DataGrid.FindControl() returns nothing

[MattB]

I've got some controls (mostly textboxes for now) that get created at
runtime in a DataGrid. I create them using the OnItemDataBound event. I
realize this isn't ideal, but I'm trying to see if I can make this work
anyway.

In a button click event I loop through the dataset the datagrid is bound
to and try to use FindControl to get at my controls. Below is a snippet
from the button click event:

iRow = 0
For Each dr In dtGfields.Rows
strCol = dr("ColName")
theCell = dgGuest.Items(iRow).Cells(1)
Select Case strCol
...
Case Else
tb = theCell.Controls(0)
'dgGuest.FindControl(strCol)
If UCase(dr("val")) <> UCase(tb.Text) Then
xml = wwSales.EZTag(strCol, UCase(tb.Text))
End If
End Select
...
iRow += 1
Next

I've tried a bunch of different approaches with FindControl but I always
wind up with a return value of Nothing. Can anyone see anything here
that I'm doing wrong? I initially started out with using it like this:

tb = dgGuest.FindControl(strCol)

TIA!
Matt

 

[Wilco Bauwer]

FindControl will only search for a control with the specified ID within
the naming container of the control on which you called FindControl.
You will have to narrow the search by getting to the container of the
control you are looking for first.

 

[Scott Allen]

Hi Matt:

You'll want to call FindControl on the rows of the DataGrid and not
the DataGrid itself. A DataGrid row is a DataGridItem.

I have some samples in C# here:
http://odetocode.com/Articles/116.aspx