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I am trying to use a DispatcherTimer in system instead of a System.Timers.Timer in a C# class library targeting Net 6.0. I have googled and read MSDN article on how to do this and NONE of the solutions work.
DispatcherTimer is not recognized
System.Windows.Threading is not recognized
WIndows.UI.Xaml is not recognized
the following solution below also does not work
Windowsbase.dll does NOT exist in Visual Studio when I try to add the project to my Class library project. but I have added WIndowsBase_Core.STW
What do I need to do to use a DispatcherTimer in a Net 6.0 C# class library? this shouldn't be rocket science.
I think that System.Windows.Threading.Dispatcher is available if you create a "WPF Class Library" project.
If you want to use it in your "Class Library" project, then try opening the project XML (double-click it in Solution Explorer), replace <TargetFramework>net6.0</TargetFramework> with <TargetFramework>net6.0-windows</TargetFramework><UseWPF>true</UseWPF>, and save it.
The DispatcherTimer Class is specific to WinRT. See if the follow refence documentation helps.
I have installed C#/WinRT via NuGet, the project still has no clue what a DispatcherTimer is...
Did you add a using statement for Windows.UI.Xaml?
@Karen Payne MVP Yes, I tried using that, I noted in the OP that Windows.UI.Xaml is not recognized. It appears because my project is a class library that the Dispatcher thread and Dispatcher Invoke is not available. I have read multiple threads online to just add WIndowsBase.DLL or as the previous responses statue add WintRT, none of these suggestions make DispatcherTimer available in a Class library.
My class library shares a data structure that is used in the UI so without a dispatchertimer the app receives exceptions. I have rewritten a version of the code to avoid the execption however using a DispatcherTimer would be a better solution.
On microsoft reference source, you can reference the DispatcherTime.cs.
Click DispatcherTime.cs to view the source code.
Thank you for your response. I do not need sample code for DispatcherTerim.
What I trying to figure out is how to access the DispatcherTimer namespace in a class library.
Modifying the project XML file to enable WPF did the trick, thank you!