Global Variable

Question

I want to define a Global Variable that all forms or classes know this variable without doing "new" in every class where I want to use this variable.
How can I do it?
Thanking you in advance

Carlos Sanchez · Answer

Thank You Binary Ange and Shayer009
This was really useful

Tanvir Huda · Answer

yeah u can do that just declaring it static
say in form1
declare it
public static int i=5;
now from other form use it using
form1.i ;

Garbage · Answer

Do you mean a static variable?
public static int myInt = 0;
public static string myString = string.Empty;