RadDiagram Layout with Busy indicator

[Brett]

I am creating some rather large diagrams that take some time to load, so I am using a busy indicator to display while the diagram loads. I run this busy indicator in a background thread to keep the UI responsive. Once the loading is complete in the RunWorkerCompleted method I set the GraphSource property in my ViewModel which is bound to my diagram. I am subscribing to the GraphSourceChanged event of the diagram, at which point I set the layout to be ​'TreeLayoutType.TreeDown'. 

This was working perfectly until I introduced the busy indicator on a seperate thread. The GraphSourceChanged still gets called at the appropriate time however the diagram does not layout at all with all of the diagram items stacked on top of each other. Im assuming this is a threading issue, but thought it would work correctly as in setting the databound GraphSource property on the RunWorkerCompleted which should be using the UI thread.

Any help appreciated.

[Petar Mladenov]

Hello Brett,

Could you please try using LayoutAsync() method instead of Layout() and let us know if it solves this scenario ? Thank you in advance.

Regards,
Petar Mladenov
Telerik

[Brett]

The LayoutAsync() has resolved the issue thank you!!

However, as suggested in the support ticket to get the AutoFitAsync() to work I downloaded the latest 2014 Q1 release and I get the following runtime exception.

Set property 'System.Windows.ResourceDictionary.DeferrableContent' threw an exception.n.

I notice that other users have experienced the same exception with other releases. I have given up on this for now as i have wasted all morning on it and reverted to the previous version.

[Petar Mladenov]

Hi Brett,

We can assist you in upgrading your project to Q1 2014. Could you please elaborate a bit more on your XAML exception ? Have you checked if there is an inner exception ? When upgrading to new assemblies you also need to update your styles sometimes. If you have used a custom styles that are modifications of Styles from previous releases you may need to update some of them to the Styles release with Q1 2014.

You can send us the styles that produce the exception and will help you in upgrading them.

Regards,
Petar Mladenov
Telerik

[Brett]

That is the inner exception. The first exception is 'Initialization of 'Telerik.Windows.Controls.Diagrams.Extensions.RadGeometryButton' threw an exception.' 

BaseUrl - /Telerik.Windows.Controls.Diagrams.Extensions;component/Themes/GenericVista.xaml

However I am not using this GenericVista.xaml style and  have not referenced it in previous versions.

Furthermore, the AutoFitAsync() is still not an available method to call on my diagram.

[Pavel R. Pavlov]

Hello Brett,

It looks like our latest official release is not referenced in your custom application. I think so because the AutoFitAsync() method is available in our Q1 2014 release. Could you please double check if the proper binaries are referenced in your application?

Regarding the reported exception, it could also be caused by different versions of the referenced binaries.

Please make sure that all binaries are from our Q1 2014 official release and let us know if you still reproduce the issue.

Regards,
Pavel R. Pavlov
Telerik

 

 

[Brett]

I have checked the assemblies and they are all from the latest release. I can now the new AutoFitAsync() method, however I am still getting the exception.

Inner Exception: ​The method or operation is not implemented.

Stacktrace:

   at System.Windows.Baml2006.Baml2006SchemaContext.ResolveBamlType(BamlType bamlType, Int16 typeId)
   at System.Windows.Baml2006.Baml2006SchemaContext.GetXamlType(Int16 typeId)
   at System.Windows.Baml2006.Baml2006Reader.Process_PropertyTypeReference()
   at System.Windows.Baml2006.Baml2006Reader.Process_OneBamlRecord()
   at System.Windows.Baml2006.Baml2006Reader.ReadKeys()
   at System.Windows.ResourceDictionary.SetDeferrableContent(DeferrableContent deferrableContent)
   at System.Windows.Baml2006.WpfSharedBamlSchemaContext.<Create_BamlProperty_ResourceDictionary_DeferrableContent>b__168(Object target, Object value)
   at System.Windows.Baml2006.WpfKnownMemberInvoker.SetValue(Object instance, Object value)
   at MS.Internal.Xaml.Runtime.ClrObjectRuntime.SetValue(XamlMember member, Object obj, Object value)
   at MS.Internal.Xaml.Runtime.ClrObjectRuntime.SetValue(Object inst, XamlMember property, Object value)


I can see this value in the baseUrl, not sure why its trying to access GenericVista.xaml?

{pack://application:,,,/Telerik.Windows.Controls.Diagrams.Extensions;component/Themes/GenericVista.xaml}

[Pavel R. Pavlov]

Hi Brett,

As I am not able to reproduce the reported exception on our side I will ask you to create a small isolated project demonstrating the issue and send it over. You can do this by using our ticketing system. You can log into your Telerik account and you will be able to start a new ticket where you can attach a zip file.

By sending us a small repro project we will be able to reproduce the reported behavior on our side and further investigate the reasons behind.

Thank you for your kind cooperation.

Regards,
Pavel R. Pavlov
Telerik