通过

RepeaterCommandEventHandler 委托

  • 项目

表示将要处理 Repeater 的 ItemCommand 事件的方法。

**命名空间:**System.Web.UI.WebControls
**程序集:**System.Web（在 system.web.dll 中）

语法

声明
Public Delegate Sub RepeaterCommandEventHandler ( _
    source As Object, _
    e As RepeaterCommandEventArgs _
)
用法
Dim instance As New RepeaterCommandEventHandler(AddressOf HandlerMethod)

public delegate void RepeaterCommandEventHandler (
    Object source,
    RepeaterCommandEventArgs e
)

public delegate void RepeaterCommandEventHandler (
    Object^ source, 
    RepeaterCommandEventArgs^ e
)

/** @delegate */
public delegate void RepeaterCommandEventHandler (
    Object source, 
    RepeaterCommandEventArgs e
)

JScript 支持使用委托，但不支持进行新的声明。

参数

  • source
    事件源。

备注

当创建 RepeaterCommandEventHandler 委托时，将标识处理事件的方法。若要使该事件与事件处理程序相关联，请将该委托的一个实例添加到事件中。除非移除了该委托，否则每当发生该事件时就调用事件处理程序。有关事件处理程序委托的更多信息，请参见 事件和委托。

有关处理事件的更多信息，请参见 使用事件。

示例

下面的示例说明如何指定和编写 Repeater 的 ItemCommand 事件的处理程序。当单击 Repeater 中的某个 Button 控件时，会显示有关该按钮的信息。

<%@ Page Language="VB" AutoEventWireup="True" %>
<html>
 <head>
    <script language="VB" runat="server">

    Sub Page_Load(Sender As Object, e As EventArgs)
        
        If Not IsPostBack Then
            Dim values As New ArrayList()
            
            values.Add(New PositionData("Microsoft", "Msft"))
            values.Add(New PositionData("Intel", "Intc"))
            values.Add(New PositionData("Dell", "Dell"))
            
            Repeater1.DataSource = values
            Repeater1.DataBind()
        End If
    End Sub

    Sub R1_ItemCommand(Sender As Object, e As RepeaterCommandEventArgs)
        Label2.Text = "The " & CType(e.CommandSource, Button).Text & _
            " button has just been clicked; <br>"
    End Sub
 
    Public Class PositionData
        
        Private myName As String
        Private myTicker As String        
        
        Public Sub New(newName As String, newTicker As String)
            Me.myName = newName
            Me.myTicker = newTicker
        End Sub        
        
        Public ReadOnly Property Name() As String
            Get
                Return myName
            End Get
        End Property        
        
        Public ReadOnly Property Ticker() As String
            Get
                Return myTicker
            End Get
        End Property
    End Class
 
    </script>
 
 </head>
 <body>
 
    <h3>Repeater Example</h3>
 
    <form runat=server>
 
       <b>Repeater1:</b>
         
       <p>
         
       <asp:Repeater id=Repeater1 OnItemCommand="R1_ItemCommand" runat="server">
          <HeaderTemplate>
             <table border=1>
                <tr>
                   <td><b>Company</b></td>
                   <td><b>Symbol</b></td>
                </tr>
          </HeaderTemplate>
             
          <ItemTemplate>
             <tr>
                <td> <%# DataBinder.Eval(Container.DataItem, "Name") %> </td>
                <td> <ASP:Button Text=<%# DataBinder.Eval(Container.DataItem, "Ticker") %> runat="server" /></td>
             </tr>
          </ItemTemplate>
             
          <FooterTemplate>
             </table>

          </FooterTemplate>
             
       </asp:Repeater>
       <p>
         
       <asp:Label id=Label2 font-name="Verdana" ForeColor="Green" font-size="10pt" runat="server"/>
    </form>
 </body>
 </html>
    

<%@ Page Language="C#" AutoEventWireup="True" %>
<html>
 <head>
    <script language="C#" runat="server">
       void Page_Load(Object Sender, EventArgs e) {
 
          if (!IsPostBack) {
             ArrayList values = new ArrayList();
 
             values.Add(new PositionData("Microsoft", "Msft"));
             values.Add(new PositionData("Intel", "Intc"));
             values.Add(new PositionData("Dell", "Dell"));
 
             Repeater1.DataSource = values;
             Repeater1.DataBind();
          }
       }
 
       void R1_ItemCommand(Object Sender, RepeaterCommandEventArgs e) {        
          Label2.Text = "The " + ((Button)e.CommandSource).Text + " button has just been clicked; <br>";
       }    
 
       public class PositionData {
         
          private string name;
          private string ticker;
 
          public PositionData(string name, string ticker) {
             this.name = name;
             this.ticker = ticker;
          }
 
          public string Name {
             get {
                return name;
             }
          }
 
          public string Ticker {
             get {
                return ticker;
             }
          }
       }
 
    </script>
 
 </head>
 <body>
 
    <h3>Repeater Example</h3>
 
    <form runat=server>
 
       <b>Repeater1:</b>
         
       <p>
         
       <asp:Repeater id=Repeater1 OnItemCommand="R1_ItemCommand" runat="server">
          <HeaderTemplate>
             <table border=1>
                <tr>
                   <td><b>Company</b></td>
                   <td><b>Symbol</b></td>
                </tr>
          </HeaderTemplate>
             
          <ItemTemplate>
             <tr>
                <td> <%# DataBinder.Eval(Container.DataItem, "Name") %> </td>
                <td> <ASP:Button Text=<%# DataBinder.Eval(Container.DataItem, "Ticker") %> runat="server" /></td>
             </tr>
          </ItemTemplate>
             
          <FooterTemplate>
             </table>

          </FooterTemplate>
             
       </asp:Repeater>
       <p>
         
       <asp:Label id=Label2 font-name="Verdana" ForeColor="Green" font-size="10pt" runat="server"/>
    </form>
 </body>
 </html>

平台

Windows 98、Windows 2000 SP4、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.Web.UI.WebControls 命名空间
Repeater 类
Repeater.ItemCommand 事件
RepeaterCommandEventArgs 类

其他资源

Repeater Web 服务器控件