Grouping of columns in RadGridView by using a ColumnGroupDescriptor in XAML does not work when ShowGroupPanel is set to False and there is a RelativeSource binding in the ColumnGroupDescriptor.

Hello

Good job with the Fluent theme! I'm using the core styles with validation in my GridViews and have noticed that the bottom border is not/barely visible in invalid grid cells (see attached screenshot).

I can fix this by taking a copy of GridViewCellCoreValidationTemplate and adding Margin="0 0 0 1" to Background_Invalid.

Cheers
Jack

An implicit style could be added:

<Style TargetType="telerik:FilteringControl" BasedOn="{StaticResource FilteringControlStyle}">
   <Setter Property="Background" Value="{telerik:FluentResource ResourceKey=AlternativeBrush}" />
</Style>

A TargetName = "FilterIcon" should be added to the foreground setter in the trigger in the control template of the FilteringDropDown.

The performance of the RadGridView scrolling diminishes significantly when the grid has thousands of rows and alternating row styles are used.  This causes scrolling to be virtually unusable.  I note this is a known limitation of the RadGridView from information from https://docs.telerik.com/devtools/wpf/controls/radgridview/troubleshooting/performance 

We have had to remove the alternating row styles from our current product while porting to the RadGridView.  I am requesting if this issue is going to be fixed in the future anytime soon.

To reproduce the problem, there need to be defined a huge amount of columns(400-500). The workaround is to call the Clear method of the Columns collection of RadGridView

Available in LIB version 2018.1.122, it will be also available in the R1 2018 SP Release.

The fix is available in the R1 2018 Release.

Currently, RadGridView's data engine relies on TypeDescriptor.GetProperties, when resolving the set of properties accessible through a certain type. Apparently, this API hides the properteis from the interface, as they are not accessible throught the concrete type.

The unconfirmed inputs of filter row editors are being destroyed together with the editor itself in column-visualized GridViews. There's an easy solution for it (store what was in there and restore upon recreation) and we're waiting for an official fix for this "expected behaviour" since three+ years.

Available in LIB version 2018.1.205, it will be also available in the R1 2018 SP2 Release.

As of R1 2018 the GetCellContent method is no longer used for exporting a custom column content. Instead, the GetExportCellContent one of GridViewBoundColumnBase needs to be overriden.

Similar to the one in RadPivotGrid:
https://docs.telerik.com/devtools/wpf/controls/radpivotgrid/features/localdatasourceprovider/serialization

And here is an online demo:
https://demos.telerik.com/silverlight/#PivotGrid/Serialization