Namespace:
System.Web.UI.WebControls
Assembly:
System.Web (in System.Web.dll)
Visual Basic (Declaration)
Protected Overridable Sub OnItemDataBound ( _
e As RepeaterItemEventArgs _
)
Dim e As RepeaterItemEventArgs
Me.OnItemDataBound(e)
protected virtual void OnItemDataBound(
RepeaterItemEventArgs e
)
protected:
virtual void OnItemDataBound(
RepeaterItemEventArgs^ e
)
protected function OnItemDataBound(
e : RepeaterItemEventArgs
)
Raising an event invokes the event handler through a delegate. For more information, see Consuming Events.
Notes to Inheritors: When overriding OnItemDataBound in a derived class, be sure to call the base class's OnItemDataBound method.
The following example illustrates a way to handle the ItemDataBound event of the Repeater control. The data is modified after it is bound to an item in the Repeater control but before it is rendered on the page.
<%@ 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">
<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 Evaluation("Razor Wiper Blades", "Good"))
values.Add(New Evaluation("Shoe-So-Soft Softening Polish", "Poor"))
values.Add(New Evaluation("DynaSmile Dental Fixative", "Fair"))
Repeater1.DataSource = values
Repeater1.DataBind()
End If
End Sub
Sub R1_ItemDataBound(Sender As Object, e As RepeaterItemEventArgs)
' This event is raised for the header, the footer, separators, and items.
' Execute the following logic for Items and Alternating Items.
If (e.Item.ItemType = ListItemType.Item) Or _
(e.Item.ItemType = ListItemType.AlternatingItem) Then
If CType(e.Item.DataItem, Evaluation).Rating = "Good" Then
CType(e.Item.FindControl("RatingLabel"), Label).Text = _
"<b>***Good***</b>"
End If
End If
End Sub
Public Class Evaluation
Private myProductid As String
Private myRating As String
Public Sub New(newProductid As String, newRating As String)
Me.myProductid = newProductid
Me.myRating = newRating
End Sub
Public ReadOnly Property ProductID() As String
Get
Return myProductid
End Get
End Property
Public ReadOnly Property Rating() As String
Get
Return myRating
End Get
End Property
End Class
</script>
<html >
<head>
<title>OnItemDataBound Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>OnItemDataBound Example</h3>
<br />
<asp:Repeater id="Repeater1" OnItemDataBound="R1_ItemDataBound" runat="server">
<HeaderTemplate>
<table border="1">
<tr>
<td><b>Product</b></td>
<td><b>Consumer Rating</b></td>
</tr>
</HeaderTemplate>
<ItemTemplate>
<tr>
<td> <asp:Label Text='<%# DataBinder.Eval(Container.DataItem, "ProductID") %>' Runat="server"/> </td>
<td> <asp:Label id="RatingLabel" Text='<%# DataBinder.Eval(Container.DataItem, "Rating") %>' Runat="server"/> </td>
</tr>
</ItemTemplate>
<FooterTemplate>
</table>
</FooterTemplate>
</asp:Repeater>
<br />
</form>
</body>
</html>
<%@ 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 >
<head>
<title>OnItemDataBound Example</title>
<script language="C#" runat="server">
void Page_Load(Object Sender, EventArgs e) {
if (!IsPostBack) {
ArrayList values = new ArrayList();
values.Add(new Evaluation("Razor Wiper Blades", "Good"));
values.Add(new Evaluation("Shoe-So-Soft Softening Polish", "Poor"));
values.Add(new Evaluation("DynaSmile Dental Fixative", "Fair"));
Repeater1.DataSource = values;
Repeater1.DataBind();
}
}
void R1_ItemDataBound(Object Sender, RepeaterItemEventArgs e) {
// This event is raised for the header, the footer, separators, and items.
// Execute the following logic for Items and Alternating Items.
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem) {
if (((Evaluation)e.Item.DataItem).Rating == "Good") {
((Label)e.Item.FindControl("RatingLabel")).Text= "<b>***Good***</b>";
}
}
}
public class Evaluation {
private string productid;
private string rating;
public Evaluation(string productid, string rating) {
this.productid = productid;
this.rating = rating;
}
public string ProductID {
get {
return productid;
}
}
public string Rating {
get {
return rating;
}
}
}
</script>
</head>
<body>
<h3>OnItemDataBound Example</h3>
<form id="form1" runat="server">
<br />
<asp:Repeater id="Repeater1" OnItemDataBound="R1_ItemDataBound" runat="server">
<HeaderTemplate>
<table border="1">
<tr>
<td><b>Product</b></td>
<td><b>Consumer Rating</b></td>
</tr>
</HeaderTemplate>
<ItemTemplate>
<tr>
<td> <asp:Label Text='<%# DataBinder.Eval(Container.DataItem, "ProductID") %>' Runat="server"/> </td>
<td> <asp:Label id="RatingLabel" Text='<%# DataBinder.Eval(Container.DataItem, "Rating") %>' Runat="server"/> </td>
</tr>
</ItemTemplate>
<FooterTemplate>
</table>
</FooterTemplate>
</asp:Repeater>
<br />
</form>
</body>
</html>
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
.NET Framework
Supported in: 3.5, 3.0, 2.0, 1.1, 1.0
Reference
Other Resources