关于RepeaterCommandEventargs的问题．

nnh 2006-03-18 10:57:34

在学asp.net技术内幕这本书，有个例子中的一条语句不是很明白，请大家帮忙看看．

代码:
<%@ Page Language="VB" Debug="true" %>
<%@ Import Namespace="System.Data.SqlClient" %>

<Script Runat="Server">

Sub Page_Load
If Not IsPostBack Then
Dim conNorthwind As SqlConnection
Dim cmdSelect As SqlCommand
Dim dtrCategories As SqlDataReader

conNorthwind = New SqlConnection( "Server=localhost;UID=sa;PWD=;Database=Northwind" )
cmdSelect = New SqlCommand( "Select CategoryName From Categories", conNorthwind )
conNorthwind.Open()
dtrCategories = cmdSelect.ExecuteReader()

rptCategories.DataSource = dtrCategories
rptCategories.DataBind()

dtrCategories.Close()
conNorthwind.Close()
End If
End Sub

Sub Button_Click( s As Object, e As RepeaterCommandEventArgs )
Dim lbtnSelected As LinkButton

lbtnSelected = e.Item.Controls( 1 )
lblCategory.Text = "You selected " & lbtnSelected.Text
End Sub

</Script>

<html>
<head><title>LinkButtonList.aspx</title></head>
<body>
<form Runat="Server">

<asp:Repeater
ID="rptCategories"
OnItemCommand="Button_Click"
Runat="Server">

<ItemTemplate>
<li>
<asp:LinkButton
Text='<%# Container.DataItem( "CategoryName" ) %>'
Runat="Server" />
</ItemTemplate>

<ItemTemplate>
<li>
<asp:LinkButton
Text='<%# Container.DataItem( "CategoryName" ) %>'
Runat="Server" />
</ItemTemplate>
</asp:Repeater>

<p>
<asp:Label
ID="lblCategory"
Runat="Server" />

</form>
</body>
</html>
========================

其中的 lbtnSelected = e.Item.Controls( 1 ) ,为什么要用 1 呢？请大家帮忙解释一下，谢谢．

...全文

206 3 打赏收藏转发到动态举报

写回复

用AI写文章

3 条回复

切换为时间正序

请发表友善的回复…

发表回复

nnh 2006-03-20

打赏
举报

大家帮帮忙呀.谢谢.

nnh 2006-03-18

打赏
举报

上边的代码
<ItemTemplate>
<li>
<asp:LinkButton
Text='<%# Container.DataItem( "CategoryName" ) %>'
Runat="Server" />
</ItemTemplate>

<ItemTemplate>
<li>
<asp:LinkButton
Text='<%# Container.DataItem( "CategoryName" ) %>'
Runat="Server" />
</ItemTemplate>

源代码只有一个LinkButton，现在我另加上了相同一个LinkButton．前边没注意看．