CSHARP

c# static meaning

In general, static means “associated with the class, not an instance”.
// Search c# static review for more detail

what does static mean in c#

In C#, static means something which cannot be instantiated. You cannot create an object of a static class and cannot access static members using an object. C# classes, variables, methods, properties, operators, events, and constructors can be defined as static using the static modifier keyword.

c# purpose of static

Static classes are just tools — they don’t need specific instances and they 
don’t store new information.

So you don't have to instantiate(create an object) to access it. 
Static like Math.PI.

static c#

(static) >> means that the method belongs to the Program class 
			and not an 'object' of the Program class.

c# static

public class MyClass
{
	//Instance variable to be automatically set to five
	public int instanceVar = 5;
    //Variable belonging to the type/class
    public static int typeVar = 10;
}
public class MainClass
{
  void Main()
  {
      //Field is accesible as it is a variable belonging to the type as a whole
      Console.WriteLine(MyClass.typeVar);
      //The following would throw an error, because the type isn't an instance
      //Console.WriteLine(MyClass.instanceVar)
      //Create an instance of the defined class
      MyClass instance = new MyClass();
      //Writes 5, because we told it to be set to 5 upon creation of the object
      Console.WriteLine(instance.instanceVar);
      instance.instanceVar += 22; //Add 22 to the instance's variable
      NyClass second = new MyClass(); //Create a second instance, named 'second'
      Console.WriteLine(instance.instanceVar);//27, unless i did my math wrong :/
      //The second instance has it's own variable separate from the first
      Console.WriteLine(second.instanceVar);//5
  }
}