ScrollIntoViewAsync failing when index is at the last item

[theresa]

Hi, I got the code from http://docs.telerik.com/devtools/wpf/controls/radgridview/columns/how-to/scroll-item

 

My code :

when DropRowIndex = 16 and the items.count=17 , it calls the scrollFailedCallback , I tried to make it this.timetableGrid.Items[this.timetableGrid.Items.Count -1] and it still fails. WHy? My items count is 17 so it should not be failing. I hardcoded it into DropRowIndex = 15 and it is calling scrollFinishedCallback which is what I want to happen. May I ask why rowindex 16 is not working ?

if (this.timetableGrid.Columns.Count > 0 && DropColIndex <= this.timetableGrid.Columns.Count)
            {
                IsScrollBarForceIntoView = false;
                int offsetCol = 0; int offsetRow = 0;
                if ((DropColIndex + 3) <= (this.timetableGrid.Columns.Count - 1))
                    offsetCol = 3;
                if ((DropRowindex + 3) <= (this.timetableGrid.Items.Count - 1))
                    offsetRow = 3;
                this.timetableGrid.ScrollIntoViewAsync(this.timetableGrid.Items[DropRowindex + offsetRow], //the row
                                this.timetableGrid.Columns[DropColIndex + offsetCol], //the column
                                 new Action<FrameworkElement>((f) =>
                                  {
                                      App.MainWindow.IsBusy = false;
                                  }), new Action ( ()=>
                                      {
                                          App.MainWindow.IsBusy = false;
                                      }
                                    ));
                isDrop = false;
            }
            else
            {
                App.MainWindow.IsBusy = false;
                DropColIndex = 0;
            }

[theresa]

Anyone?

I tried making it this.timetableGrid.Items.Count-1 but still throws the failed call back. I mean the sample itself is not working in mine.

 The workaround is minus 2 from the actual items. ex. 16-2 = 14th index. It now calls the finished call back but the effect is not desirable as it is not scrolled down to the edge, where I can see the item i need to put in view.

   this.timetableGrid.ScrollIntoViewAsync(this.timetableGrid.Items[this.timetableGrid.Items.Count-1], //the row
                                this.timetableGrid.Columns[this.timetableGrid.Columns.Count-1], //the column
                                 new Action<FrameworkElement>((f) =>
                                  {
                                      App.MainWindow.IsBusy = false;
                                  }), new Action ( ()=>
                                      {
                                          App.MainWindow.IsBusy = false;
                                      }
                                    ));

[Ivan Ivanov]

Hello,

I believe that the behavior that you are reporting is related to a known issue that is currently on our radar. If it is so, the scenario should be operating properly if GroupRenderMode is set to nested. Here is the public item to it, so that you can subscribe and get notified as soon as a fix gets available.

Regards,
Ivan Ivanov
Progress Telerik