Demonstrate the use of a nested class to contain data

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

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

//
// Nested.cs -- demonstrate the use of a nested class to contain data
//
//              Compile this program with the following command line
//                  C:>csc Nested.cs
//
namespace nsReadOnly
{
    using System;
    
    public class Nested
    {
        static double DegreeFactor = 1;
        static double MilFactor = 0.05625;
        static double RadianFactor = 57.29578;
        static public void Main ()
        {
            double angle = 90;
            double radius = 50;
            
            // Declare an instance of the nested class
            clsArea.clsData data = new clsArea.clsData (angle, radius,
                                                        DegreeFactor);
            clsArea InDegrees = new clsArea (data);

            // Change the values to mils
            data.Factor = MilFactor;
            data.Angle = angle * 17.77778;
            clsArea InMils = new clsArea (data);

            // Change the values to radians
            data.Angle = angle / 57.29578;
            data.Factor = RadianFactor;
            clsArea InRadians = new clsArea (data);

            Console.WriteLine ("Area of pie of {0,0:F3} degrees is {1,0:F1}",
                               InDegrees.Data.Angle, InDegrees.Area);
            Console.WriteLine ("Area of pie of {0,0:F3} radians is {1,0:F1}",
                               InRadians.Data.Angle, InRadians.Area);
            Console.WriteLine ("Area of pie of {0,0:F3} mils is {1,0:F1}",
                               InMils.Data.Angle, InMils.Area);
        }
    }
    class clsArea
    {
        public class clsData : ICloneable
        {
            public clsData (double angle, double radius, double factor)
            {
                m_Angle = angle;
                m_Radius = radius;
                m_Factor = factor / 57.29578;
            }
            public double Angle
            {
                get {return(m_Angle);}
                set {m_Angle = value;}
            }

            public double Radius
            {
                get {return(m_Radius);}
                set {m_Radius = value;}
            }
            public double Factor
            {
                get {return(m_Factor);}
                set {m_Factor = value / 57.29578;}
            }
            private double m_Angle = 0;
            private double m_Radius = 0;
            private double m_Factor = 1;
            public object Clone ()
            {
                clsData clone = new clsData (m_Angle, m_Radius,
                                             m_Factor * 57.29578);
                return (clone);
            }
        }

        public clsArea (clsData data)
        {
            // Clone the data object to get a copy for ourselves
            m_Data = (clsData) data.Clone();
        }

        public clsData Data
        {
            get {return (m_Data);}
        }

        private clsData m_Data;
        private const double pi = 3.14159;
        private const double radian = 57.29578;

        public double Area
        {
            get
            {
               return (m_Data.Radius * m_Data.Radius * pi
                       * m_Data.Angle * m_Data.Factor /  (2 * pi));
            }
        }
    }
}

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2.	Using Initializers
3.	A simple inventory example
4.	Declaring and Defining Classes
5.	Declaring Class Instances
6.	Assign value to class
7.	Declare class and use it
8.	Illustrates how to declare classes, object references, and create objects
9.	Illustrates how to assign default values to fields using initializers
10.	illustrates how to use a 'has a' relationship
11.	Illustrates nested classes
12.	Multiple constructors in a class definition
13.	Show name hiding in a derived class
14.	Illustrates hiding
15.	Variable in and out a class
16.	Create class
17.	A program that uses the Building class
18.	This program creates two Building objects
19.	Return an object
20.	Uses a class from Example16_3a.cs
21.	A Simple C# Class
22.	Persons Info class
23.	Message class
24.	Point class

Demonstrate the use of a nested class to contain data : Class Definition « Class Interface « C# / C Sharp

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