Gridview code will not work... please help

[Nick]

Hi,

Can anyone take a look at the code below and suggest why it may not be
working

---------------------------------
Dim test As ImageButton
test = CType(e.Row.Cells(1).FindControl("ButtonField"), ImageButton)
test.ImageUrl = "~/status_failed.gif"
---------------------------------


I'm doing this when DataBound for the Gridview section.

I get, Object not set to an instance of an object.


So it looks like it can't find the object? I've tried changing the code so
many times and it fails to work.

I've spent weeks on this code. any idea's?


Cheers,

Nick

 

[Darren Kopp]

e.Item.FindControl("ButtonField") or
e.Item.Cells(1).FindControl("ButtonField") should work.

HTH,
Darren Kopp
http://blog.secudocs.com/

 

[Nick]

Hi Darren,

Still dosen't seem to work, their is no e.item for some reason. I only have
e.row ?

Cheers,

Nick

 

[Darren Kopp]

My bad, i was thinking datagrid for some reason. Use the code you
originally had, but call it for the RowDataBound event, rather than the
DataBound event.

-Darren Kopp
http://blog.secudocs.com/

 

[Darren Kopp]

You can reference
http://msdn2.microsoft.com/en-us/library/system.web.ui.webcontrols.gridview.rowdatabound.aspx
for more information.

-Darren
http://blog.secudocs.com/

 

[Nick]

Hi Darren,

Thanks for all your help.. but I still can't get this working.

I have tried:

Dim myControl1 As Control = FindControl("ImageButton")
If (Not myControl1 Is Nothing) Then
' Get control's parent.
Dim myControl2 As Control = myControl1.Parent
Response.Write("Parent of the text box is : " & myControl2.ID)
Else
Response.Write("Control not found.....")
End If

Just to see if it actually locates the control and it still won't work.

Any idea's?

Cheers,

Nick

 

[Nick]

ah,

I have fixed it!!

Protected Sub GridView1_Load(ByVal sender As Object, ByVal e As
System.EventArgs) Handles GridView1.Load
Dim rowCollection As GridViewRowCollection = GridView1.Rows
For Each gridRow As GridViewRow In rowCollection
Dim rowCell As TableCellCollection = gridRow.Cells
For Each itemCell As TableCell In rowCell
For Each ctl As Control In itemCell.Controls
If TypeOf ctl Is ImageButton Then
Dim chk As ImageButton = CType(ctl, ImageButton)
chk.ImageUrl = "~/status_failed.gif"
End If
Next
Next
Next
End Sub

Thank you so much for your help Darren. You pointed me in thr right
direction.

Cheers!

Nick