How can I add a static 'Main' method suitable for an entry point?

[Iamhamidd]

I am getting an error on my code that says "Error CS5001
Program does not contain a static 'Main' method suitable for an entry point" I am coding in C# using Microsoft Visual Studio and .NET. This is my code. Link

    using System.IO;
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.Runtime;
using System;






class projectsummer
{
    [CommandMethod("OpenDrawing", CommandFlags.Session)]
   

    public static void OpenDrawing()

    

    {
        string strFileName = "C:\\DRAFT.dwg";
        DocumentCollection acDocMgr = Application.DocumentManager;

        if (File.Exists(strFileName))
        {
            acDocMgr.Open(strFileName, false);
        }
        else
        {
            acDocMgr.MdiActiveDocument.Editor.WriteMessage("File " + strFileName +
                                                            " does not exist.");
        }
    }
}

I am not sure how to go about this error. Thank you!

[Kent1Cooper]

[There is a >.NET-specific Forum< where you may find people better able to help you.]

[Ed__Jobe]

While you wait for a moderator to move this, you should take a look at your project type. It looks like you may have created an exe project. Only exe's require a Main sub. Projects for use in AutoCAD need to be made from the template called "Class (.NET Framework)".