共用方式為

HtmlInputText.ServerChange 事件

  • 參考

定義

命名空間:
System.Web.UI.HtmlControls
組件:
System.Web.dll

發生於 Value 屬性在伺服器上變更時。

public:
 event EventHandler ^ ServerChange;
public event EventHandler ServerChange;
member this.ServerChange : EventHandler 
Public Custom Event ServerChange As EventHandler

事件類型

EventHandler

範例

下列程式碼範例示範如何指定 和 撰寫 ServerChange 事件的處理常式程式碼。 自訂事件處理常式會更新網頁上的標籤，以顯示在 HTML 元素中 <input type=text> 輸入的文字值。


<%@ 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>HtmlInputText ServerChange Example</title>
<script runat="server">

      void Server_Change(object sender, EventArgs e) 
      {
         Span1.InnerHtml = "You typed: " + Text1.Value;
      }

      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.
         Text1.ServerChange += new System.EventHandler(this.Server_Change);
      }         

   </script>

</head>

<body>

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

      <h3>HtmlInputText ServerChange Example</h3>

      Enter a value in the input field below and 
      click the Submit button.

      <br />

      <input type="text" 
             id="Text1" 
             runat="server"/>
      <br />

      <br />

      <input type="submit" 
             id="Button1" 
             value="Submit" 
             runat="server"/>

      <br />

      <span id="Span1" 
            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>HtmlInputText ServerChange Example</title>
<script runat="server">

     Sub Server_Change(ByVal sender As Object, ByVal e As EventArgs)

       Span1.InnerHtml = String.Format("You typed: {0}", Text1.Value)

     End Sub

     Sub Page_Load(ByVal sender As Object, ByVal 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 Text1.ServerChange, AddressOf Server_Change
      
     End Sub

   </script>

</head>

<body>

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

      <h3>HtmlInputText ServerChange Example</h3>

      Enter a value in the input field below and 
      click the Submit button.

      <br />

      <input type="text" 
             id="Text1" 
             runat="server"/>
      <br />

      <input type="submit" 
             id="Button1" 
             value="Submit" 
             runat="server"/>

      <br />

      <span id="Span1" 
            runat="server" />

   </form>

</body>
</html>

備註

當 ServerChange 伺服器上的 屬性變更時 Value ，就會引發 事件。

注意

控制項必須啟用檢視狀態， ServerChange 事件才能正常運作。

如需如何處理事件的詳細資訊，請參閱 處理和引發事件。

適用於

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