This is urgent since I can't do anything else on my WPF app until this gets figured out! 

I was trying to add a RadCartesianChart on an existing WPF project and I was having the following error message on the designer view(even though it would compile and run normally):

[System.InvalidOperationException
Sequence contains more than one element
   at System.Linq.Enumerable.SingleOrDefault[TSource](IEnumerable`1 source)
   at Microsoft.VisualStudio.DesignTools.XamlDesigner.Metadata.MockTypes.MockTypeGenerator.DefineGenericParameters(Type type, MockTypeDefinition mockType)
   at Microsoft.VisualStudio.DesignTools.XamlDesigner.Metadata.MockTypes.MockTypeGenerator.PopulateMockType(Type type, MockTypeDefinition mockType)
   at Microsoft.VisualStudio.DesignTools.XamlDesigner.Metadata.MockTypes.MockTypeGenerator.DefineType(Type type)
   at Microsoft.VisualStudio.DesignTools.XamlDesigner.Metadata.MockTypes.MockTypeGenerator.MockGenericType(Type type)
   at Microsoft.VisualStudio.DesignTools.XamlDesigner.Metadata.MockTypes.MockTypeGenerator.DefineType(Type type)
   at Microsoft.VisualStudio.DesignTools.XamlDesigner.Metadata.MockTypes.MockTypeGenerator.DefineProperty(TypeDefinition typeDefinition, PropertyInfo propertyInfo)....]

I tried a bunch of different things and the error remained, so I decided to create a new WPF project and paste some code from the RadChartView - Getting Started topic on http://docs.telerik.com/ and then I got
[System.NullReferenceException
Object reference not set to an instance of an object.
   at Microsoft.VisualStudio.DesignTools.XamlDesigner.Metadata.MockTypes.MockTypeDefinition.ImplementAbstractEvent(EventDefinition eventDefinition, Boolean shouldOverride, Action`3 emitAddMethodBody, Action`3 emitRemoveMethodBody)
   at Microsoft.VisualStudio.DesignTools.XamlDesigner.Metadata.MockTypes.InterfaceEmitterFactory.DefaultInterfaceEmitter.ImplementEvent(EventDefinition eventDefinition, Boolean shouldOverride)...]

I don't know if it helps but I attached an image of what the error looks like on the second case.

Hi,

I use INotifyLocationChanged to raise event when items of a VisualizationLayer move and it throws an exception in some particular case. I've joined a sample project that demonstrate this particular case. I'm I doing something wrong or this is a bug ?

Thank you,

Etienne

Hi,

 I've implemented the ScheduleView via my own models implementing the IAppointment interface.

In the normal Week view everything works fine, but as soon as I add a grouped view to the ScheduleView no appointments are displayed (although they are correctly loaded in the viewmodel).

The XAML I add:

<telerik:RadScheduleView.GroupDescriptionsSource>
                <telerik:GroupDescriptionCollection>
                    <telerik:ResourceGroupDescription ResourceType="Mitarbeiter"/>
                    <telerik:DateGroupDescription />
                </telerik:GroupDescriptionCollection>
</telerik:RadScheduleView.GroupDescriptionsSource>

Any suggestion what I'm doing wrong?

 thx​

I'm new to this so I'm hoping to find some direction.  I have a plot on in a RadCartesianChart.  I want to be able to right-click and capture the location of the mouse at that place. Before we had a double click mouse event and were able to do this:

Now I have this:

I can get the location of the MouseButtonEvent, but once I do I'm not sure how to set it as a GraphPlot.

Here's my XML:

We have a existing project that uses some older telerik libraries.
This application uses the RadRibbonView inside of an ElementHost control. It works great with the older telerik libraries.

I upgraded to the latest 2015 Q3 binaries and I am having problems.

The ribbon no longer displays in the element host.

I did some sanity checks by putting other telerik components into the element host, and they display fine.

Attached is a simple project that reproduces the issue.

Basically it creates a usercontrol.
Adds a simple ribbonview
Adds this ribbon view to a win forms control via element host.

Link to the project:
https://goo.gl/vJv5BG

Hey, I'm doing automated UI testing on a WPF application and we want to test exporting a table into multiple formats. The issue I'm having is that I can't seem to change the "Save as type" drop down menu in the save dialog. I'm using this script to save the file right now:

SaveAsDialog saveDlg = SaveAsDialog.CreateSaveAsDialog(Manager.ActiveApplication, DialogButton.SAVE, @"C:\test " + date);
Manager.DialogMonitor.AddDialog(saveDlg);
Manager.DialogMonitor.Start();
 

// Click export button script

 
saveDlg.WaitUntilHandled(30000);
Manager.DialogMonitor.Stop();​

I use RadCarousel to show  photograph of persons in the HR module. If the user changes a person's photograph, how can I update only this single image in the RadCarousel, without reread all pictures? I use DataTemplate for the CarouselItemTemplate, a short video about it: http://www.youtube.com/watch?v=b3DCjnU-CyU .

I use PowerBuilder 12.1 .NET, so I can use only very simple things, I can’t define e.g. event handler. After I started to use this DataTemplate, the Reflection has disappeared, how can I start it again?

Thank you very much!

Péter Tóth

I have noticed that when using Intersection PropertySetMode that property change notifications from Objects in the List of items are not used by the property grid. Is this a known limitation or a bug?

I am using version 2015.2.728.

// Property change notifications from myObject1 and myObject2 do cause the property grid values to update.