We are using Radgridview in our wpf application which is autogenerated using Class Models. When the number of columns are quite huge(more than 35-40 columns), the performance of the horizontal scrollbar is quite poor and even worst when the data on the Grid is huge. Infact the experience it gives while scrolling seems as if the scrollbar is continuously growing. I have tried the following settings on the RadGridView in the xaml but there is no significant improvement in the performance:

EnableColumnVirtualization="True" EnableRowVirtualization="True" VirtualizingPanel.IsVirtualizing="True" VirtualizingPanel.VirtualizationMode="Recycling" ScrollViewer.CanContentScroll="False" ScrollMode="Deferred"

When a gridview is placed in TabControl, the following CodedUI tests will fail:

Test 1. Click on a column header to sort by that column.

Test 2. Click on a drop-down button to filter a column.

Test 3. Drag a column to group by it. 

The workaround could be using QueryableCollectionView instead. Still, it does not suggest the exact same functionality as ICollectionView.

ValidationErrorHandler does not get invoked when validating in view mode and System.ComponentModel.INotifyDataErrorInfo interface is implemented.

I have a RadGridView with RadLinearSparkLines as a column showing ~100 trends.  I am looking to save all sparklines when I save screenshot.
I tried by querying the RadGridView for desired size after a call to Measure(), and pass it to the Arrange().  However, the RadGridView renders within the bounds of its actual size but not the desired size.  I also noticed that the desired size is not as tall as the size required to render all rows.
Is there any way I can save RadGridView as PNG with all rows rendered in the image?

Thanks in advance for any tips!

Pasted rows are not correct after coping all rows with SelectionMode Extended. This is caused by the incorrect count of the cells in SelectedCells collection. 

Resolved with LIB version 2014.1.0428.

PropertyChanged event is called for a cell with nullable value when is in edit mode and click on another cell

Wrong selection when data is real time updated

The problem should be resolved with lib version 2016.1.125

New row in Bottom position is not visible in the child grid when the grid has no items