Finding Control inside RadGrid FormTemplate

[ABC]

Let' say I have this grid,

<telerik:RadGrid
    ...........................
    ...........................
    <FormTemplate>
            <asp:TextBox ID="txtDescription" runat="server" />
    </FormTemplate>
    ...........................
    ...........................
    ...........................

Now In code behind I need txtDescription inside DataSource1_Updating event,

    protected void DataSource1_Updating(object sender, SqlDataSourceCommandEventArgs e){

Is this is possible?

[ABC]

Here is how I fixed this issue. Defined a EditCommand,

        protected void RadGrid1_EditCommand(object sender, GridCommandEventArgs e)
        {
            ViewState["CurrentIndex"] = e.Item.ItemIndex;
        }

and in my event,

    protected void DataSource1_Updating(object sender, SqlDataSourceCommandEventArgs e){

            var currentIndex = (int)ViewState["CurrentIndex"];
            var form = RadGrid1.Items[currentIndex].EditFormItem;
            var txtDescription= form.FindControl("txtDescription") as RadComboBox;