获取源码路径

private static string GetFilePath([CallerFilePath] string path = null) 
   {
     return path;
   }
 
 //当程序所在路径
 string str67 = System.Environment.CurrentDirectory;
 
 //源码路径   
 var path = GetFilePath();
 var directory = Path.GetDirectoryName(path);
        

参考