Repeater.ItemCommand Evento

  • Riferimento

Definizione

Spazio dei nomi:
System.Web.UI.WebControls
Assembly:
System.Web.dll

Si verifica quando viene fatto clic su un pulsante nel controllo Repeater.

public:
 event System::Web::UI::WebControls::RepeaterCommandEventHandler ^ ItemCommand;
public event System.Web.UI.WebControls.RepeaterCommandEventHandler ItemCommand;
member this.ItemCommand : System.Web.UI.WebControls.RepeaterCommandEventHandler 
Public Custom Event ItemCommand As RepeaterCommandEventHandler

Tipo evento

RepeaterCommandEventHandler

Esempio

Nell'esempio seguente viene illustrato come specificare e codificare un gestore per l'evento ItemCommand del Repeater controllo . Le informazioni sul pulsante vengono visualizzate quando si fa clic su un Button controllo all'interno del Repeater controllo .

<%@ 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">
<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>
<html xmlns="http://www.w3.org/1999/xhtml" >
 <head>
    <title>Repeater Example</title>
 </head>
 <body>
 
    <h3>Repeater Example</h3>
 
    <form id="form1" runat="server">
 
       <b>Repeater1:</b>
         
       <br />
         
       <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>
       <br />
         
       <asp:Label id="Label2" font-names="Verdana" ForeColor="Green" font-size="10pt" 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>Repeater Example</title>
<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 id="form1" runat="server">
 
       <b>Repeater1:</b>
         
       <br />
         
       <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>
       <br />
         
       <asp:Label id="Label2" font-names="Verdana" ForeColor="Green" font-size="10pt" runat="server"/>
    </form>
 </body>
 </html>

Commenti

Questo evento viene generato quando si fa clic su un pulsante nel Repeater controllo .

Questo evento fa sì che si verifichi un round trip dal client.

Per altre informazioni su come gestire gli eventi, vedere la gestione e generazione di eventi.

Si applica a

Vedi anche