STATIC KEYWORD

Static variable has value for a session life time means these are stored in application domain on iis.
Static variable are those variable that has a fix value for application and can assign by using static constructor and call by class name.

Static keyword denots that these variable intilized when any variable or method of class will call then all variable will be initilized and initilize only single time no matter what we call.

1. A constant or type declaration is implicitly a static member.
   

    2. A static member cannot be referenced through an instance. Instead, it is referenced                 through the type name.

1. While an instance of a class contains a separate copy of all instance fields of the class, there is only one copy of each static field.
2. It is not possible to use this to reference static methods or property accessors.
3. If the static keyword is applied to a class, all the members of the class must be static.
4. Classes, including static classes, may have static constructors. Static constructors are called at some point between when the program begins and the class is instantiated