For those like me who didn't know this before ;)

[Lunatic3]

If you start your program with sub main (main not Main) then you will face strange behaviour. It's a known bug!

[Pirate]

I tried both ways without any bugs!!
VB became easier because its complier doesn't differentiate Case-state of code.No matter it's Lower or Upper Cases but C++ does.

Sub Main()
        MsgBox("From Main Sub")
    End Sub
 
    'Sub main()
    'MsgBox("from main sub")
    'End Sub

Dunno if you are doing something else!!!

[Edneeis]

What kind of strange behavior are we talking about?

[Lunatic3]

Try the following and see the result:

Sub main()
 
   Msgbox(Application.ProductName)
 
End sub

and then try with Sub Main().

[Pirate]

I've even tried MAIN , absolutely gives no difference.

?

[Lunatic3]

Well I dont know what you tried, but as far as i searched this is a known bug and happens in some methods and properties of System.Windows.Forms.Application class, and running before mentioned code with sub main not Main will resulat in the error:
object refrecnce not set to an instance ....

[Pirate]

'I created a class (love classes) and pasted
    'your code as follow :
    Sub Main()
        MsgBox(Application.ProductName)
    End Sub
 
    'and 
 
    'Sub main()
    '   MsgBox(Application.ProductName)
    'End Sub
 
    ' in a form I did this :
    'Dim mymain As New Class1()
    'mymain.main()
 
    'both gave the same results .
    '   but if I did this:
    '   Dim mymain As Class1
    '   mymain.main()
    'I get that stupid error so .
    'the error explain itself .i.e you are trying to use the
    'base class itself rather than dimming an object that holds 
    'its instance.
    'I did all this , just to assure  myself ,there is no such error.

[Lunatic3]

Come on man!

I said if you start your program with a Sub main in a module not calling that from a form when it is inside a class.

[Pirate]

that error happen when while instantiating subs or func. so I tried that.

[Pirate]

oh YOU ARE RIGHT. when I set the app startup from module and run the app , it fires the error.
sorry for that.