通过

Repeater.ItemCommand 事件

  • 项目

当单击 Repeater 控件中的按钮时发生。

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

语法

声明
Public Event ItemCommand As RepeaterCommandEventHandler
用法
Dim instance As Repeater
Dim handler As RepeaterCommandEventHandler

AddHandler instance.ItemCommand, handler

public event RepeaterCommandEventHandler ItemCommand

public:
event RepeaterCommandEventHandler^ ItemCommand {
    void add (RepeaterCommandEventHandler^ value);
    void remove (RepeaterCommandEventHandler^ value);
}

/** @event */
public void add_ItemCommand (RepeaterCommandEventHandler value)

/** @event */
public void remove_ItemCommand (RepeaterCommandEventHandler value)

JScript 支持使用事件，但不支持进行新的声明。

备注

当单击 Repeater 控件中的按钮时引发此事件。

该事件导致出现始于客户端的往返。

有关处理事件的更多信息，请参见 使用事件。

示例

下面的示例演示如何指定和编写 Repeater 控件的 ItemCommand 事件的处理程序。当单击 Repeater 控件中的某个 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

Repeater 类
Repeater 成员
System.Web.UI.WebControls 命名空间
OnItemCommand
RepeaterCommandEventArgs
RepeaterCommandEventHandler

其他资源

Repeater Web 服务器控件