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C# / CSharp Tutorial » Class » static method 
7.45.1.Use static

There are several restrictions that apply to static methods:

  1. A static method does not have a this reference.
  2. A static method can directly call only other static methods.
  3. A static method cannot directly call an instance method of its class.
  4. A static method must directly access only static data.
  5. You can't directly access a non-static variable from within a static method.
  6. You can't directly call a non-static method from within a static method.
using System; 
 
class StaticDemo 
  // a static variable 
  public static int val = 100;  
 
  // a static method 
  public static int valDiv2() { 
    return val/2
  

 
class MainClass 
  public static void Main() { 
 
    Console.WriteLine("Initial value of StaticDemo.val is " 
                      + StaticDemo.val)
 
    StaticDemo.val = 8
    Console.WriteLine("StaticDemo.val is " + StaticDemo.val)
    Console.WriteLine("StaticDemo.valDiv2(): " 
                       StaticDemo.valDiv2())
  
}
Initial value of StaticDemo.val is 100
StaticDemo.val is 8
StaticDemo.valDiv2(): 4
7.45.static method
7.45.1.Use static
7.45.2.Static Member Functions
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