C#数据库连接（数据源控件）

web.config

  
    <connectionStrings>
　　<add name="i05ConnectionString1" 
　　connectionString="Data Source=localhost;Initial Catalog=i05;Integrated Security=True"
　　providerName="System.Data.SqlClient" />
　　<add name="i05ConnectionString2" 
　　connectionString="Data Source=aidd2008;Initial Catalog=i05;User ID=i05;Password=i05630229"
　　providerName="System.Data.SqlClient" />
</connectionStrings>

 

 aspx

   
     <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="cno"
DataSourceID="SqlDataSource1">
　　<Columns>
　　　　<asp:BoundField DataField="cno" HeaderText="cno" ReadOnly="True" SortExpression="cno" />
　　　　<asp:BoundField DataField="cname" HeaderText="cname" SortExpression="cname" />
　　　　<asp:BoundField DataField="ccredit" HeaderText="ccredit" SortExpression="ccredit" />
　　</Columns>
</asp:GridView>
<asp:SqlDataSource ID="SqlDataSource1" runat="server" 
ConnectionString="<%$ ConnectionStrings:i05ConnectionString2 %>"
SelectCommand="SELECT * FROM [course]">
</asp:SqlDataSource>