Repeater.DataBind Method
Definition
Important
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Binds the Repeater control and all its child controls to the specified data source.
public:
override void DataBind();public override void DataBind ();override this.DataBind : unit -> unitPublic Overrides Sub DataBind ()Examples
The following code example demonstrates how to override the DataBind method in a custom server control so that it always raises a data binding event in a custom Repeater server control.
<%@ 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 - DataBind - 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 - DataBind - C# Example</h3>
<aspSample:CustomRepeaterDataBind 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:CustomRepeaterDataBind>
</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 - DataBind - 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 - DataBind - VB.NET Example</h3>
<aspSample:CustomRepeaterDataBind 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:CustomRepeaterDataBind>
</form>
</body>
</html>
using System.Web;
using System.Security.Permissions;
namespace Samples.AspNet.CS.Controls
{
[AspNetHostingPermission(SecurityAction.Demand, Level=AspNetHostingPermissionLevel.Minimal)]
public sealed class CustomRepeaterDataBind : System.Web.UI.WebControls.Repeater
{
public override void DataBind()
{
// Raise the DataBinding event.
this.OnDataBinding(System.EventArgs.Empty);
}
}
}
Imports System.Web
Imports System.Security.Permissions
Namespace Samples.AspNet.VB.Controls
<AspNetHostingPermission(SecurityAction.Demand, Level:=AspNetHostingPermissionLevel.Minimal)> _
Public NotInheritable Class CustomRepeaterDataBind
Inherits System.Web.UI.WebControls.Repeater
Public Overrides Sub DataBind()
' Raise the DataBinding event.
Me.OnDataBinding(System.EventArgs.Empty)
End Sub
End Class
End Namespace
Remarks
Use the DataBind method to bind the data source specified by the DataSource property to the Repeater control. When you bind a data source to the Repeater control, the information in the data source is displayed in the control.
The DataBind method is also commonly used to synchronize the data source and a data listing control after information in the data source is updated. This allows any changes in the data source to also be updated in a data listing control.
If the data source for the Repeater control is specified by the DataSourceID property, you do not need to explicitly call the DataBind method. ASP.NET calls this method automatically to bind the specified data source control to the Repeater control.
