how to get value from nested Dropdownlist in Gridview for gridview.column .cell (x)

[minhtran]

Hi everyone
I have a problem when I want to edit the value from nested dropdownlist in Gridview, Please, anyone can help me to solve this problem, a great appreciation from me in advance.
here is my sample code ASP.NET with VB.NET
Protected Sub gridview5_rowda tabound(ByVal sender As Object, ByVal e As System.Web.UI.W ebControls.Grid ViewRowEventArg s) Handles GridView5.RowDa taBound
Dim Columns() As String
Dim myDataset As New DataSet()
Dim i As Integer = 0
Dim x As Integer = 0
Dim strSuburb As String
For i = 0 To GridView5.Colum ns.Count
strSuburb = (Trim(GridView5 .Columns(i).ToS tring()))
strSuburb = strSuburb.ToUpp er()
If (strSuburb = "SUBURB") Then

Exit For
End If

Next
If e.Row.RowType = DataControlRowT ype.DataRow Then

Dim Ourddl As DropDownList = CType(e.Row.Fin dControl("dropd ownlist3"), DropDownList)
Columns = myValidation.Re turnMoreThanOne SuburbSelect(st rServer, strUsername, strPassword, Trim(e.Row.Cell s(1).Text), Trim(e.Row.Cell s(2).Text))
Ourddl.DataSour ce = Columns
Ourddl.ForeColo r = Drawing.Color.R ed
Ourddl.DataBind ()
AddHandler Ourddl.Selected IndexChanged, AddressOf Ourddl_Selected IndexChanged
Columns = myNewColumn.Spl it(",")
For x = 0 To Columns.Length - 1
strSuburb = (Trim(Columns(x ).ToString()))
strSuburb = strSuburb.ToUpp er()
If (strSuburb = "SUBURB") Then

Exit For

End If
Next

e.Row.Cells(i + x + 2).Controls.Add (Ourddl)
End If


End Sub