ASP.NET 数据库连接字的使用
数据库连接字可以放在web.config配置文件中：
<connectionStrings>
<add name="myNorthWind"
providerName="System.Data.SqlClient"
connectionString="server=.;database=NorthWind;Integrated Security=SSPI" />
</connectionStrings>
测试程序如下：
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default.aspx.vb" Inherits="_Default" %>
<!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 id="Head1" runat="server">
<title>ASP.NET 数据库连接字的使用</title>
</head>
<body>
<form id="form1" runat="server">
<asp:SqlDataSource
id="SqlDataSource1"
runat="server"
DataSourceMode="DataReader"
ConnectionString="<%$ ConnectionStrings:myNorthWind %>"
SelectCommand="SELECT LastName FROM Employees">
</asp:SqlDataSource>
<asp:ListBox
id="ListBox1"
runat="server"
DataTextField="LastName"
DataSourceID="SqlDataSource1">
</asp:ListBox>
</form>
</body>
</html>
