Working on a project where I have a cell template DataContext bound to the GridViewCell Value.

 <DataTemplate x:Key="DefaultCellTemplate">

 <StackPanel DataContext="{Binding Value, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type telerik:GridViewCell}}}">

                <TextBlock Text="{Binding PropertyValue, Mode=OneWay}"></TextBlock>
            </StackPanel>
 </DataTemplate>

<DataTemplate x:Key="DefaultCellEditTemplate">
            <StackPanel DataContext="{Binding Value, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type telerik:GridViewCell}}}">
                <TextBox Text="{Binding PropertyValue, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"></TextBox>
            </StackPanel>
        </DataTemplate>

When entering values and tabbing through cells, when on the last cell and tab to move to first cell of the next column, I'm getting an app crash.  This seems to occur when virtualization is on and there are enough columns to cause the grid to scroll horizontally, and the UpdateSourceTrigger of the edit template is PropertyChanged.  Attached is a sample project that can reproduce the error.

I have a RadTreeView with some Containers and some Items (the items do not contain other items). When I activate Drag and Drop everything works fine. My problem is that I have some Containers that should not work as drop target. Unfortunatly I could not find an example.

First I tried the property IsDroppingAllowed (I used it like IsExpanded and IsSelected). Unfortunatly the getter is never called.

Than I tried "OnDragOver"

or

and everything works fine. But after a while it drives me crazy. Is there anywhere a good example? Is there anywhere a checklist what I have to reimplement? 

I tried to use the DropTargetItem to check if the dropping is allowed.

If I drop inside everthing is fine. If I drop before (Telerik.Windows.Controls.DropPosition.
Before) it seems that my dropItem I used for IsDroppable() is not the container where the RadTreeView drops my item. 

An other trapdoor it that I have to check that I do not drag an Item in itself (drag A and drop it in A or drop in a child of A).

Hi team,

I am using custom Connectors and Connections along with MVVM. Per the thread, I can add some custom connection points in the overridden method GetConnectionContainerForItemOverride, 

                return a custom connection object;

Meanwhile I want to attach the connection to my custom connectors inside this method. However, at this time, the connectors of the shape still are the 5 default connectors. Are there any means to control the sequence of the overwritten methods? Or I should overwrite another virtual method? 

Thanks,

Jingfei

There is a bug in RadListBox when using GroupStyle. When I select any an item from second group, radlistbox scrolls to first item in second group. This makes double click on an items almost imposible.

I wrote a simple sample demonstrating the behaviour with comparison to regular listbox

Hello,

I have a custom control which inherits from usercontrol. My control is the itemtemplate of a radtreeview.

<telerik:RadTreeView.ItemTemplate>

    <HierarchicalDataTemplate ItemsSource="{Binding MyList}">

         <MyControls:MyTreeNode AllowDrop="{Binding IsDropAllowed}"/>

    </HierarchicalDataTemplate>

</telerik:RadTreeView.ItemTemplate>

I want to bind the AllowDrop Property from my control (MyTreeNode). When AllowDrop is false, it should not possible to drop other nodes on this node. But this doesn’t work. The radtreeview ignores the allocation. Is there any way that my control has the same behavior likes a radtreeviewitem, when the IsDropAllowed Property is false.


With best regards,
Sico

Hi, I want the time bar to show hours in European format (e.g 23 and not 11 PM).

The only way I found to achieve this is to set the global Telerik.Windows.Controls.LocalizationManager.DefaultCulture.

1. 1. I tried to set Telerik.Windows.Controls.LocalizationManager.DefaultCulture to "de-DE". It removes AM/PM but does not change the number. So the range I get is 1-12 and not 0-23
2. In our application we use a custom culture info, something like this
   cultureInfo = new CultureInfo("en-US");
   cultureInfo.NumberFormat = ...
   cultureInfo.DateTimeFormat.ShortDatePattern = ...
   
   What part of the cultureInfo is used to determine how hours are shown in time bar?
3. I have similar issue with datetimepicker. How can i modify our culture info such that is uses 0-23 for hours instead of AM/PM (I see it has a property culture, so here I can just set "de-DE" as a workaround without effecting rest of application)