To bind the IsExpanded Property to my own IsExpanded property I use the following snippet:

<Style TargetType="{x:Type telerik:RadTreeViewItem}" x:Key="ItemContainerStyle"  >
    <Setter Property="IsExpanded" Value="{Binding Path=IsExpanded,Mode=TwoWay}"/>
</Style>

This works fine so far but the highlight color of the nodes turned from blue into grey. How can I keep the original style and only add the setter property?

I have DragAndDrop enabled on a RadGridView. This works, but when I want to scroll or I try to resize the column header a dragAndDrop action is also started that prevents the scrolling or resizing.

How can I detect that the DragAndDrop event started on a scrollbar or a column header and stop the event?

Solutions I found on the telerik page are all with the old RadDragDropManager and not with the DragDropManager that should now be used. I can't find the equivalent function for e.GetElement<T> that was called on the  in the DragDropQueryEventArgs. This would be called in the DragInitializeHandler.

Hi,

I'm facing this CPU usage increases problem when mouse over on the GridView and the application started consuming CPU usage percentage almost 28% to 35% .

By using Telerik SP1-R2-2017 Telerik Controls for WPF.

Here I've tested it on a machine having these specifications,

Windows 8.1 Sony Vaio Core-i7 3537u 3rd Generation ,System Model : svt131317cvs.

Please give me solution to fix these issues regarding to GridView .

Thanks,

I use the Telerik libraries 2014.2.811.45.

I have a tree which can be edited by the user. The user as well can adjust the width of the tree and make it narrow enough to cut off some of the node names.

This post here (http://www.telerik.com/forums/treeview-tooltips-instead-of-horizontal-scroll-bar) seems to solve the problem but is unfortunately outdated. The API has changed meanwhile - the functions/properties don't exist any more.

Still I tried to adjust the solution to my library version but I couldn't get it work. The solution gets the bounds of the tree and each of its items and compares them. This seems to be an easy and adequate solution which I would like to use as well. Trying out different properties showed me the following: Width seems to return NaN. ActualWidth seems to return pretty much the width of the tree whether it is called on the tree or the node. I would expect it to return the width of the node name if called on the node. Further I could not find a property to get the right border of the tree/items.

How can I solve this problem with my telerik libraries?

I am using a RadColumnSparkline inside a RadTimebar but can't style the columns so they look a bit better than out of the box.

I want the columns to have a margin between each other, rounded tops and a dark border color. 

I've already tried to overwrite the telerik column style to tackle the rectangle for the column but no column was shown:

  <telerik:RadColumnSparkline.Resources>
<Style TargetType="telerik:Column" BasedOn="{StaticResource ColumnStyle}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="telerik:Column">
<Rectangle Stroke="Black" Margin="5,0,5,0"  Fill="{TemplateBinding Fill}"/>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</telerik:RadColumnSparkline.Resources>

I've attached an image  of  how they currently look .

This is the code for the timebar:

<telerik:RadTimeBar 
Grid.Column="1"
x:Name="TimeBar"
PeriodStart="{Binding AppearanceSearchOverview.PeriodStart, Converter={StaticResource DateTimeToLocalTimeConverter}}"
PeriodEnd="{Binding AppearanceSearchOverview.PeriodEnd, Converter={StaticResource DateTimeToLocalTimeConverter}}"
VisiblePeriodStart="{Binding ElementName=TimeBar, Path=PeriodStart}"
VisiblePeriodEnd="{Binding ElementName=TimeBar, Path=PeriodEnd}"
Selection="{Binding Path=TimeRange, Converter={StaticResource TelerikTimeRangeConverter}, Mode=TwoWay}"
MinSelectionRange="00:01:00"
MaxSelectionRange="72:00:00"
MinZoomRange="00:15:00"
Background="{StaticResource PanelBackgroundBrush}"
SelectionTitleFormatString="{}{0:HH':'mm':'ss} - {1:HH':'mm':'ss}"
IsSnapToIntervalEnabled="False">
<telerik:RadTimeBar.Intervals>
<telerik:DayInterval />
<telerik:HourInterval />
<telerik:MinuteInterval IntervalSpans="5" />
</telerik:RadTimeBar.Intervals>
<Grid>
<telerik:RadColumnSparkline 
AutoRange="False"
ItemFill="#3D6F99"
MinYValue="{Binding AppearanceSearchOverview.MinValue}"
ItemsSource="{Binding AppearanceSearchOverview.Results}"
XValuePath="X"
MinXValue="{Binding ElementName=TimeBar, Path=PeriodStart}"
MaxXValue="{Binding ElementName=TimeBar, Path=PeriodEnd}"
YValuePath="Y"/>

</telerik:RadTimeBar>