I have a datagridview (bound to a DataTable) that has a combobox column (bound to bindingsource). Inserting data is not a problem. The problem occurs when I edit a row the datagridview throws an exception "datagridviewcomboboxcell value is not valid". The DGV combobox turns blank afterwards.
I posted this code to the DGV DataError Event to find the exact error:
I got this error "Error happened formatting, Display" and after I click ok I get this error "Error happened formatting, preferred Size".
I'm stuck. Can't figure out what I am doing wrong?
I posted this code to the DGV DataError Event to find the exact error:
Code:
If (e.Context = DataGridViewDataErrorContexts.Commit) Then
MessageBox.Show("Commit error")
End If
If (e.Context = DataGridViewDataErrorContexts.CurrentCellChange) Then
MessageBox.Show("Cell change")
End If
If (e.Context = DataGridViewDataErrorContexts.Parsing) Then
MessageBox.Show("parsing error")
End If
If (e.Context = DataGridViewDataErrorContexts.LeaveControl) Then
MessageBox.Show("leave control error")
End If
If (TypeOf (e.Exception) Is ConstraintException) Then
Dim view As DataGridView = CType(sender, DataGridView)
view.Rows(e.RowIndex).ErrorText = "an error"
view.Rows(e.RowIndex).Cells(e.ColumnIndex).ErrorText = "an error"
e.ThrowException = False
End IfI'm stuck. Can't figure out what I am doing wrong?