Repeater.OnDataBinding(EventArgs) 方法
定義
重要
部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。
引發 DataBinding 事件。
protected:
override void OnDataBinding(EventArgs ^ e);protected override void OnDataBinding (EventArgs e);override this.OnDataBinding : EventArgs -> unitProtected Overrides Sub OnDataBinding (e As EventArgs)參數
範例
下列程式碼範例示範如何在自訂伺服器控制項中覆寫 OnDataBinding 方法，讓如果事件引數是命令類型， Repeater 控制項一律會呼叫 OnItemCommand 並反升事件，或傳回 false 並取消事件。
<%@ 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
