C#

public partial class GetInfo : ServiceBase
    {
    public ServiceName()
        {
        InitializeComponent();
        //write service start to event log - this works
        }
    static AutoResetEvent appsignal, syssignal, secsignal;

        public static void Main()// this of course causes a build error that the project has more than one entry point defined as program.cs contains the entry point
        {   

class A
{
  struct MyStruct
  {};

  public MyStruct func()
  {
    MyStruct struc = new MyStruct();
    // did some coding here
    return struc;
  }
}

class B
{
  struct MyStruct
  {};

  A = new A();
  MyStruct result = new MyStruct();
  result = A.func(); // here i get error ... 
}