sample1.aspx

<h3>Courses Taught</h3>
<asp:ObjectDataSource ID="CoursesObjectDataSource" runat="server" TypeName="ContosoUniversity.BLL.SchoolBL"
    DataObjectTypeName="ContosoUniversity.DAL.Course" SelectMethod="GetCoursesByInstructor">
    <SelectParameters>
        <asp:ControlParameter ControlID="InstructorsGridView" Name="PersonID" PropertyName="SelectedDataKey.Value"
            Type="Int32" />
    </SelectParameters>
</asp:ObjectDataSource>
<asp:GridView ID="CoursesGridView" runat="server" DataSourceID="CoursesObjectDataSource"
    AllowSorting="True" AutoGenerateColumns="False" SelectedRowStyle-BackColor="LightGray"
    DataKeyNames="CourseID">
    <EmptyDataTemplate>
        <p>No courses found.</p>
    </EmptyDataTemplate>
    <Columns>
        <asp:BoundField DataField="CourseID" HeaderText="ID" ReadOnly="True" SortExpression="CourseID" />
        <asp:BoundField DataField="Title" HeaderText="Title" SortExpression="Title" />
        <asp:TemplateField HeaderText="Department" SortExpression="DepartmentID">
            <ItemTemplate>
                <asp:Label ID="GridViewDepartmentLabel" runat="server" Text='<%# Eval("Department.Name") %>'></asp:Label>
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>