LinkBehavior 枚举

指定 LinkLabel 中的链接的行为。

**命名空间:**System.Windows.Forms
**程序集:**System.Windows.Forms（在 system.windows.forms.dll 中）

语法

声明
Public Enumeration LinkBehavior
用法
Dim instance As LinkBehavior

public enum LinkBehavior

public enum class LinkBehavior

public enum LinkBehavior

public enum LinkBehavior

成员

	成员名称	说明
	AlwaysUnderline	该链接始终显示为带下划线的文本。
	HoverUnderline	仅当鼠标悬停在链接文本上时，该链接才显示带下划线的文本。
	NeverUnderline	链接文本从不带下划线。仍可使用 LinkLabel 控件的 LinkColor 属性将该链接与其他文本区分开。
	SystemDefault	此设置的行为取决于使用“控制面板”或 Internet Explorer 中的“Internet 选项”对话框设置的选项。

备注

使用此枚举的成员设置 LinkLabel 的 LinkBehavior 属性的值。

示例

下面的示例阐释了如何使用 LinkBehavior 枚举设置 LinkLabel.LinkBehavior 属性。示例还演示如何设置 LinkLabel.LinkColor、Text 和 LinkVisited 属性。要运行示例代码，可将它放置到一个空白窗体中，并从该窗体的构造函数或 Load 方法中调用 InitializeLinkLabel 方法。

' Declare the LinkLabel object.
Friend WithEvents LinkLabel1 As System.Windows.Forms.LinkLabel

' Declare keywords array to identify links
Dim keywords() As String

Private Sub InitializeLinkLabel()
    Me.LinkLabel1 = New System.Windows.Forms.LinkLabel
    Me.LinkLabel1.Links.Clear()
    ' Set the location, name and size.
    Me.LinkLabel1.Location = New System.Drawing.Point(10, 20)
    Me.LinkLabel1.Name = "CompanyLinks"
    Me.LinkLabel1.Size = New System.Drawing.Size(104, 150)

    ' Set the LinkBehavior property to show underline when mouse
    ' hovers over the links.
    Me.LinkLabel1.LinkBehavior = _
        System.Windows.Forms.LinkBehavior.HoverUnderline
    Dim textString As String = "For more information see our" & _
       " company website or the research page at Contoso Ltd. "

    ' Set the text property.
    Me.LinkLabel1.Text = textString

    ' Set the color of the links to black, unless the mouse
    ' is hovering over a link.
    Me.LinkLabel1.LinkColor = System.Drawing.Color.Black
    Me.LinkLabel1.ActiveLinkColor = System.Drawing.Color.Blue

    ' Add links to the LinkCollection using starting index and
    ' length of keywords.
    keywords = New String() {"company", "research"}
    Dim keyword As String
    For Each keyword In keywords
        Me.LinkLabel1.Links.Add(textString.IndexOf(keyword), keyword.Length)
    Next

    ' Add the label to the form.
    Me.Controls.Add(Me.LinkLabel1)
End Sub

Private Sub LinkLabel1_LinkClicked(ByVal sender As Object, _
    ByVal e As LinkLabelLinkClickedEventArgs) _
    Handles LinkLabel1.LinkClicked

    Dim url As String

    ' Determine which link was clicked and set the appropriate url.
    Select Case LinkLabel1.Links.IndexOf(e.Link)
        Case 0
            url = "www.microsoft.com"

        Case 1
            url = "www.contoso.com/research"
    End Select

    ' Set the visited property to True. This will change
    ' the color of the link.
    e.Link.Visited = True

    ' Open Internet Explorer to the correct url.
    System.Diagnostics.Process.Start("IExplore.exe", url)
End Sub

// Declare the LinkLabel object.
internal System.Windows.Forms.LinkLabel LinkLabel1;

// Declare keywords array to identify links
string[] keywords;

private void InitializeLinkLabel()
{
    this.LinkLabel1 = new System.Windows.Forms.LinkLabel();
            this.LinkLabel1.Links.Clear();

