Repeater.OnItemCreated(RepeaterItemEventArgs) 方法
定义
重要
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引发 ItemCreated 事件。
protected:
virtual void OnItemCreated(System::Web::UI::WebControls::RepeaterItemEventArgs ^ e);
protected virtual void OnItemCreated (System.Web.UI.WebControls.RepeaterItemEventArgs e);
abstract member OnItemCreated : System.Web.UI.WebControls.RepeaterItemEventArgs -> unit
override this.OnItemCreated : System.Web.UI.WebControls.RepeaterItemEventArgs -> unit
Protected Overridable Sub OnItemCreated (e As RepeaterItemEventArgs)
参数
包含事件数据的 RepeaterItemEventArgs 对象。
示例
下面的示例演示了一种处理 ItemCreated 控件的 Repeater 事件的方法。 每当创建项时,将显示 Repeater 指示项类型的新文本行。
<%@ 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">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>Repeater Example</title>
<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 id="form1" runat="server">
<b>Repeater1:</b>
<br />
<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>
<br />
<asp:Label id="Label1" font-names="Verdana" ForeColor="Red" 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">
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 id="form1" runat="server">
<b>Repeater1:</b>
<br />
<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>
<br />
<asp:Label id="Label1" font-names="Verdana" ForeColor="Red" font-size="10pt" runat="server"/>
</form>
</body>
</html>
注解
引发事件时,将通过委托调用事件处理程序。 有关如何处理事件的详细信息,请参阅 处理和引发事件。
继承者说明
在派生类中重写 OnItemCreated(RepeaterItemEventArgs) 时,请务必调用基类的 OnItemCreated(RepeaterItemEventArgs) 方法。