Shanti C# - Rectangle and Point Class - Complete

Rectangle Class

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace RectangleClass
{
    public class Rectangle
    {
        //fields
        private int length = 0;
        private int width = 0;
        private Point corner = new Point(0,0);
        
        //properties
        public int Length
        {
            get { return length; }
            set { length=value; }
        }
        public int Width
        {
            get { return width; }
            set { width = value; }
        }
        public Point Corner
        {
            get { return corner; }
            set { corner = value; }
        }
        
        //constructors
        public Rectangle()
        {
        }
        public Rectangle(int _length, int _width, Point _corner)
        {
            length = _length;
            width = _width;
            corner = _corner;
        }

        //methods
        public int getArea()
        {
            return length * width;
        }

        public int getPerimeter()
        {
            return (length + width) * 2;
        }

        public void increaseLength(int _lengthIncrease)
        {
            length = length + _lengthIncrease;
        }

        public void increaseWidth(int _widthIncrease)
        {
            width = width + _widthIncrease;
        }

        public string getCenter()
        {
            corner.setPoint(length / 2, width / 2);
            return corner.ToString();
        }

        public string getTopRight()
        {
            corner.setPoint(length, 0);
            return corner.ToString();
        }

        public string getBottomLeft()
        {
            corner.setPoint(0, width);
            return corner.ToString();
        }

        public string getBottomRight()
        {
            corner.setPoint(length, width);
            return corner.ToString();
        }

        public string getAllPoints()
        {
            string sAllPoints = "";
            sAllPoints = "Center = " + getCenter() + "\n" +
                "Top Right = " + getTopRight() + "\n" +
                "Bottom Left = " + getBottomLeft() + "\n" +
                "Bottom Right = " + getBottomRight();

            return sAllPoints;
            
        }
    }
}

Point Class (Used to override the ToString() function) - optional

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace RectangleClass
{
    public class Point
    {
        //fields
        private int x, y;

        // Default constructor:
        public Point()
        {
            x = 0;
            y = 0;
        }
        
        // A constructor with two arguments:
        public Point(int x, int y)
        {
            this.x = x;
            this.y = y;
        }

        // Override the ToString method:
        public override string ToString()
        {
            return (String.Format("({0},{1})", x, y));
        }

        public void setPoint(int _x, int _y)
        {
            this.x = _x;
            this.y = _y;
        }
    }

}

Form Coding

Rectangle myRec1 = new Rectangle(0, 0, new Point());

        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void btnGetLength_Click(object sender, EventArgs e)
        {           
            CheckFields();
            MessageBox.Show("Length is " + myRec1.Length);
        }

        private void btnGetWidth_Click(object sender, EventArgs e)
        {
            CheckFields();
            MessageBox.Show("Width is " + myRec1.Width);
        }

        private void btnArea_Click(object sender, EventArgs e)
        {
            CheckFields();
            MessageBox.Show("Area is " + myRec1.getArea());
        }

        private void btnPerimeter_Click(object sender, EventArgs e)
        {
            CheckFields();
            MessageBox.Show("Area is " + myRec1.getPerimeter());
        }

        private void CheckFields()
        {
            myRec1.Length = 0; 
            myRec1.Width = 0;

            if (txtLengthInc.Text != "")
                myRec1.increaseLength(int.Parse(txtLengthInc.Text));
            if (txtWidthInc.Text != "")
                myRec1.increaseWidth(int.Parse(txtWidthInc.Text));

            if (txtLength.Text != "")
                myRec1.Length = myRec1.Length + int.Parse(txtLength.Text);
            if (txtWidth.Text != "")
                myRec1.Width = myRec1.Width + int.Parse(txtWidth.Text);

        }

        private void btnCenter_Click(object sender, EventArgs e)
        {
            CheckFields();

            MessageBox.Show ("Center : " + myRec1.getCenter());
        }

        private void btnTopRight_Click(object sender, EventArgs e)
        {
            CheckFields();

            MessageBox.Show("Top Right : " + myRec1.getTopRight());
        }

        private void btnBottomLeft_Click(object sender, EventArgs e)
        {
            CheckFields();

            MessageBox.Show("Bottom Left : " + myRec1.getBottomLeft ());
        }

        private void btnButtonRight_Click(object sender, EventArgs e)
        {
            CheckFields();

            MessageBox.Show("Bottom Right : " + myRec1.getBottomRight());
        }

        private void btnAllPoints_Click(object sender, EventArgs e)
        {
            CheckFields();

            MessageBox.Show(myRec1.getAllPoints());
        }