        this.linkLabel1 = new System.Windows.Forms.LinkLabel();

        // Configure the LinkLabel's size and location. Specify that the
        // size should be automatically determined by the content.
        this.linkLabel1.Location = new System.Drawing.Point(34, 56);
        this.linkLabel1.Size = new System.Drawing.Size(224, 16);
        this.linkLabel1.AutoSize = true;

        // Configure the appearance. 
        // Set the DisabledLinkColor so that a disabled link will show up against the form's background.
        this.linkLabel1.DisabledLinkColor = System.Drawing.Color.Red;
        this.linkLabel1.VisitedLinkColor = System.Drawing.Color.Blue;
        this.linkLabel1.LinkBehavior = System.Windows.Forms.LinkBehavior.HoverUnderline;
        this.linkLabel1.LinkColor = System.Drawing.Color.Navy;
        
        this.linkLabel1.TabIndex = 0;
        this.linkLabel1.TabStop = true;
        

        // Add an event handler to do something when the links are clicked.
        this.linkLabel1.LinkClicked += new System.Windows.Forms.LinkLabelLinkClickedEventHandler(this.linkLabel1_LinkClicked);

        // Identify what the first Link is.
        this.linkLabel1.LinkArea = new System.Windows.Forms.LinkArea(0, 8);

        // Identify that the first link is visited already.
        this.linkLabel1.Links[0].Visited = true;
        
        // Set the Text property to a string.
        this.linkLabel1.Text = "Register Online.  Visit Microsoft.  Visit MSN.";

        // Create new links using the Add method of the LinkCollection class.
        // Underline the appropriate words in the LinkLabel's Text property.
        // The words 'Register', 'Microsoft', and 'MSN' will 
        // all be underlined and behave as hyperlinks.

        // First check that the Text property is long enough to accommodate
        // the desired hyperlinked areas.  If it's not, don't add hyperlinks.
        if(this.linkLabel1.Text.Length >= 45)
        {
            this.linkLabel1.Links[0].LinkData = "Register";
            this.linkLabel1.Links.Add(24, 9, "www.microsoft.com");
            this.linkLabel1.Links.Add(42, 3, "www.msn.com");
        //  The second link is disabled and will appear as red.
            this.linkLabel1.Links[1].Enabled = false;
        }
        
        // Set up how the form should be displayed and add the controls to the form.
        this.ClientSize = new System.Drawing.Size(292, 266);
        this.Controls.AddRange(new System.Windows.Forms.Control[] {this.linkLabel1});
        this.Text = "Link Label Example";
    }

    private void linkLabel1_LinkClicked(object sender, System.Windows.Forms.LinkLabelLinkClickedEventArgs e)
    {
        // Determine which link was clicked within the LinkLabel.
        this.linkLabel1.Links[linkLabel1.Links.IndexOf(e.Link)].Visited = true;

        // Display the appropriate link based on the value of the 
        // LinkData property of the Link object.
        string target = e.Link.LinkData as string;

        // If the value looks like a URL, navigate to it.
        // Otherwise, display it in a message box.
        if(null != target && target.StartsWith("www"))
        {
            System.Diagnostics.Process.Start(target);
        }
        else
        {    
            MessageBox.Show("Item clicked: " + target);
        }
    }
}
Imports System.Drawing
Imports System.Windows.Forms

Public NotInheritable Class Form1
    Inherits System.Windows.Forms.Form

    Friend WithEvents LinkLabel1 As System.Windows.Forms.LinkLabel

    <System.STAThread()> _
    Public Shared Sub Main()
        System.Windows.Forms.Application.Run(New Form1)
    End Sub

    Public Sub New()
        MyBase.New()


        Me.LinkLabel1 = New System.Windows.Forms.LinkLabel

        ' Configure the LinkLabel's size and location. Specify that the
        ' size should be automatically determined by the content.
        Me.linkLabel1.Location = New System.Drawing.Point(34, 56) 
        Me.linkLabel1.Size = New System.Drawing.Size(224, 16) 
        Me.linkLabel1.AutoSize = True 

        ' Configure the appearance.
        ' Set the DisabledLinkColor so that a disabled link will show up against the form's background.
        Me.linkLabel1.DisabledLinkColor = System.Drawing.Color.Red 
        Me.linkLabel1.VisitedLinkColor = System.Drawing.Color.Blue 
        Me.linkLabel1.LinkBehavior = System.Windows.Forms.LinkBehavior.HoverUnderline 
        Me.linkLabel1.LinkColor = System.Drawing.Color.Navy 
        
        Me.linkLabel1.TabIndex = 0 
        Me.linkLabel1.TabStop = True 
        
        ' Identify what the first Link is.
        Me.linkLabel1.LinkArea = New System.Windows.Forms.LinkArea(0, 8)

        ' Identify that the first link is visited already.
        Me.linkLabel1.Links(0).Visited = true
        
        ' Set the Text property to a string.
        Me.linkLabel1.Text = "Register Online.  Visit Microsoft.  Visit MSN."

        ' Create new links using the Add method of the LinkCollection class.
        ' Underline the appropriate words in the LinkLabel's Text property.
        ' The words 'Register', 'Microsoft', and 'MSN' will 
        ' all be underlined and behave as hyperlinks.

