Question

How to declare and use conversions in C#

Answer 1

using System;

namespace ConsoleApplication1
{
    struct conversion_struct
    {
        private int pn;

        public conversion_struct(int n)
        {
            this.pn = n;
        }
        static public implicit operator conversion_struct(int n)
        {
            return new conversion_struct(n);
        }
        static public explicit operator int(conversion_struct cs)
        {
            return cs.pn;
        }
        static public implicit operator string(conversion_struct cs)
        {
            return "value is: " + cs.pn;
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                conversion_struct c_struct;

                c_struct = 30;

                Console.WriteLine((int)c_struct);

                Console.WriteLine(c_struct);

                short s = (short)c_struct;

                Console.WriteLine(s);
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
        }
    }
}

/*
run:
    
30
value is: 30
30
  
*/

 

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Answer 2

using System;

namespace ConsoleApplication1
{
    public class conversion_class
    {
        private int pn;

        public conversion_class(int n)
        {
            this.pn = n;
        }
        static public implicit operator conversion_class(int n)
        {
            return new conversion_class(n);
        }
        static public explicit operator int(conversion_class cs)
        {
            return cs.pn;
        }
        static public implicit operator string(conversion_class cs)
        {
            return "value is: " + cs.pn;
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                conversion_class c_struct;

                c_struct = 30;

                Console.WriteLine((int)c_struct);

                Console.WriteLine(c_struct);

                short s = (short)c_struct;

                Console.WriteLine(s);
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
        }
    }
}

/*
run:
     
30
value is: 30
30
   
*/

 

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