Compare struct and class as value type and Reference type - CSharp Custom Type

CSharp examples for Custom Type:struct

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Description

Compare struct and class as value type and Reference type

Demo Code

using System;/*w  w w . j a  v a  2  s  .  c  om*/
//Create a value type
public struct Point {
   public int x;
   public int y;
}
//Create a Reference type
public class MyObject {
   public int i;
}
public class Pass {
   public static void Main( ) {
      int i = 100;
      Console.WriteLine("Value of i before PassByValue Method is {0}", i );
      PassByValue( i );
      Console.WriteLine("Value of i after PassByValue Method is {0}", i );

      Console.WriteLine("Value of i before PassByRef Method is {0}", i );
      PassByRef( ref i );
      Console.WriteLine("Value of i before PassByRef Method is {0}", i );

      //Create an the Point type
      Point p; p.x = 10; p.y = 15;
      Console.WriteLine("Value of p before PassByValue is x={0}, y={1}", p.x,p.y);
      PassByValue( p );
      Console.WriteLine("Value of p after PassByValue is x={0}, y={1}", p.x,p.y);

      Console.WriteLine("Value of p before PassByRef is x={0}, y={1}", p.x,p.y);
      PassByRef( ref p );
      Console.WriteLine("Value of p after PassByRef is x={0}, y={1}", p.x,p.y);

      //Create an object instance
      MyObject o = new MyObject( );
      o.i = 10;
      Console.WriteLine("Value of o.i before PassReferenceType is {0}", o.i );
      PassReferenceType( o );
      Console.WriteLine("Value of o.i after PassReferenceType is {0}", o.i );
   }
   public static void PassByValue( Point p )  {
      Console.WriteLine( "Value of Point.x = {0} : Point.y = {1}", p.x, p.y );
      p.x++; p.y++;
      Console.WriteLine( "New Value of Point.x = {0} : Point.y = {1}", p.x, p.y );
   }
   public static void PassByValue( int i ) {
      Console.WriteLine("Value of i = {0}", i );
      i++;
      Console.WriteLine("New Value of i = {0}", i );
   }
   public static void PassByRef( ref Point p ) {
      Console.WriteLine("Value of Point.x = {0} : Point.y = {1}", p.x, p.y );
      p.x++; p.y++;
      Console.WriteLine("New Value of Point.x = {0} : Point.y = {1}", p.x, p.y );
   }
   public static void PassByRef( ref int i ) {
      Console.WriteLine("Value of i = {0}", i );
      i++;
      Console.WriteLine("New Value of i = {0}", i );
   }
   public static void PassReferenceType( MyObject o ) {
      Console.WriteLine("Value of MyObject.i = {0}", o.i);
      o.i++;
      Console.WriteLine("New Value of MyObject.i = {0}", o.i);
   }
}

Result


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