Cannot find control in EditTemplate via OnRowEditing event - asp.net

Question

I have a GridView like so:
<asp:GridView runat="server" ID="grdPractices" PageSize="10" AutoGenerateColumns="False" DataKeyNames="Id"
CssClass="linkGrid" AllowSorting="True" OnSorting="grdPractices_OnSorting" OnRowDataBound="grdPractices_OnRowDataBound"
OnRowEditing="grdPractices_OnRowEditing" OnRowCancelingEdit="grdPractices_OnRowCancelingEdit" OnRowUpdating="grdPractices_OnRowUpdating">
<Columns>
<asp:BoundField DataField="Name" HeaderText="Name" meta:resourcekey="PracticeName" ReadOnly="True" SortExpression="Name" ItemStyle-Width="400px" />
<asp:BoundField DataField="Code" HeaderText="Code" meta:resourcekey="Code" ReadOnly="True" SortExpression="Code" ItemStyle-Width="200px" />
<asp:TemplateField meta:resourcekey="SiteName" ItemStyle-Width="200px" SortExpression="SiteName">
<ItemTemplate>
<asp:Literal runat="server" Text='<%# Eval("SiteName") %>' />
</ItemTemplate>
<EditItemTemplate>
<asp:DropDownList runat="server" ID="lstSites" />
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField meta:resourcekey="NumOfUsers" ItemStyle-Width="200px" SortExpression="NumOfUsers">
<ItemTemplate>
<asp:LinkButton runat="server" OnCommand="OnLinkButtonCommand" CommandName="ViewUsers" Text='<%# Eval("NumOfUsers") %>' />
</ItemTemplate>
</asp:TemplateField>
<asp:CommandField ShowDeleteButton="False" ShowCancelButton="True"
ShowInsertButton="False" ShowEditButton="True" EditText="Edit"
CancelText="Cancel" UpdateText="Update" meta:resourcekey="Edit" ItemStyle-Width="200px" />
</Columns>
</asp:GridView>
and here is the code for the OnRowEditing event:
protected void grdPractices_OnRowEditing(object sender, GridViewEditEventArgs e)
{
this.grdPractices.EditIndex = e.NewEditIndex;
var sitesDropDown = this.grdPractices.Rows[e.NewEditIndex].Controls[0].FindControl("lstSites") as DropDownList;
if (sitesDropDown == null)
{
return;
}
}
My problem is that I cannot get a hold of the lstSites control, which lives in the EditTemplate. I've tried using the following:
this.grdPractices.Rows[e.NewEditIndex].Controls[0].FindControl("lstSites")
as DropDownList;
this.grdPractices.Rows[e.NewEditIndex].FindControl("lstSites") as
DropDownList;
this.grdPractices.Rows[e.NewEditIndex].FindControlRecursive("lstSites")
as DropDownList;
The result is always the same, a NULL is returned.
How on earth are you supposed to get a control in a row when in the OnRowEditing event?

Answer 1

OK, what I was not doing, after this line:
this.grdPractices.EditIndex = e.NewEditIndex;
was then rebinding the grid's data. So after rebinding the data, and then calling:
var sitesDropDown = this.grdPractices.Rows[e.NewEditIndex].FindControlRecursive("lstSites") as DropDownList;
I am now able to interact with the siteDropDown variable since it now contains a reference to the lstSites control.

Answer 2

Try to use GridViewRow as following...
protected void grd_RowEditing(object sender, GridViewEditEventArgs e)
{
GridViewRow selectRow = grd.Rows(e.NewEditIndex);
DropDownList sitesDropDown =(DropDownList)selectRow.Cells[2].FindControl("lstSites");
}