Use of this

[creatorul]

Use this when you need to make difference between variables:

public class Form1: Form 
{ 
   private int _someInt; 


   private void anotherMethod(int _someInt) 
   { 
       this._someInt=_someInt;
 
   } 
... 
}

Use it when you need to emphazise the belonging to your class of that variable. I suggest to use it only when you need it ( to increase readability and decrease the amount of code), like the situation above.