    // Set the location, name and size.
    this.LinkLabel1.Location = new System.Drawing.Point(10, 20);
    this.LinkLabel1.Name = "CompanyLinks";
    this.LinkLabel1.Size = new System.Drawing.Size(104, 150);

    // Set the LinkBehavior property to show underline when mouse
    // hovers over the links.
    this.LinkLabel1.LinkBehavior = System.Windows.Forms.LinkBehavior.HoverUnderline;
    string textString = "For more information see our" +
        " company website or the research page at Contoso Ltd. ";

    // Set the text property.
    this.LinkLabel1.Text = textString;

    // Set the color of the links to black, unless the mouse
    // is hovering over a link.
    this.LinkLabel1.LinkColor = System.Drawing.Color.Black;
    this.LinkLabel1.ActiveLinkColor = System.Drawing.Color.Blue;

    // Associate the event-handling method with the LinkClicked
    // event.
    this.LinkLabel1.LinkClicked += 
        new LinkLabelLinkClickedEventHandler(LinkLabel1_LinkClicked);

    // Add links to the LinkCollection using starting index and
    // length of keywords.
    keywords = new string[]{"company", "research"};
    foreach ( string keyword in keywords )
    {
        this.LinkLabel1.Links.Add(textString.IndexOf(keyword), keyword.Length);
    }

    // Add the label to the form.
    this.Controls.Add(this.LinkLabel1);
}

private void LinkLabel1_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
{

    string url = "";

    // Determine which link was clicked and set the appropriate url.
    switch(LinkLabel1.Links.IndexOf(e.Link))
    {
        case 0:
            url = "www.microsoft.com";

            break;
        case 1:
            url = "www.contoso.com/research";
            break;
    }

    // Set the visited property to True. This will change
    // the color of the link.
    e.Link.Visited = true;

    // Open Internet Explorer to the correct url.
    System.Diagnostics.Process.Start("IExplore.exe", url);
}

   // Declare the LinkLabel object.
internal:
   System::Windows::Forms::LinkLabel^ LinkLabel1;

   // Declare keywords array to identify links
   array<String^>^keywords;

private:
   void InitializeLinkLabel()
   {
      this->LinkLabel1 = gcnew System::Windows::Forms::LinkLabel;
      this->LinkLabel1->Links->Clear();
      // Set the location, name and size.
      this->LinkLabel1->Location = System::Drawing::Point( 10, 20 );
      this->LinkLabel1->Name = "CompanyLinks";
      this->LinkLabel1->Size = System::Drawing::Size( 104, 150 );
      
      // Set the LinkBehavior property to show underline when mouse
      // hovers over the links.
      this->LinkLabel1->LinkBehavior = System::Windows::Forms::LinkBehavior::HoverUnderline;
      String^ textString = "For more information see our"
      " company website or the research page at Contoso Ltd. ";
      
      // Set the text property.
      this->LinkLabel1->Text = textString;
      
      // Set the color of the links to black, unless the mouse
      // is hovering over a link.
      this->LinkLabel1->LinkColor = System::Drawing::Color::Black;
      this->LinkLabel1->ActiveLinkColor = System::Drawing::Color::Blue;
      
      // Associate the event-handling method with the LinkClicked
      // event.
      this->LinkLabel1->LinkClicked += gcnew LinkLabelLinkClickedEventHandler( this, &Form1::LinkLabel1_LinkClicked );
      
      // Add links to the LinkCollection using starting index and
      // length of keywords.
      array<String^>^temp0 = {"company","research"};
      keywords = temp0;
      System::Collections::IEnumerator^ myEnum = keywords->GetEnumerator();
      while ( myEnum->MoveNext() )
      {
         String^ keyword = safe_cast<String^>(myEnum->Current);
         this->LinkLabel1->Links->Add( textString->IndexOf( keyword ), keyword->Length );
      }

