Is it possible to reference WinForms from Win UI 3 project?

[nikolayvpavlov]

The title says it all.

I tried by adding <useWindowsForms>true</useWindowsForms> in the proj file, but this cased the project to stop building on line InitializeComponents in the Window's partial class. Obviously the above breaks the build and the compiler cannot file the generated file.

So, is there a way to reference WinForms and use some of its classes in a WinUI 3 project?

[castorix]

Yes, by adding a reference to System.Windows.Forms.dll (+ other DLLs like System.Drawing.Common.dll or System.Resources.Extensions.dll, depending on what you need)
(from C:\Program Files (x86)\dotnet\shared\Microsoft.WindowsDesktop.App + version)

[KWodarczyk]

In my case, the project builds but as soon as i open page there references winforms .dll i get the following error.
[The system cannot find the file specified. File name: 'System.Windows.Forms,]

or
An attempt was made to load a program with an incorrect format. (0x8007000B)

[gautambjain]

May be related to 32bit / 64bit?