Not being able to select multiple value in RADLISTBOX

[Manishkumar]

In Radlistbox when Select "Shift button" all or mulitple  values
are not being able to select.
please find the example in the attach screen capture

[Dimitar Terziev]

Hi Manishkumar,

We couldn't reproduce the problem you are experiencing.
Could  you verify that you experience the sample problem on our demo here and also the browser and version of the controls you are using.

Best wishes,
Dimitar Terziev
the Telerik team

[Unknown]

I am facing a different problem when adding items to the selected Items collection above the 500 elements, the selection takes a long time which is directly proportional to the number of items being added to the collection. For example when the selection reaches up to 1000 elements, the time to add further elements to the selected items collection, at this instance, is approx 10 items per second which is very slow response. What should I do in this context?


Regards,
Unknown Developer

[Dimitar Terziev]

Hi,

Could you share with us the exact implementation that you are using?

Regards,
Dimitar Terziev
the Telerik team

[Unknown]

Thanks for the reply!
Well my list contains around a thousand items. When I select all, this list just goes in sleep, not only for a second or two but for a minute or even more worst condition appears when i select more than a thousand items. I think it is a bug.

    this.Cursor = Cursors.WaitCursor;
            MyList.Sorted = Telerik.WinControls.Enumerations.SortStyle.None;
            MyList.SelectedItems.Clear();
            MyList.BeginUpdate();
    //This line of code is the problem.
            MyList.SelectedItems.AddRange(MyList.Items.ToArray());
    // NOTE: Even i tried 'foreach loop' instead of
    // 'MyList.SelectedItems.AddRange()' but the result was same.
            this.MyList.Sorted = Telerik.WinControls.Enumerations.SortStyle.Ascending;
            MyList.EndUpdate();
            this.Cursor = Cursors.Default;

Waiting for your reply.

Regards,
Unknown Developer