      
      // Add the label to the form.
      this->Controls->Add( this->LinkLabel1 );
   }

   void LinkLabel1_LinkClicked( Object^ /*sender*/, LinkLabelLinkClickedEventArgs^ e )
   {
      String^ url = "";
      
      // Determine which link was clicked and set the appropriate url.
      switch ( LinkLabel1->Links->IndexOf( e->Link ) )
      {
         case 0:
            url = "www.microsoft.com";
            break;

         case 1:
            url = "www.contoso.com/research";
            break;
      }
      
      // Set the visited property to True. This will change
      // the color of the link.
      e->Link->Visited = true;
      
      // Open Internet Explorer to the correct url.
      System::Diagnostics::Process::Start( "IExplore.exe", url );
   }

// Declare the LinkLabel object.
private System.Windows.Forms.LinkLabel linkLabel1;

// Declare keywords array to identify links
private String keywords[];

private void InitializeLinkLabel()
{
    this.linkLabel1 = new System.Windows.Forms.LinkLabel();
    // Set the location, name and size.
    this.linkLabel1.set_Location(new System.Drawing.Point(10, 20));
    this.linkLabel1.set_Name("CompanyLinks");
    this.linkLabel1.set_Size(new System.Drawing.Size(104, 150));
    // Set the LinkBehavior property to show underline when mouse
    // hovers over the links.
    this.linkLabel1.set_LinkBehavior(
        System.Windows.Forms.LinkBehavior.HoverUnderline);
    String textString = "For more information see our" 
        + " company website or the research page at Contoso Ltd. ";
    // Set the text property.
    this.linkLabel1.set_Text(textString);
    // Set the color of the links to black, unless the mouse
    // is hovering over a link.
    this.linkLabel1.set_LinkColor(System.Drawing.Color.get_Black());
    this.linkLabel1.set_ActiveLinkColor(System.Drawing.Color.get_Blue());
    // Associate the event-handling method with the LinkClicked
    // event.
    this.linkLabel1.add_LinkClicked(new LinkLabelLinkClickedEventHandler(
        linkLabel1_LinkClicked));
    // Add links to the LinkCollection using starting index and
    // length of keywords.
    keywords = new String[] { "company", "research" };
    for (int iCtr = 0; iCtr < keywords.length; iCtr++) {
        String keyword = keywords[iCtr];
        this.linkLabel1.get_Links().Add(textString.IndexOf(keyword), 
            keyword.get_Length());
    }
    // Add the label to the form.
    this.get_Controls().Add(this.linkLabel1);
} //InitializeLinkLabel

private void linkLabel1_LinkClicked(Object sender, 
    LinkLabelLinkClickedEventArgs e)
{
    String url = "";
    // Determine which link was clicked and set the appropriate url.
    switch (linkLabel1.get_Links().IndexOf(e.get_Link())) {
        case 0:
            url = "www.microsoft.com";
            break;

        case 1:
            url = "www.contoso.com/research";
            break;
    }
    // Set the visited property to True. This will change
    // the color of the link.
    e.get_Link().set_Visited(true);
    // Open Internet Explorer to the correct url.
    System.Diagnostics.Process.Start("IExplore.exe", url);
} //linkLabel1_LinkClicked

平台

Windows 98、Windows 2000 SP4、Windows CE、Windows Millennium Edition、Windows Mobile for Pocket PC、Windows Mobile for Smartphone、Windows Server 2003、Windows XP Media Center Edition、Windows XP Professional x64 Edition、Windows XP SP2、Windows XP Starter Edition

.NET Framework 并不是对每个平台的所有版本都提供支持。有关受支持版本的列表，请参见系统要求。

版本信息

.NET Framework

受以下版本支持：2.0、1.1、1.0

请参见

参考

System.Windows.Forms 命名空间
LinkLabel
LinkBehavior