Hi,

In my Gridview I use grouping. I want to limit the grid so that only 1 group can be expanded at the same time. So I'm looking for a way close the expanded group when another is opened.
I tried to use the GroupRowIsExpandedChanging event and call the CollapseAllGroups method hoping that after that it would expand the click group. But it seems that it's not possible to manipulate the groups while in this event.

Is there another way I can do this?

Kind regards.

I am building a form designer in WPF. The form designer have a document outline (RadTreeView) a canvas (RadDiagram) and a property editor (RadPropertyGrid) in multiselect mode.

When I move around the tree it takes a second or two to load the selected node into the RadPropertyGrid.
Is there a way to do this asynch?

Greetings,

I would like to ask you for help. I am using RadTreeView with IsDragDropEnabled=True. But now I realised that I need to drag & drop data from RadGridView to RadTreeView but this data should not be added to the tree. On the drop they should be only added to the some initernal collection of mine.
I am able to start Drag operation from RadGridView with some visual effect. Problem is that Drop handler is never called if I drop on the RadTreeView. It is only called if I register that handler with true like this:
DragDropManager.AddDropHandler(radTreeView1, OnDrop, true);

RadTreeView has set IsDragDropEnabled=true and each RadTreeViewItem has drag and drop allowed like this:
<Setter Property="AllowDrop" Value="true" />
<Setter Property="telerik:DragDropManager.AllowDrag" Value="True" />

In you examples I have seen that it should not be a problem to add handler for drop without "true" flag like this:
 DragDropManager.AddDropHandler(radTreeView1, OnDrop); 
but it does not work for me.

I really do not know what control is handeling drop operation.
Is there something else what I should do so I can call AddDropHandler without setting last parameter "true"?

Thanks for your advise.
Dusan Hudecek

Hi There,

I have a requirement to style the Grouped/Tabbed Panes, but i don't know where i can start, can you please guide me, i have attached a screenshot for your understanding please check once.


Thanks in advance,
Srinivas.

Hello,

I migrate my project from VS2010 (V4.0) to VS2012 (V4.5).
Everything work fine except the main window as a radWindow.
I've got this error message : "presentationframework.pdb not loaded".
I tried to find in the debug options, but this file doesn't seem to exist.

When I remove the code below in App.xaml.cs, it works :

new WMain().Show();

base.OnStartup(e);

Any ideas ?
Regards

Our team has been using Telerik WPF controls for the last 12 months and were very surprised to learn that the RadTreeView auto scroll feature was removed within the last year (that's our understanding). We did end up using the the AutoScrollBehavior class attached to various threads on the subject but found a very strange drag and drop bug that was introduced with this behavior.

Our suspicion is that this feature may have been removed because it was, for lack of a better description, buggy. Does anybody know why this was removed? Are there any plans to add it back? FYI, the bug that we found is that in certain situations, dragging items with this behavior causes the DraggedItems collection found in the RadTreeViewDragEventArgs object to contain the same object twice. And when this happens, the visual cue also contains two visual objects. If it were just a visual issue we might ignore it but it actually can lead to unhandled exceptions somewhere in the bowels of the RadTreeView.

Does anybody have any further info on this?

Is it possible to make the timeline control act like a video/audio editor, where you see multiple tracks horizontally and the timeline is the length of media.  You can put media back to back on one particular track.  Something like this?

http://library.creativecow.net/articles/griffin_nick/media100_producer/VIDEO_TRACKS.jpg

Hi telerik,

I have a collection of objects bound to the a ListBox, and the SelectionMode set to "Multiple".

The objects have a property "IsSelected". 

How do I bind this property to the ListBox?

I want the property of the object to change when the user selects an item.

Thanks for help
Michael

I have a situation where I would like to ensure that related appointments shown in Timeline View of the ScheduleView are displayed in sequence, on the same line in the view.

Scenario:
I'm using the ScheduleView to render "jobs" (each represented by an appointment instance). Some of these jobs are related to the same customer and occur in sequence - one starts when another one finishes.
Using the defaults, the Schedule sometimes renders such appointments next to each other, on the same line, but other times these appoinments are split across multiple lines.

Please see the attached screenshot for an example.
In the attached example I would like to ensure that the three appointments in red boxes are always rendered on the same line in Timeline view, because they are related to the same customer.

I have thought about using resources - one for each customer - but this will cause most jobs to be placed on its own line, which in turn will result in too much wasted screen space. The user will have to use vertical scrolling more to see all jobs. So I would like to achieve this without using resource grouping.

Is this possible to do?