Exception when add and remove item from radBook by programming

[King Chan]

Hello,

I was trying to add user control or radBookItem by programming, using methods radBook.Items.Add method and radBook.Items.remove/removeAt/removeAll.

I created the radBook in xaml, then add the item in C#.
When it add the item(s), the radBook works fine.
The number of items in the radBook returned right number too.
But when I try to remove it (removeAll/removeAt(0)/remove) it will gaves me exception saying that the argument is out of range.

If I add the item though xaml, it has no problem with removing it.
But the point is that I need to create the pages dynamically in C#.
Is there something I did wrong?

Debug Log:

1

True

'sllauncher.exe' (Silverlight): Loaded 'c:\Program Files (x86)\Microsoft Silverlight\4.0.50524.0\en-US\mscorlib.debug.resources.dll'

A first chance exception of type 'System.ArgumentOutOfRangeException' occurred in System.Windows.dll

Exception:
Specified argument was out of the range of valid values.
Parameter name: index

RadBookItem randomitem = new RadBookItem();
            randomitem.Width = 500;
            randomitem.Height = 500;
            radBook1.Items.Add(randomitem);

            Debug.WriteLine(radBook1.Items.Count());
            Debug.WriteLine(radBook1.HasItems);

            radBook1.Items.RemoveAll();
            Debug.WriteLine(radBook1.Items.Count());
            Debug.WriteLine(radBook1.HasItems);

[Kiril Stanoev]

Hi King,

This issue is fixed and the fix will be available with our official release which is in few days. I'm attaching a sample project demonstrating your scenario. Have a look at it and let me know if you manage to reproduce the issue again.

Greetings,
Kiril Stanoev
the Telerik team

[King Chan]

Yes, it worked prefectly, thanaks.