currentcellvalidating and unxpected messagebox problem.

[Philip Bishop]

While testing our app today I found a problem I cant track down. Run the attached sample. Click cell 1,1 once and then hold down the number 9 key until it maxes out the field with five 9''s. Now instead of clicking off or arrowing off the cell, hit f2 whiles its still in active edit mode. This will then give you my error message which is correct. Now if you click ok on my error message another message box shows up that has no message and only and ok button. It only does this when pressing f2. I just happened upon this on accident as one user likes using f2 to get in to edit mode rather then clicking the cell. Where is that message coming from and how can I stop it and why is it happening? Thanks in advance Phil

validation.zip

[Administrator]

Hi Philip,

The grid uses F2 Key to toggle between a cell in and out of edit mode. This might be interfering with your use of F2 Key.

If you want to resolve this issue, try handling the F2 key in KeyDown event, and avoid the e.Cancel = true in the grid''s CurrentCellValidating event. Here is a code snippet.

Dim IsF2Pressed As Boolean = False

Private Sub grdAGCY_ACCR_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles grdAGCY_ACCR.KeyDown
If e.KeyData = Keys.F2 Then
IsF2Pressed = True
Console.WriteLine(e.KeyData & "::::" & e.KeyValue)
End If
End Sub

''''''InCurrentcell validating event of the grid control.

e.Cancel = Not IsF2Pressed
IsF2Pressed = False

Here is a modified sample.
http://www.syncfusion.com/Support/user/uploads/validation_1df8e054.zip

Please let me know if you need any further assistance.
Best Regards,
Haneef

[Philip Bishop]

Ok so you didn’t answer my questions. I know what the F2 key does! I know it goes in to edit mode! In testing apps you need to try all possible combinations that you think might have an impact on the grid. After typing in an invalid amount and pressing F2 I get my error message which I should. What you didn’t answer is why am I getting that empty message box after my error message? I know pressing F2 gets me in edit mode, but what should happen if you are in edit mode and someone presses it again and it has to go to the validating event first and finds an error. I can’t imagine that is what is suppose to happen. Just some random empty message box with an ok button that appears for no reason???? Can you please explain what’s going on and why this is happening? I am not in a position where I can go in 500+ forms and add a key down to each form.

Thanks.

[Administrator]

Hi Phillip,

We regret for the inconvenience caused. We were able to see the issue here and I have logged a bug report.

You could track the progress of the issue here:
http://www.syncfusion.com/support/issues/grid/Default.aspx?ToDo=view&questId=2186

Right now, you can use the below code snippet as a work-around.

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>..
You can try handling the grid''s KeyDown event to avoid this problem.

Private Sub grdAGCY_ACCR_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles grdAGCY_ACCR.KeyDown

Dim modifierKeys As Keys = Control.ModifierKeys
Dim keyCode As Keys = e.KeyCode And Keys.KeyCode
Dim controlKeyDown As Boolean = (e.Modifiers And Keys.Control) <> Keys.None
Dim shiftKeyDown As Boolean = (e.Modifiers And Keys.Shift) <> Keys.None
Dim extendSelection As Boolean = (modifierKeys And Keys.Shift) <> Keys.None
Dim menuKeyDown As Boolean = (e.Modifiers And Keys.Menu) <> Keys.None
Dim CurrentCell As GridCurrentCell = Me.grdAGCY_ACCR.CurrentCell
Dim isHandled As Boolean = False

If keyCode = Keys.F2 Then
If Not controlKeyDown And Not menuKeyDown And Not shiftKeyDown Then
If Not CurrentCell.IsEditing Then
CurrentCell.BeginEdit()
isHandled = True
Else
Try
CurrentCell.EndEdit()
CurrentCell.Refresh()
Focus()
Me.grdAGCY_ACCR.FixCurrentCellGotFocus()
Catch ex As Exception
If Not ExceptionManager.RaiseExceptionCatched(Me, ex) Then
Throw ex
End If
Dim hasFocus As Boolean = Me.grdAGCY_ACCR.HasControlFocus
If ex.Message.Length > 0 Then
MessageBox.Show(FindFormHelper.FindForm(Me), ex.Message)
End If
If hasFocus And Not Me.ContainsFocus Then
Focus()
End If
End Try
isHandled = True
End If
End If
End If
e.Handled = isHandled
End Sub
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>..

Thanks for your patience,
Best Regards,
Haneef

[Administrator]

Ok so I am confused now. Why are you sending me another sample of code that is different then the first sample you sent me?

[Administrator]

Sorry to confuse you.

The second suggestion only touches one event, not two events as did the first. This second suggestion is also more in line with what the eventual correction to our source code may look like as this code was copied from the GridControl.OnKeyDown source where the F2 key is currently handled. This copied code is slightly modified to avoid the second MessageBox that appears in the sample.

[Administrator]

Well welcome back Clay!!! Thanks for the explanation. We will probably just wait for the new version on this one. Thanks again.