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v1.2 Beta 7 released! (ThemeResources, more)

Posted: Fri Nov 02, 2018 9:23 am
by JS-Support @Userware
Dear CSHTML5 users,

We are pleased to inform you that the version 1.2 Beta 7 of C#/XAML for HTML5 - the extension for Visual Studio that lets you build cross-platform HTML5 apps in standard C# and XAML - is available for download!

(61.27 MiB) Downloaded 223 times

Learn More about C#/XAML for HTML5.

Here is what's new since v1.2 Beta 6:

  • Support for ThemeResources, ThemeDictionaries, and built-in system colors/brushes
  • Support for Application.TryFindResource(...)
  • Support for defining "Storyboard.TargetName" at the Storyboard level (in addition to the already supported Animation level)
  • Support for HashSet2.IntersectWith
  • Support for TextBox.CaretBrush (note: Edge does not support changing the caret brush color at the time of writing)
  • Improved StaticResourceExtension so that it now also looks in the Application's built-in resources if it couldn't find the resource in the XAML
  • Fixed regression introduced in v1.2 beta 6, which sometimes caused the exception "RuntimeBinderInternalCompilerException" when running a Storyboard
  • Fixed an issue with the Serialization and Deserialization of subclasses of IEnumerable
  • Fixed the issue that prevented defining multiple attached properties with the same name on different Types
  • Fixed issue where the file "interopcalls.js" produced by the "Debug JS code...." feature of the Simulator (in the bottom-left corner) was incomplete

We are also working on many other features and we will release them as soon as they are ready.

You may also be interested to read:

Notes about installation:
  • Before installing this update, it is recommended that you close all the open instances of Visual Studio.
  • If for some reason you need to revert to a previous version, simply uninstall this one (from the Control Panel) and reinstall the previous version.

We hope you will enjoy this build! If you find any issues, please post them on the forums or send an email to

Thank you.

Re: v1.2 Beta 7 released! [Download] (ThemeResources, more)

Posted: Fri Nov 02, 2018 9:53 am
by berend
Thanks for the bugfixes. You provide excellent developer support, this gives me much confidence in the product! :)


Errors, ...

Posted: Sat Nov 03, 2018 10:42 am
by Nick
:!: :!: :!: :!: :!: :!: :!:
After install this version multiple errors occure like:


Severity Code Description Project File Line Suppression State
Error C#/XAML for HTML5: AssemblyReferenceValidator failed: System.Exception: Type not found 'CompilerVersionNumberAttribute' in core assemblie(s).

Server stack trace:
at az.a.GetTypeInCoreAssemblies(String typeFullName)
at az.a.GetCSharpXamlForHtml5CompilerVersionNumberOrNull(String assemblySimpleName)
at System.Runtime.Remoting.Messaging.StackBuilderSink._PrivateProcessMessage(IntPtr md, Object[] args, Object server, Object[]& outArgs)
at System.Runtime.Remoting.Messaging.StackBuilderSink.SyncProcessMessage(IMessage msg)

Exception rethrown at [0]:
at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
at DotNetForHtml5.Compiler.Common.IMarshalledObject.GetCSharpXamlForHtml5CompilerVersionNumberOrNull(String assemblySimpleName)
at az.f(String A_0)
at i.a(String A_0, String A_1, String A_2, HashSet`1 A_3, Boolean A_4, a& A_5, String& A_6)
at i.a(ITaskItem[] A_0, String A_1, String A_2, String A_3, ILogger A_4, Boolean A_5)
at DotNetForHtml5.Compiler.AssemblyReferenceValidator.Execute()

Re: v1.2 Beta 7 released! [Download] (ThemeResources, more)

Posted: Tue Nov 06, 2018 12:44 am
by MichaelHughes
@Berend (and others)

I whole heartedly agree with your comment.

I have two applications running using this software. Both are rock solid.