Hi,

The Radwindown show incompletely  when restoring from minimum state, just like there is no fresh to most of window area.

I asked in the SO site , but there is no answer. 

https://stackoverflow.com/questions/59711037/telerik-radwindow-render-incompletely-when-setting-allowtransparency-false

Thanks.

Hi.

I would like to obtain a donut-like graph similar to the one in the image. How could I put text inside a donut graphic?

Thank you.

I have a large dynamic number of series to display on a RadCartesianChart (series will be generated using a SeriesProvider). Groups of series will share a common vertical axis (such as 5 series on axis A, and another 5 series on axis B).  All series will be of the same type.

If possible, I'd like to use a palette for automatically assigning the colors to each series.  However, the series on Axis A should have one group of colors (e.g. various shades a red), and the series on Axis B should have a different group of colors (e.g. various shades of blue). 

Is there a way to use a separate palette for each group of series, or associate a group of series with a given group of PaletteEntries?  Since all series will be of the same type, I assume I can only create one SeriesEntry collection in a custom palette for this series type.

Or are my best options to manually assign the appropriate PaletteEntry to each series, or forget the palette altogether and just manually assign the desired colors?

I'm trying to modify the tab control's header background and border with the style triggers when the tab is selected but nothing seems to be working and the code also doesn't shows any error message.

Below is the XAML of the control:

<telerik:RadTabControl x:Name="presetTab" Grid.Row="1" Margin="0,5" VerticalAlignment="Stretch" HorizontalAlignment="Stretch" 
   ScrollMode="Item" HeaderBackground="#F7F3F2"
   ItemsSource="{Binding Source={StaticResource DataSource}, Path=Tabs}"
   ContentTemplateSelector="{StaticResource ContentSelector}">
<telerik:RadTabControl.ItemContainerStyle>
<Style TargetType="telerik:RadTabItem">
<Setter Property="BorderBrush" Value="#BCBCBC"/>
<Setter Property="BorderThickness" Value="1"/>
<Setter Property="HeaderForeground" Value="Black"/>
<Style.Triggers>
<Trigger Property="telerik:RadTabItem.IsSelected" Value="True">
<Setter Property="BorderBrush" Value="#BCBCBC"/>

<Setter Property="BorderThickness" Value="1"/>

</Trigger>
</Style.Triggers>
</Style>
</telerik:RadTabControl.ItemContainerStyle>
</telerik:RadTabControl>

I need to apply the same border style as normal when the tab is selected and the background color will be different.

I tried the IsSelected property both in Data Trigger and in Style Trigger but both is not working. What am I doing wrong.

Regards,

Karthik N

Hello

I have a Grid with dynamic object on DataSource with AutoGeneratedColumns.

When I open a filter on any column, i only have 4 options : "equals / not equals / null / not null"

How can I activate "contains" when my colum is string ?

To reproduce, you can test on 'BindingToDynamicObject' project on sdk (https://github.com/telerik/xaml-sdk/tree/master/GridView/BindingToDynamicObject)

Thanks for your help

Hello,

I've implemented a Pivot Grid in an application and noticed that the date format doesn't follow the localization (in this case French).

The dates will always be displayed in [MM/dd/yyyy hh:mm:ss]

After some research, I've created a DateTimeGroupDescriptor to fix the displayed format.

However, it breaks the "Label filter" option (ex: when filtering with "is greater than 01st Jan 2019", it still displays 2011 entries).

If I don't use the group descriptor, it works fine.

How can I fix this? (my goal is to display the dates in the following format [dd/MM/yyyy] while preserving the Label filter option)

By the way, I'm using the latest R1 2020 SP1 update.

Let me know if you need more information.

Side note: when using the UI culture fr-FR, the sorting label is incorrects

It says "Classer de A à Z" for "Sort Z to A" instead of "Classer de Z à A" ;)

I am using QueryableCollectionView (QCV) together with EF Core 3.1.2 as a datasource for RadGridView. As soon as I set an AggregateFunctions on a DataColumn in my grid EF Core throws an error:

System.InvalidOperationException
  HResult=0x80131509
  Message= Processing of the LINQ expression '(GroupByShaperExpression:
KeySelector: (1), 
ElementSelector:(EntityShaperExpression: 
    EntityType: SalesOrderHeader
    ValueBufferExpression: 
        (ProjectionBindingExpression: EmptyProjectionMember)
    IsNullable: False
)
)' by 'RelationalProjectionBindingExpressionVisitor' failed. This may indicate either a bug or a limitation in EF Core. See https://go.microsoft.com/fwlink/?linkid=2101433 for more detailed information.
  Source= Microsoft.EntityFrameworkCore.Relational

I consider this as a serious bug. The way EF Core 3.x supports query evaluation has changed drastically compared to former versions (as mentioned in the link inside the error message) and it seems that Telerik's query building is not taken this fact into account.

It is quite simple to reproduce the error:

1. Create a .NET Core 3 WPF project with Telerik.UI.for.Wpf.NetCore 2020.1.218
2. Add EF Core 3.1.x package
3. Create a DbContext with just one table (which is enough to reproduce the error)
4. Create a QCV from the table
5. Place a RadGridView and bind it to the QCV

Everything should work as expected. Now place an AggregateFunction like CountFunction on one DataColumn and you should see the error. There is also a similar issue in this thread:

https://www.telerik.com/forums/todatasource-throws-exception-using-ef-core-3-0-with-groups

At the moment I am migrating a WPF application from .NET 4.6.1 to .NET Core 3 and I rely heavily on QCV. I would be very grateful for any help!

Regards
Heiko

Fairly new, and I hope this isn't a dumb question, but...

When I create a RadTimeBar by its lonesome, and bind values to the PeriodStart/End, SelectionStart/End everything works as expected. If I use it in a ItemTemplate in a RadListBox, intervals no longer show.

Any ideas?

Hi,

I am trying to conditionally format the contents of merged cells. For this I have implemented a MergedCellStyleSelector as per the examples. The setters all work as expected except for setting the foreground color. If I look at the live visual tree in VS I can see that the data gets presented in a text block which does not inherit from the foreground property set on the conditional style.