ASP.NET

  <cc1:reorderlist id="ReorderList1" runat="server" xmlns:cc1="#unknown">
                  AllowReorder="True"
                  DataSourceID="AsaSource"
                  PostBackOnReorder="false"
                  DataKeyField="id"
                  ItemInsertLocation="end"
                  SortOrderField="disporder"
                  ShowInsertItem="true" OnCancelCommand="ReorderList1_CancelCommand" OnEditCommand="ReorderList1_EditCommand" OnUpdateCommand="ReorderList1_UpdateCommand">
     <itemtemplate>
         <asp:textbox id="TextBox1" runat="server" text="<%# Eval( "name" ) %>" readonly="true" xmlns:asp="#unknown" />
         <asp:linkbutton id="LinkButton1" runat="server" text="Edit" commandname="Edit" causesvalidation="false" xmlns:asp="#unknown" />
         <asp:linkbutton id="LinkButton2" runat="server" text="Delete" commandname="Delete" causesvalidation="false" xmlns:asp="#unknown" />
     </itemtemplate>
     <edititemtemplate>
         <asp:textbox id="TextBox2" runat="server" text="<%# Bind( "Name" ) %>" xmlns:asp="#unknown" />
         <asp:linkbutton id="LinkButton3" runat="server" text="Update" commandname="Update" xmlns:asp="#unknown" />
         <asp:linkbutton id="LinkButton4" runat="server" text="Cancel" commandname="Cancel" causesvalidation="false" xmlns:asp="#unknown" />
     </edititemtemplate>
     <insertitemtemplate>
         <asp:textbox id="TextBox3" runat="server" text="<%# Bind( "Name" ) %>" xmlns:asp="#unknown" />
         <asp:linkbutton id="LinkButton3" runat="server" text="Add" commandname="Insert" xmlns:asp="#unknown" />
         <asp:requiredfieldvalidator id="RequiredFieldValidator1" runat="server" controltovalidate="TextBox3" errormessage="Enter a value." xmlns:asp="#unknown" />
     </insertitemtemplate>
     <draghandletemplate>
         <asp:image id="Image1" runat="server" imageurl="~/fire.bmp" xmlns:asp="#unknown" />
     </draghandletemplate>
</cc1:reorderlist>
 <asp:sqldatasource id="AsaSource" runat="server" xmlns:asp="#unknown">
                    ConnectionString="<%$ ConnectionStrings:ConnectionString2 %>"
                    ProviderName="<%$ ConnectionStrings:ConnectionString2.ProviderName %>"
                    SelectCommand="SELECT [name], [disporder], [id] FROM [ajaxtest] ORDER BY [disporder]"
                    UpdateCommand="UPDATE ajaxtest SET name = ?, disporder = ? WHERE id = ?"
                    DeleteCommand="DELETE FROM ajaxtest WHERE id = ?"
                    InsertCommand="INSERT INTO ajaxtest (name, disporder) VALUES (?, ?)">
     <updateparameters>
         <asp:parameter name="name" type="String" />
         <asp:parameter name="disporder" type="Int32" />
         <asp:parameter name="id" type="Int32" />
     </updateparameters>
     <deleteparameters>
         <asp:parameter name="id" type="Int32" />
     </deleteparameters>
     <insertparameters>
         <asp:parameter name="name" type="String" />
         <asp:parameter name="disporder" type="Int32" />
     </insertparameters>
 </asp:sqldatasource>

protected void gvRegisters_RowEditing(object sender, GridViewEditEventArgs e)
    {
        this.gvRegisters.EditIndex = e.NewEditIndex;
        this.SetErrorMessage("Record opened for editing", ErrorClass.Info);
        
        //It always returns Null
        DropDownList ddlCompany = ((DropDownList)gvRegisters.Rows[e.NewEditIndex].FindControl("ddlCompany"));
        DropDownList ddlBranch = ((DropDownList)gvRegisters.Rows[e.NewEditIndex].FindControl("ddlBranch"));
        DropDownList ddlDepartment = ((DropDownList)gvRegisters.Rows[e.NewEditIndex].FindControl("ddlDepartment"));

        //Fills the DropdownBoxes in the EditItemTemplate
        FillLocationDropDowns(ddlCompany, ddlBranch, ddlDepartment);
    }