无法从 WPF 项目中删除 Windows.Forms 参考

Question

I added <UseWindowsForms>true</UseWindowsForms> to my .NET 6.0 WPF project to use some dialog classes, and then removed it after deciding to use the WindowsAPICodePack instead. But the project is still behaving as if I were referencing System.Windows.Forms . Intellisense offers the Namespaces/Types, and System.Windows.Forms.Analyzers and System.Windows.Forms.Analyzers.CSharp show up in the Analyzers section of Solution Explorer.

However, it no longer shows up under the Frameworks section of Solution Explorer. The <ImplicitUsings> also stopped including the namespace.

How do I get rid of the DLL references? I've tried running "Remove unused references" and it didn't help.

Answer 1

After my test, the Forms reference can be deleted.Please check if the steps below are consistent with yours.

1.Delete all codes and references related to Forms in the project.

    using System.Windows.Forms;
    ...

    System.Windows.Forms.MessageBox.Show("hello");

2.Right-click the project and select Unload Project, then right-click the project and select Edit Project File.

3.Delete <UseWindowsForms>true</UseWindowsForms> and save the csproj file.

4.Right-click the project and select Reload Project,then rebuild the project.

5.You could see that all references to Forms in the Microsoft.WindowsDesktop.AppWPF directory have been deleted.