类型“__IMessengerExtensions”已定义了一个名为“CreateAllMessagesRegistrator”的具有相同参数类型的成员

VS2022 .net6 WPF MvvmToolkit下出现这个问题

 

 解决办法：

Fix build when using source generators (#6534) by singhashish-wpf · Pull Request #6680 · dotnet/wpf (github.com)

https://github.com/dotnet/wpf/pull/6680