DaniWeb IT Discussion Community - View Single Post

Re: Checkbox in Datagridview

Dec 17th, 2008

Are you adding checkboxes to datagrid at runtime?

 Help with Code Tags 
 VB.NET Syntax (Toggle Plain Text) 
Dim chk As New DataGridViewCheckBoxCell
 
If condition Then
  chk.Value = True
Else
  chk.Value = False
End If
' Add checkbox control to datagrid
DataGridView1.Item(0, 0) = chk
Dim chk As New DataGridViewCheckBoxCell

If condition Then
  chk.Value = True
Else
  chk.Value = False
End If
' Add checkbox control to datagrid
DataGridView1.Item(0, 0) = chk

If not, then

 Help with Code Tags 
 VB.NET Syntax (Toggle Plain Text) 
If condition Then
  DataGridView1.Item(0, 0).Value = True
Else
  DataGridView1.Item(0, 0).Value = False
End If
If condition Then
  DataGridView1.Item(0, 0).Value = True
Else
  DataGridView1.Item(0, 0).Value = False
End If

"object reference not set"-error comes from declaring an object dim chk as checkbox but not creating the instance, like dim chk as New checkbox

Teme64 @ Windows Developer Blog