LinkButton.Command 事件

  • 参考

定义

命名空间:
System.Web.UI.WebControls
程序集:
System.Web.dll

在单击 LinkButton 控件时发生。

public:
 event System::Web::UI::WebControls::CommandEventHandler ^ Command;
public:
 virtual event System::Web::UI::WebControls::CommandEventHandler ^ Command;
public event System.Web.UI.WebControls.CommandEventHandler Command;
member this.Command : System.Web.UI.WebControls.CommandEventHandler 
Public Custom Event Command As CommandEventHandler

事件类型

CommandEventHandler

实现

Command

示例

下面的示例演示如何为 事件指定和编码处理程序， Click 以便在单击控件时 LinkButton 显示消息。

<%@ Page Language="C#" AutoEventWireup="True" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
    <title>LinkButton Command Event Example</title>
<script language="C#" runat="server">
     
      void LinkButton_Command(Object sender, CommandEventArgs e) 
      {
         Label1.Text = "You chose: " + e.CommandName + " Item " + e.CommandArgument;
      }
 
   </script>
 
</head>
<body>
 
   <form id="form1" runat="server">
 
      <h3>LinkButton Command Event Example</h3>
  
      <asp:LinkButton id="LinkButton1" 
           Text="Order Item 10001"
           CommandName="Order" 
           CommandArgument="10001" 
           OnCommand="LinkButton_Command" 
           runat="server"/>
 
      <br />
  
      <asp:LinkButton id="LinkButton2" 
           Text="Order Item 10002"
           CommandName="Order" 
           CommandArgument="10002" 
           OnCommand="LinkButton_Command" 
           Runat="server"/>
 
      <br />
      <br />
 
      <asp:Label id="Label1" runat="server"/>
 
   </form>

</body>
</html>

<%@ Page Language="VB" AutoEventWireup="True" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
    <title>LinkButton Command Event Example</title>
<script language="VB" runat="server">
     
      Sub LinkButton_Command(sender As Object, e As CommandEventArgs) 
         Label1.Text = "You chose: " & e.CommandName & " Item " & _
            e.CommandArgument
      End Sub
 
   </script>
 
</head>
<body>
 
   <form id="form1" runat="server">
 
      <h3>LinkButton Command Event Example</h3>
  
      <asp:LinkButton id="LinkButton1" 
           Text="Order Item 10001"
           CommandName="Order" 
           CommandArgument="10001" 
           OnCommand="LinkButton_Command" 
           runat="server"/>
 
      <br />
  
      <asp:LinkButton id="LinkButton2" 
           Text="Order Item 10002"
           CommandName="Order" 
           CommandArgument="10002" 
           OnCommand="LinkButton_Command" 
           Runat="server"/>
 
      <br />
      <br />
 
      <asp:Label id="Label1" runat="server"/>
 
   </form>

</body>
</html>

注解

单击 Command 控件时， LinkButton 将引发 事件。 当命令名称（如 Sort）与 LinkButton 控件关联时，通常使用此事件。 这允许你在网页上创建多个 LinkButton 控件，并通过编程方式确定单击哪个 LinkButton 控件。

备注

事件 Command 通过控件层次结构以 的形式 BubbleEvent引发。

有关如何处理事件的详细信息，请参阅 处理和引发事件。

适用于

另请参阅