Repeater.ItemCreated-Ereignis
Tritt ein, wenn im Repeater-Steuerelement ein Element erstellt wird.
Namespace: System.Web.UI.WebControls
Assembly: System.Web (in system.web.dll)
Syntax
'Declaration
Public Event ItemCreated As RepeaterItemEventHandler
'Usage
Dim instance As Repeater
Dim handler As RepeaterItemEventHandler
AddHandler instance.ItemCreated, handler
public event RepeaterItemEventHandler ItemCreated
public:
event RepeaterItemEventHandler^ ItemCreated {
void add (RepeaterItemEventHandler^ value);
void remove (RepeaterItemEventHandler^ value);
}
/** @event */
public void add_ItemCreated (RepeaterItemEventHandler value)
/** @event */
public void remove_ItemCreated (RepeaterItemEventHandler value)
JScript unterstützt die Verwendung von Ereignissen, aber nicht die Deklaration von neuen Ereignissen.
Hinweise
Dieses Ereignis wird ausgelöst, wenn im Repeater-Steuerelement ein Element erstellt wird.
Weitere Informationen zur Behandlung von Ereignissen finden Sie unter Behandeln von Ereignissen.
Beispiel
Das folgende Beispiel veranschaulicht, wie Sie für das ItemCreated-Ereignis des Repeater-Steuerelements einen Handler angeben und codieren können. Eine neue Textzeile, die angibt, dass bei jedem Erstellen eines Repeater-Elements der Elementtyp angezeigt wird.
<%@ Page Language="VB" AutoEventWireup="True" %>
<html>
<head>
<script language="VB" runat="server">
Dim Count As Integer = 1
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_ItemCreated(Sender As Object, e As RepeaterItemEventArgs)
Dim iTypeText As String = ""
Select Case e.Item.ItemType
Case ListItemType.Item
iTypeText = "Item"
Case ListItemType.AlternatingItem
iTypeText = "AlternatingItem"
Case ListItemType.Header
iTypeText = "Header"
Case ListItemType.Footer
iTypeText = "Footer"
Case ListItemType.Separator
iTypeText = "Separator"
End Select
Count = Count + 1
Label1.Text &= "(" & Count & ") A Repeater " & iTypeText & _
" has been created; <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 'New
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 OnItemCreated="R1_ItemCreated" 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> <%# DataBinder.Eval(Container.DataItem, "Ticker") %> </td>
</tr>
</ItemTemplate>
<FooterTemplate>
</table>
</FooterTemplate>
</asp:Repeater>
<p>
<asp:Label id=Label1 font-name="Verdana" ForeColor="Red" font-size="10pt" runat="server"/>
</form>
</body>
</html>
<%@ Page Language="C#" AutoEventWireup="True" %>
<html>
<head>
<script language="C#" runat="server">
int Count = 1;
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_ItemCreated(Object Sender, RepeaterItemEventArgs e) {
String iTypeText = "";
switch (e.Item.ItemType) {
case ListItemType.Item:
iTypeText = "Item";
break;
case ListItemType.AlternatingItem:
iTypeText = "AlternatingItem";
break;
case ListItemType.Header:
iTypeText = "Header";
break;
case ListItemType.Footer:
iTypeText = "Footer";
break;
case ListItemType.Separator:
iTypeText = "Separator";
break;
}
Label1.Text += "(" + Count++ + ") A Repeater " + iTypeText + " has been created; <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 OnItemCreated="R1_ItemCreated" 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> <%# DataBinder.Eval(Container.DataItem, "Ticker") %> </td>
</tr>
</ItemTemplate>
<FooterTemplate>
</table>
</FooterTemplate>
</asp:Repeater>
<p>
<asp:Label id=Label1 font-name="Verdana" ForeColor="Red" font-size="10pt" runat="server"/>
</form>
</body>
</html>
Plattformen
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 unterstützt nicht alle Versionen sämtlicher Plattformen. Eine Liste der unterstützten Versionen finden Sie unter Systemanforderungen.
Versionsinformationen
.NET Framework
Unterstützt in: 2.0, 1.1, 1.0
Siehe auch
Referenz
Repeater-Klasse
Repeater-Member
System.Web.UI.WebControls-Namespace
OnItemCreated
RepeaterItemEventArgs
RepeaterItemEventHandler