Main Method in C#

See following points,

1. Main() method is the starting point of a program.
   
   
2. Main() method is always "Static".
   
   
3. Main() should NOT be "Public". Default access specifier of Main() is Private.
   
   
4. Following are the acceptable signatures of Main() method,
   
   1. static void Main(string[] args){}  
   2.   
   3. static void Main(){}  
   4.   
   5. staticint Main(string[] args){}  
   6.   
   7. staticint Main(){}  
5. Main() method can have either of the two return types - void and int.
   
   
6. Main() method can either have input string arguments or none.
   
   
7. There can be only one entry point in a program. However, we can have multiple Main() in the same project. But you need to define the "Startup object" defining which is the single entry point.
   
   Sample Code:
   
   We have two classes,
   
   1. namespace ConsoleApplication2  
   2. {  
   3.     //Class 1  
   4.     public class Class1  
   5.     {  
   6.         static void Main(string[] args)  
   7.         {}  
   8.     }  
   9.     //Class 2  
   10.     public class Class2  
   11.     {  
   12.         static void Main(string[] arg)  
   13.         {}  
   14.     }  
   15. }  
   When you compile this program, you can see both classes listed as Startup objects in Property pages of the Project.
   
   You need to select one of the two.