<body> <form id="form1" runat="server"> <div> <asp:DropDownList ID="DropDownList1" runat="server" AutoPostBack="True" DataSourceID="SqlDataSource1" DataTextField="FirstName" DataValueField="CustID"> </asp:DropDownList> </div> <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:AutoLotConnectionString %>" SelectCommand="SELECT [FirstName], [CustID] FROM [Customers]"> </asp:SqlDataSource> <asp:SqlDataSource ID="SqlDataSource2" runat="server" ConnectionString="<%$ ConnectionStrings:AutoLotConnectionString %>" SelectCommand="SELECT * FROM [Customers] WHERE ([CustID] = @CustID)"> <SelectParameters> <asp:ControlParameter ControlID="DropDownList1" Name="CustID" PropertyName="SelectedValue" Type="Int32" /> </SelectParameters> </asp:SqlDataSource> <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="4" DataKeyNames="CustID" DataSourceID="SqlDataSource2" ForeColor="#333333" GridLines="None"> <AlternatingRowStyle BackColor="White" ForeColor="#284775" /> <Columns> <asp:BoundField DataField="CustID" HeaderText="CustID" ReadOnly="True" SortExpression="CustID" /> <asp:BoundField DataField="FirstName" HeaderText="FirstName" SortExpression="FirstName" /> <asp:BoundField DataField="LastName" HeaderText="LastName" SortExpression="LastName" /> </Columns> <EditRowStyle BackColor="#999999" /> <FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" /> <HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" /> <PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" /> <RowStyle BackColor="#F7F6F3" ForeColor="#333333" /> <SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" /> <SortedAscendingCellStyle BackColor="#E9E7E2" /> <SortedAscendingHeaderStyle BackColor="#506C8C" /> <SortedDescendingCellStyle BackColor="#FFFDF8" /> <SortedDescendingHeaderStyle BackColor="#6F8DAE" /> </asp:GridView> </form> </body>