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Listing 11.22 - Master.aspx

Illustrates how to use a QueryStringField field to create a master/detail form.

Listing 11.22 - Master.aspx (C#)
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<%@ Page Language="C#" %>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
    <title>Master</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    
    <asp:GridView
        id="grdMovieCategories"
        DataSourceID="srcMovieCategories"
        AutoGenerateColumns="false"
        Runat="server">
        <Columns>
        <asp:HyperLinkField
            HeaderText="Movie Categories"
            DataTextField="Name"
            DataNavigateUrlFields="Id"
            DataNavigateUrlFormatString="Details.aspx?id={0}" />
        </Columns>
    </asp:GridView>    
    
    <asp:SqlDataSource
        id="srcMovieCategories"
        ConnectionString="<%$ ConnectionStrings:Movies %>"
        SelectCommand="SELECT Id, Name FROM MovieCategories"
        Runat="server" />
    
    </div>
    </form>
</body>
</html>

The master page above links to the following details page.

Listing 11.23 - Details.aspx (C#)
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<%@ 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" >
<head id="Head1" runat="server">
    <title>Details</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    
    <asp:GridView
        id="grdMovies"
        DataSourceID="srcMovies"
        Runat="server" />
    
    <asp:SqlDataSource
        id="srcMovies"
        ConnectionString="<%$ ConnectionStrings:Movies %>"
        SelectCommand="SELECT Title,Director FROM Movies
            WHERE CategoryId=@CategoryId"
        Runat="server">
        <SelectParameters>
        <asp:QueryStringParameter
            Name="CategoryId"
            QueryStringField="id" />
        </SelectParameters>
    </asp:SqlDataSource>    
    
    </div>
    </form>
</body>
</html>