Repeater.OnDataBinding(EventArgs) Method
Definition
Important
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Raises the DataBinding
event.
protected:
override void OnDataBinding(EventArgs ^ e);
protected override void OnDataBinding (EventArgs e);
override this.OnDataBinding : EventArgs -> unit
Protected Overrides Sub OnDataBinding (e As EventArgs)
Parameters
Examples
The following code examples demonstrate how to override the OnDataBinding method in a custom server control so that if the event argument is a command type, the Repeater control always calls the OnItemCommand and bubbles up the event, or returns false
and cancels the event.
<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.CS.Controls" Assembly="Samples.AspNet.CS" %>
<%@ 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>Custom Repeater - OnDataBinding - C# Example</title>
<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();
}
}
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>
<form id="Form1" method="post" runat="server">
<h3>Custom Repeater - OnDataBinding - C# Example</h3>
<aspSample:CustomRepeaterOnDataBinding id="Repeater1" runat="server">
<HeaderTemplate>
<table border="1" cellpadding="4" cellspacing="0">
<tr>
<th>Company</th>
<th>Symbol</th>
</tr>
</HeaderTemplate>
<ItemTemplate>
<tr>
<td> <%# DataBinder.Eval(Container.DataItem, "Name") %></td>
<td> <%# DataBinder.Eval(Container.DataItem, "Ticker") %></td>
</tr>
</ItemTemplate>
<FooterTemplate>
</table>
</FooterTemplate>
</aspSample:CustomRepeaterOnDataBinding>
</form>
</body>
</html>
<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.VB.Controls" Assembly="Samples.AspNet.VB" %>
<%@ 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>Custom Repeater - OnDataBinding - VB.NET 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
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>
<form id="Form1" method="post" runat="server">
<h3>Custom Repeater - OnDataBinding - VB.NET Example</h3>
<aspSample:CustomRepeaterOnDataBinding id="Repeater1" runat="server" >
<HeaderTemplate>
<table border="1" cellpadding="4" cellspacing="0">
<tr>
<th>Company</th>
<th>Symbol</th>
</tr>
</HeaderTemplate>
<ItemTemplate>
<tr>
<td> <%# DataBinder.Eval(Container.DataItem, "Name") %></td>
<td> <%# DataBinder.Eval(Container.DataItem, "Ticker") %></td>
</tr>
</ItemTemplate>
<FooterTemplate>
</table>
</FooterTemplate>
</aspSample:CustomRepeaterOnDataBinding>
</form>
</body>
</html>
using System.Web;
using System.Security.Permissions;
namespace Samples.AspNet.CS.Controls
{
[AspNetHostingPermission(SecurityAction.Demand, Level=AspNetHostingPermissionLevel.Minimal)]
public sealed class CustomRepeaterOnDataBinding : System.Web.UI.WebControls.Repeater
{
protected override void OnDataBinding(System.EventArgs e)
{
// Raise the OnDataBinding event.
base.OnDataBinding(e);
// Clear out the controls collection and child viewstate.
this.Controls.Clear();
this.ClearChildViewState();
// Create a new control hierarchy.
this.CreateControlHierarchy(true);
this.ChildControlsCreated = true;
}
}
}
Imports System.Web
Imports System.Security.Permissions
Namespace Samples.AspNet.VB.Controls
<AspNetHostingPermission(SecurityAction.Demand, Level:=AspNetHostingPermissionLevel.Minimal)> _
Public NotInheritable Class CustomRepeaterOnDataBinding
Inherits System.Web.UI.WebControls.Repeater
Protected Overrides Sub OnDataBinding(ByVal e As System.EventArgs)
' Raise the OnDataBinding event.
MyBase.OnDataBinding(e)
' Clear out the controls collection and child viewstate.
Me.Controls.Clear()
Me.ClearChildViewState()
' Create a new control hierarchy.
Me.CreateControlHierarchy(True)
Me.ChildControlsCreated = True
End Sub
End Class
End Namespace
Applies to
See also
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