Hi, One of my grid (and not the others) fire twice the dragdrop event, ofcourse this isn't wanted so a patched up with a boolean (bDragging) but I was wondering how this could happen.

Here is the code:

private void ugvGroupageFiles_DragDrop(object sender, DragEventArgs e)
        {
            if (bDragging)
            {
                try
                {
                    // Get the position on the grid where the dragged row(s) are to be dropped.
                    //get the grid coordinates of the row (the drop zone)
                    UIElement uieOver = ugvGroupageFiles.DisplayLayout.UIElement.ElementFromPoint(ugvGroupageFiles.PointToClient(new Point(e.X, e.Y)));

                    //get the row that is the drop zone/or where the dragged row is to be dropped
                    UltraGridRow ugrOver = uieOver.GetContext(typeof(UltraGridRow), true) as UltraGridRow;
                    if (ugrOver != null && !ugrOver.IsGroupByRow)
                    {
                        Object objItem = new Object();
                        String strText = String.Empty;

                        char SplitChar = ',';
                        objItem = e.Data.GetData(DataFormats.Text);//Store the data being dragged in an object

                        string[] StrObject = objItem.ToString().Split(SplitChar);

                        // Examine the different drop information and set the appropriate information
                        switch (StrObject[0])
                        {
                            case "Shipment Movement-2003015-FromGroupageFile":
                                ...

                            case "Shipment Movement-2003015":

                                clsNavMessage NavMessNewSM = ...

                                 //do some stuff
                              
                                break;
                            default:
                                e.Effect = DragDropEffects.None;
                                break;
                        }
                    }
                    e.Effect = DragDropEffects.None;
                    bDragging = false;
                    LoadData(false);
                }
                catch (Exception ex)
                {
                    frmException ExceptForm = new frmException("Error", ex);
                    ExceptForm.Show();
                }
            }
        }

 private void ugvGroupageFiles_DragEnter(object sender, DragEventArgs e)
        {
            bDragging = true;
            e.Effect = DragDropEffects.Copy;
        }