Bug when DataLoadMode is set to Asynchronous

[Ivan Zlatanov]

Hi,

When you set DataLoadMode to Async, and try to expand any item the scroller always gets reset and scrolls to top. This is really annoying, can you confirm this is a bug please, and not something "by design"?

Also can you propose a solution, please?

Kind Regards,

Ivan Zlatanov.

[Dimitrina]

Hi Ivan,

Actually this behaviour is by design due to the specific Asynchronous loading mode.

You could change it and avoid the scrolling back to the first item like so:

private double offset;

        private void radTreeListView1_DataLoaded(object sender, System.EventArgs e)
        {
            this.Dispatcher.BeginInvoke((Action)(() =>
            {
                this.radTreeListView1.ChildrenOfType<GridViewScrollViewer>().First().ScrollToVerticalOffset(offset);
            }));
        }

        private void radTreeListView1_RowIsExpandedChanging(object sender, Telerik.Windows.Controls.GridView.RowCancelEventArgs e)
        {
            offset = this.radTreeListView1.ChildrenOfType<GridViewScrollViewer>().First().VerticalOffset;
        }

Please let me know if you have any problems with this code.

Regards,
Didie
the Telerik team