I added a new class to my project and got an error saying “Program.Main() has more than one entry”. Why?

Question

The problem is that after I added the new class, the error came up when I did build the solution. What can be wrong?

In Form1, I don’t have any code yet.

I jus

Answer 1

I experienced this issue after adding an xUnit test class to my .NET Core 2.1 project.

The following article gives a detailed explanation of why, and provided the answer that worked for me - here.

Basically, the compiler automatically generates a Main for the new class. You can provide a directive in your .csproj file to keep this from happening:

false

Add this to your section and recompile.