GridView模板列示范代码

  //页面源代码
        <form id="form1" runat="server">
    <div style="text-align: center">
        <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="4" ForeColor="#333333" GridLines="None" DataSourceID="EmployeeList">
            <Columns>
                <asp:CommandField ShowSelectButton="True" />
                <asp:CommandField ShowEditButton="True" />
                <asp:CommandField ShowDeleteButton="True" />
                <asp:BoundField DataField="EmployeeID" HeaderText="雇员ID号" />
                <asp:BoundField DataField="Name" HeaderText="雇员姓名" />
                <asp:TemplateField HeaderText="BirthDate出生日期" SortExpression="BirthDate">
                    <EditItemTemplate>
                        <asp:Calendar ID="Calendar1" runat="server" BackColor="#FFFFCC" BorderColor="#FFCC66"
                            BorderWidth="1px" DayNameFormat="Shortest" Font-Names="Verdana" Font-Size="8pt"
                            ForeColor="#663399" Height="200px" SelectedDate='<%# Bind("BirthDate") %>' ShowGridLines="True"
                            VisibleDate='<%# Eval("BirthDate") %>' Width="220px">
                            <SelectedDayStyle BackColor="#CCCCFF" Font-Bold="True" />
                            <TodayDayStyle BackColor="#FFCC66" ForeColor="White" />
                            <SelectorStyle BackColor="#FFCC66" />
                            <OtherMonthDayStyle ForeColor="#CC9966" />
                            <NextPrevStyle Font-Size="9pt" ForeColor="#FFFFCC" />
                            <DayHeaderStyle BackColor="#FFCC66" Font-Bold="True" Height="1px" />
                            <TitleStyle BackColor="#990000" Font-Bold="True" Font-Size="9pt" ForeColor="#FFFFCC" />
                        </asp:Calendar>
                    </EditItemTemplate>
                    <ItemTemplate>
                        <asp:Label ID="Label2" runat="server" Text='<%# Bind("BirthDate", "{0:d}") %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="上司">
                    <EditItemTemplate>
                        <asp:DropDownList ID="DropDownList1" runat="server" DataSourceID="ReportsToList"
                            DataTextField="Name" DataValueField="EmployeeID" SelectedValue='<%# Bind("Commander") %>'>
                        </asp:DropDownList>&nbsp;
                    </EditItemTemplate>
                    <ItemTemplate>
                        <asp:Label ID="Label1" runat="server" Text='<%# GetReportsToName(Eval("Commander")) %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
            </Columns>
            <FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
            <RowStyle BackColor="#F7F6F3" ForeColor="#333333" />
            <EditRowStyle BackColor="#999999" />
            <SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />
            <PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />
            <HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
            <AlternatingRowStyle BackColor="White" ForeColor="#284775" />
        </asp:GridView>
    
    </div>
        <asp:SqlDataSource ID="EmployeeList" runat="server" ConnectionString="<%$ ConnectionStrings:NorthwindConnectionString %>"
            SelectCommand="SELECT EmployeeID, LastName + ',' + FirstName AS Name, BirthDate, ReportsTo AS Commander FROM Employees">
        </asp:SqlDataSource>
        <asp:SqlDataSource ID="ReportsToList" runat="server" ConnectionString="<%$ ConnectionStrings:NorthwindConnectionString %>"
            SelectCommand="Select EmployeeID,LastName+','+FirstName as Name From Employees Union Select Null,'无' Order by Name ASC">
        </asp:SqlDataSource>
    </form>

  //绑定第一个模板列的Label1控件，将EmployeeID转换为姓名
     public string GetReportsToName(object reportsToId)
    }