HtmlAnchor.OnServerClick(EventArgs) 方法

定义

引发 ServerClick 事件。 这使你可以为事件提供自定义处理程序。

protected:
 virtual void OnServerClick(EventArgs ^ e);
protected virtual void OnServerClick (EventArgs e);
abstract member OnServerClick : EventArgs -> unit
override this.OnServerClick : EventArgs -> unit
Protected Overridable Sub OnServerClick (e As EventArgs)

参数

e
EventArgs

包含事件数据的 EventArgs

示例

下面的代码示例演示如何以声明方式指定事件事件处理程序并为其 ServerClick 编写代码。 单击控件 HtmlAnchor 时,将显示一条消息。


<%@ 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> HtmlAnchor ServerClick Event Example </title>
<script runat="server">

      void HtmlAnchor_Click(Object sender, EventArgs e)
      {
         
         Message.InnerHtml = "Thank you for clicking the HtmlAnchor control.";

      }

   </script>

</head>

<body>

   <form id="form1" runat="server">

      <h3> HtmlAnchor ServerClick Event Example </h3>

      <a id="AnchorButton"
         onserverclick="HtmlAnchor_Click"
         runat="server">

         Click Here

      </a>

      <br /><br />

      <span id="Message" 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> HtmlAnchor ServerClick Event Example </title>
<script runat="server">

      Sub HtmlAnchor_Click(sender As Object, e As EventArgs)
         
         Message.InnerHtml = "Thank you for clicking the HtmlAnchor control."

      End Sub

   </script>

</head>

<body>

   <form id="form1" runat="server">

      <h3> HtmlAnchor ServerClick Event Example </h3>

      <a id="AnchorButton"
         onserverclick="HtmlAnchor_Click"
         runat="server">

         Click Here

      </a>

      <br /><br />

      <span id="Message" runat="server"/>

   </form>

</body>
</html>

下面的代码示例修改前面的示例,以编程方式指定和编码事件的事件处理程序 ServerClick


<%@ 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> HtmlAnchor ServerClick Event Example </title>
<script runat="server">

      void Page_Load(Object sender, EventArgs e)
      {
       
         // Create an EventHandler delegate for the method you want to handle the event
         // and then add it to the list of methods called when the event is raised.
         AnchorButton.ServerClick += new System.EventHandler(this.HtmlAnchor_Click);

      }

      void HtmlAnchor_Click(Object sender, EventArgs e)
      {
         
         Message.InnerHtml = "Thank you for clicking the HtmlAnchor control.";

      }

   </script>

</head>

<body>

   <form id="form1" runat="server">

      <h3> HtmlAnchor ServerClick Event Example </h3>

      <a id="AnchorButton"
         runat="server">

         Click Here

      </a>

      <br /><br />

      <span id="Message" 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> HtmlAnchor ServerClick Event Example </title>
<script runat="server">

      Sub Page_Load(sender As Object, e As EventArgs)
       
         ' Create an EventHandler delegate for the method you want to handle the event
         ' and then add it to the list of methods called when the event is raised. 
         AddHandler AnchorButton.ServerClick, AddressOf HtmlAnchor_Click

      End Sub

      Sub HtmlAnchor_Click(sender As Object, e As EventArgs)
         
         Message.InnerHtml = "Thank you for clicking the HtmlAnchor control."

      End Sub

   </script>

</head>

<body>

   <form id="form1" runat="server">

      <h3> HtmlAnchor ServerClick Event Example </h3>

      <a id="AnchorButton"
         runat="server">

         Click Here

      </a>

      <br /><br />

      <span id="Message" runat="server"/>

   </form>

</body>
</html>

注解

单击 ServerClick 控件时将 HtmlAnchor 引发 该事件。 此服务器事件会导致从客户端到服务器以及返回的往返。

引发事件时,将通过委托调用事件处理程序。 有关详细信息,请参阅 处理和引发事件

OnServerClick 方法还允许派生类对事件进行处理而不必附加委托。 这是在派生类中处理事件的首选技术。

继承者说明

在派生类中重写 OnServerClick(EventArgs) 时,一定要调用基类的 OnServerClick(EventArgs) 方法,以便已注册的委托对事件进行接收。

适用于

另请参阅