Listview and SQLDataSource render nothing
I've never used either of these 2 controls before and I'm stuck with no visible rendering of the page (compiles and runs but produces nothing); I have no code behind file with this simple asp.net page and I am using Visual Studio 2008:
<%@ Page Language="C#" AutoEventWireup="true"
CodeBehind="Index.aspx.cs" Inherits="zList.Index" %>
<!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 runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:ListView ID="CategoryList" runat="server"
DataSourceID="Catego开发者_JAVA百科ries">
<LayoutTemplate>
<ol>
<asp:PlaceHolder runat="server" ID="itemPlaceholder">
</asp:PlaceHolder>
</ol>
</LayoutTemplate>
<ItemTemplate>
<li><%# Eval("AttrDesc")%></li>
</ItemTemplate>
</asp:ListView>
</div>
</form>
</body>
</html>
<asp:sqldatasource runat="server" id="Categories"
ConnectionString="<%$ ConnectionStrings:ZIPeeeConnectionString2 %>"
SelectCommand="SELECT AttrID,AttrDesc FROM dbo.tblAttributes1">
</asp:sqldatasource>
Here is the connection string section from web.config (I have tried both connection strings separately and they both result in nothing rendered):
<connectionStrings>
<add name="ZIPeeeConnectionString" connectionString="Data Source=MOJITO;Initial Catalog=ZIPeee;Integrated Security=True" providerName="System.Data.SqlClient"/>
<add name="ZIPeeeConnectionString2" connectionString="Data Source=MOJITO;Initial Catalog=ZIPeee;User ID=sa;Password=" providerName="System.Data.SqlClient"/>
</connectionStrings>
I am getting no runtime errors and no errors during the build. The simple query works fine from SQL Query Analyzer (i.e. SQL Server 2000). Any ideas?
EDIT-UPDATE: Here is what I have in my .ASPX.CS code behind file and I cannot get the debugger to stop on the breakpoint on the .DataBind method:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace zList
{
public partial class Index : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
CategoryList.DataBind(); // breakpoint set here but debugger won't stop here
}
}
}
By the way, I fired up SQL Profiler and it appears the SQL select is not even being fired against the server. As I said, the page is empty - just this junk when I scrape it via View Page Source:
<!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></title></head>
<body>
<form name="form1" method="post" action="Index.aspx" id="form1">
<div>
<input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="/wEPDwUKMjAyMTkwMzQ3OQ9kFgQCAw9kFgICAQ8UKwACDxYEHgtfIURhdGFCb3VuZGceC18hSXRlbUNvdW50Av////8PZGRkAgUPD2QPEBYDZgIBAgIWAxYCHg5QYXJhbWV0ZXJWYWx1ZWQWAh8CZBYCHwJkFgMCAwIDAgNkZBgBBQxDYXRlZ29yeUxpc3QPZ2TCuhjvuwDRjaGJssTwiDXpAv/fdw==" />
</div>
<div>
</div>
</form>
</body>
</html>
I think the only thing wrong with this code is the placement of the sqldatasource. Can you place it inside the tag.
If that doesnt work, can you change your listview definition to
<asp:ListView ID="CategoryList" runat="server">
and then change your page load code to
CategoryList.DataSource = Categories;
CategoryList.DataBind();
You should be able to hit the debugger
As a last option, can you also check whether the connectionstrings is placed within the Configuration tag in web.config.
加载中,请稍侯......
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