Does not contain a static 'main' method suitable for an entry point

Question

I began organizing my code to day into seperarate .cs files, and in order to allow the methods that work with the UI to continue to do so I would create the .cs code under t

Answer 1

If you are like me, then you might have started with a Class Library, and then switched this to a Console Application. If so, change this...

namespace ClassLibrary1
{
    public class Class1
    {
    }
}

To this...

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
        }
    }
}

Answer 2

If you don't have a file named Program.cs, just add a new Class and name it Program.cs.

Then paste this code:

 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Windows.Forms;

 namespace Sales {
     static class Program {

         /// <summary>
         /// The main entry point for the application.
         /// </summary>
         [STAThread]
         static void Main() {
             Application.EnableVisualStyles();
             Application.SetCompatibleTextRenderingDefault(false);
             Application.Run(new Form1());
         }
     }

 }

Answer 3

For me, the error was actually produced by "Feature 'async main' is not available in C# 7.0. Please use language version 7.1 or greater". This issue was resulting in the "Does not contain a static 'main' method suitable for an entry point" message in the Error List, but the Output window showed the "not available" error. To correct this, I changed the language version from 'C# latest minor version (default)' to 'C# latest minor version (latest)' under Advanced Build Settings.

Answer 4

Edit .csproj file

<OutputType>Library</OutputType>

cheers !

Answer 5

Change the Output Type under the Project > Properties to that of a “Class Library”. By default, this setting may have been set to a “Console Application”.

Answer 6

Check to see if the project is set as the "Startup Project"

Right click on the project and choose "Set as Startup Project" from the menu.