Demonstrates the use of a virtual property to override a base class property : Override Virtual « Class Interface « C# / C Sharp

1. C# / C Sharp
2. Class Interface
3. Override Virtual

Demonstrates the use of a virtual property to override a base class property

/*
C# Programming Tips & Techniques
by Charles Wright, Kris Jamsa

Publisher: Osborne/McGraw-Hill (December 28, 2001)
ISBN: 0072193794
*/

//
// VProp.cs -- Demonstrates the use of a virtual method to override
//             a base class method.
//
//             Compile this program with the following command line:
//                 C:>csc VProp.cs
namespace nsVirtual
{
    using System;
    
    public class VPropclsMain
    {
        static public void Main ()
        {
            clsBase Base = new clsBase();
            clsFirst First = new clsFirst();
            Base.SetString ("This should set the base class property");
            First.SetString ("This should set the derived class property");
            Console.WriteLine();
            Console.WriteLine (Base.GetString());
            Console.WriteLine (First.GetString());
        }
    }
    class clsBase
    {
  public void SetString (string str)
        {
            StrProp = str;
        }
        public string GetString ()
        {
            return (StrProp);
        }
        virtual protected string StrProp
        {
            get
            {
                Console.WriteLine ("Getting Base string");
                return (m_BaseString);
            }
            set
            {
                Console.WriteLine ("Setting Base string");
                m_BaseString = value;
            }
        }
        private string m_BaseString = "";
    }
    class clsFirst : clsBase
    {
        override protected string StrProp
        {
            get
            {
                Console.WriteLine ("Getting derived string");
                return (m_DerivedString);
            }
            set
            {
                Console.WriteLine ("Setting derived string");
                m_DerivedString = value;
            }
        }
        private string m_DerivedString = "";
   }
}

           
       

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