前台调用后台方法

<asp:GridView ID="GridView1" runat="server" AllowPaging="True"
                    AutoGenerateColumns="False" DataKeyNames="ID"
                    EnableModelValidation="True" Width="589px" PageSize="5" onpageindexchanging="GridView1_PageIndexChanging"
                    >
                    <Columns>
                        <asp:BoundField DataField="ID" HeaderText="ID" InsertVisible="False"
                            ReadOnly="True" SortExpression="ID">
                        <FooterStyle CssClass="hidden" />
                        <HeaderStyle CssClass="hidden" />
                        <ItemStyle CssClass="hidden" />
                        </asp:BoundField>
                        <asp:TemplateField HeaderText="选择">
                            <ItemTemplate>
                                <asp:CheckBox ID="CheckBox1" runat="server" />
                            </ItemTemplate>
                        </asp:TemplateField>
                        <asp:BoundField DataField="C_Name" HeaderText="C_Name"
                            SortExpression="C_Name" />
                        <asp:BoundField DataField="C_Assistant" HeaderText="C_Assistant"
                            SortExpression="C_Assistant" />
                        <asp:BoundField DataField="C_CollegeName" HeaderText="C_CollegeName"
                            SortExpression="C_CollegeName" />
                        <asp:BoundField DataField="C_MajorName" HeaderText="C_MajorName"
                            SortExpression="C_MajorName" />
                        <asp:TemplateField HeaderText="编辑">
                       
                            <ItemTemplate>
                                <%#editIt(Convert.ToInt32(DataBinder.Eval(Container.DataItem, "ID")))%>
                            </ItemTemplate>
                       
                        </asp:TemplateField>
                    </Columns>
                    <PagerSettings Visible="False" />
                </asp:GridView>

public string editIt(int id)

{

string url="...aspx?ID="+id

return url;}