        ' First check that the Text property is long enough to accommodate
        ' the desired hyperlinked areas.  If it's not, don't add hyperlinks.
        If Me.LinkLabel1.Text.Length >= 45 Then
            Me.LinkLabel1.Links(0).LinkData = "Register"
            Me.LinkLabel1.Links.Add(24, 9, "www.microsoft.com")
            Me.LinkLabel1.Links.Add(42, 3, "www.msn.com")
            ' The second link is disabled and will appear as red.
            Me.linkLabel1.Links(1).Enabled = False
        End If

        ' Set up how the form should be displayed and adds the controls to the form.
        Me.ClientSize = New System.Drawing.Size(292, 266)
        Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.LinkLabel1})
        Me.Text = "Link Label Example"
    End Sub

    Private Sub linkLabel1_LinkClicked(ByVal sender As Object, _
                ByVal e As System.Windows.Forms.LinkLabelLinkClickedEventArgs) Handles LinkLabel1.LinkClicked

        ' Determine which link was clicked within the LinkLabel.
        Me.LinkLabel1.Links(LinkLabel1.Links.IndexOf(e.Link)).Visited = True

        ' Displays the appropriate link based on the value of the LinkData property of the Link object.
        Dim target As String = CType(e.Link.LinkData, String)

        ' If the value looks like a URL, navigate to it.
        ' Otherwise, display it in a message box.
        If (target IsNot Nothing) AndAlso (target.StartsWith("www")) Then
            System.Diagnostics.Process.Start(target)
        Else
            MessageBox.Show(("Item clicked: " + target))
        End If

    End Sub

End Class

注解

类定义LinkLabel控件内的链接的属性。 LinkLabel.LinkThe LinkLabel.Link class defines the properties of a link within a LinkLabel control. 您可以使用这些属性为LinkClicked LinkLabel控件的事件提供数据,以便在控件中单击该链接时执行任务。You can use these properties to provide data to the LinkClicked event of the LinkLabel control to perform tasks when the link is clicked in the control. 属性允许您定义LinkClicked事件可用于在 Microsoft Internet Explorer 中显示 URL 或打开文件的信息。 LinkDataThe LinkData property enables you to define information that the LinkClicked event can use to display a URL within Microsoft Internet Explorer or to open a file.

除了与链接相关的信息外, LinkLabel.Link类的属性还有助于定义的LinkLabel.Link文本及其显示状态。In addition to information related to the link, the properties of the LinkLabel.Link class also help define the text of the LinkLabel.Link and its display state. 和属性定义要显示为链接的LinkLabel控件文本中文本的位置和长度。 Length StartThe Start and Length properties define the location and length of text from the text of the LinkLabel control to display as a link. 属性允许您将链接显示为已禁用的链接, Visited并且属性可以提醒用户他们已访问的当前实例LinkLabel中的指定链接。 EnabledThe Enabled property allows you to display the link as a disabled link, and the Visited property can alert the user that they already visited the specified link in the current instance of the LinkLabel.

可以在单个LinkLabel控件中显示多个链接。You can display multiple links in a single LinkLabel control. LinkLabel.Link个都添加到LinkLabel.LinkCollectionLinkLabel控件关联的中。Each LinkLabel.Link is added into the LinkLabel.LinkCollection associated with the LinkLabel control. 若要获取LinkLabel控件中定义的链接集合,请LinkLabel.Links使用属性。To obtain the collection of links defined in a LinkLabel control, use the LinkLabel.Links property.

构造函数

LinkLabel.Link() LinkLabel.Link() LinkLabel.Link() LinkLabel.Link()

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

LinkLabel.Link(Int32, Int32) LinkLabel.Link(Int32, Int32) LinkLabel.Link(Int32, Int32) LinkLabel.Link(Int32, Int32)

使用 LinkLabel.Link 内指定的起始位置和起始位置之后的字符数初始化 LinkLabel 类的新实例。Initializes a new instance of the LinkLabel.Link class with the specified starting location and number of characters after the starting location within the LinkLabel.

LinkLabel.Link(Int32, Int32, Object) LinkLabel.Link(Int32, Int32, Object) LinkLabel.Link(Int32, Int32, Object) LinkLabel.Link(Int32, Int32, Object)

使用 LinkLabel.Link 内指定的起始位置、起始位置之后的字符数以及与链接关联的数据初始化 LinkLabel 类的新实例。Initializes a new instance of the LinkLabel.Link class with the specified starting location, number of characters after the starting location within the LinkLabel, and the data associated with the link.

属性

Description Description Description Description

获取或设置链接的文本说明。Gets or sets a text description of the link.

Enabled Enabled Enabled Enabled

获取或设置一个值,该值指示是否启用链接。Gets or sets a value indicating whether the link is enabled.

Length Length Length Length

获取或设置链接文本中的字符数。Gets or sets the number of characters in the link text.

LinkData LinkData LinkData LinkData

获取或设置与链接关联的数据。Gets or sets the data associated with the link.

Name Name Name Name

获取或设置 LinkLabel.Link 的名称。Gets or sets the name of the LinkLabel.Link.

Start Start Start Start

获取或设置 LinkLabel 的文本内链接的起始位置。Gets or sets the starting location of the link within the text of the LinkLabel.

Tag Tag Tag Tag

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

Visited Visited Visited Visited

获取或设置一个值,该值指示用户是否已访问过该链接。Gets or sets a value indicating whether the user has visited the link.

方法

Equals(Object) Equals(Object) Equals(Object) 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.

(Inherited from Object)
GetHashCode() GetHashCode() GetHashCode() GetHashCode()

作为默认哈希函数。Serves as the default hash function.

(Inherited from Object)
GetType() GetType() GetType() GetType()

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

(Inherited from Object)
MemberwiseClone() MemberwiseClone() MemberwiseClone() MemberwiseClone()

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

(Inherited from Object)
ToString() ToString() ToString() ToString()

返回表示当前对象的字符串。Returns a string that represents the current object.

(Inherited from Object)

适用于

另请参阅