Repeater.OnItemCreated-Methode
Löst das ItemCreated-Ereignis aus.
Namespace: System.Web.UI.WebControls
Assembly: System.Web (in system.web.dll)
Syntax
'Declaration
Protected Overridable Sub OnItemCreated ( _
e As RepeaterItemEventArgs _
)
'Usage
Dim e As RepeaterItemEventArgs
Me.OnItemCreated(e)
protected virtual void OnItemCreated (
RepeaterItemEventArgs e
)
protected:
virtual void OnItemCreated (
RepeaterItemEventArgs^ e
)
protected void OnItemCreated (
RepeaterItemEventArgs e
)
protected function OnItemCreated (
e : RepeaterItemEventArgs
)
Parameter
- e
Das RepeaterItemEventArgs-Objekt, das die Ereignisdaten enthält.
Hinweise
Durch das Auslösen eines Ereignisses wird der Ereignishandler über einen Delegaten aufgerufen. Weitere Informationen finden Sie unter Behandeln von Ereignissen.
Hinweise für Erben Wenn Sie OnItemCreated in einer abgeleiteten Klasse überschreiben, müssen Sie die OnItemCreated-Methode der Basisklasse aufrufen.
Beispiel
Im folgenden Beispiel wird eine Methode für die Behandlung des ItemCreated-Ereignisses des Repeater-Steuerelements veranschaulicht. 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
ItemCreated
RepeaterItemEventArgs
RepeaterItemEventHandler