Selecting Data
<%@ Page Language="C#" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <body> <form id="form1" runat="server"> <div> <asp:GridView id="grdProductCategories" DataKeyNames="Id" DataSourceID="srcProductCategories" AutoGenerateSelectButton="true" SelectedRowStyle-CssClass="selectedRow" Runat="server" /> <asp:GridView id="grdProducts" DataSourceID="srcProducts" Runat="server" /> <asp:SqlDataSource id="srcProductCategories" ConnectionString="<%$ ConnectionStrings:Products %>" SelectCommand="SELECT Id, Name FROM ProductCategories" Runat="server" /> <asp:SqlDataSource id="srcProducts" ConnectionString="<%$ ConnectionStrings:Products %>" SelectCommand="SELECT Title,Director FROM Products WHERE CategoryId=@CategoryId" Runat="server"> <SelectParameters> <asp:ControlParameter Name="CategoryId" ControlID="grdProductCategories" PropertyName="SelectedValue" /> </SelectParameters> </asp:SqlDataSource> </div> </form> </body> </html> File: Web.config <configuration> <connectionStrings> <add name="Products" connectionString="Data Source=.\SQLEXPRESS; AttachDbFilename=|DataDirectory|MyDatabase.mdf;Integrated Security=True;User Instance=True" /> </connectionStrings> </configuration>