Readonly and const : readonly « Class « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. Class
3. readonly

public class MyClass
{
   public MyClass()
   {
      this.y = 4;
      this.y = 6;

      SetField( ref this.y );
   }

   private void SetField( ref int val )
   {
      val = 8;
   }

   public readonly int x = 123;
   public readonly int y;
   public const     int z = 555;

}

public class MainClass{
   static void Main()
   {
      MyClass obj = new MyClass();

      System.Console.WriteLine( "x = {0}, y = {1}, z = {2}",
                                obj.x, obj.y, MyClass.z );
   }

}

x = 123, y = 8, z = 555