WPF: Cannot locate resource 'resource/favicon.ico' on main Window Icon (simple question)

Question

I created my fist WPF app under .Net Core 3.1 in the latest VS 2019. Its just the stock Window when the project is first created and I want to set the Windows icon so I visited the project properties and clicked the link to add Resources. This creates Resources.resx under a Properties folder. I imported an existing favicon.ico into the resources and then tried setting the main Window's Icon="Resources/favicon.ico" resulting in an error for that property.

I've read that a "build action" is needed but I see no button or property for that.

How is the problem resolved? Thanks,

Answer 1

Hi TomHintz,

In Solution Explorer set the image file's Build Action property to Resource. Then clean the solution and rebuild it.

Best regards,
Zhanglong

Answer 2

Thank you for the answer. Actually, I had imported an existing item into the resource, but that does not copy the resource into the resource folder. I manually copied the resource and then your solution works.