Crop an Image Coding: How to make crop tool using c# sharp programming.

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Video tutorial for crop tool https://youtu.be/7IR6J8Kw8cE
9

Here is the source code for program of image crop in C sharp.➠➡➧➤

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace crop_tool_pro
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            //Load image
            Bitmap bmp = new Bitmap("C:\\Users\\Public\\Pictures\\Sample Pictures\\Koala.jpg");
            pictureBox1.SizeMode = PictureBoxSizeMode.StretchImage;
            pictureBox1.Image = (Image)bmp;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            //here we declare mouse event handlers

            pictureBox1.MouseDown += new MouseEventHandler(pictureBox1_MouseDown);

            pictureBox1.MouseMove += new MouseEventHandler(pictureBox1_MouseMove);

            pictureBox1.MouseEnter += new EventHandler(pictureBox1_MouseEnter);
            Controls.Add(pictureBox1);
        }

        //declare some variable for crop coordinates
        int crpX,crpY,rectW,rectH;
        // Declare crop pen for cropping image
        public Pen crpPen = new Pen(Color.White);
        private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
        {
            base.OnMouseDown(e);

            if (e.Button == System.Windows.Forms.MouseButtons.Left)
            {
                Cursor = Cursors.Cross;
                crpPen.DashStyle = System.Drawing.Drawing2D.DashStyle.Dot;
                // set initial x,y co ordinates for crop rectangle
                //this is where we firstly click on image
                crpX = e.X;
                crpY = e.Y;

            }
        }

        private void button2_Click(object sender, EventArgs e)
        {
            label2.Text = "Dimensions :" + rectW + "," + rectH;
            Cursor = Cursors.Default;
            //Now we will draw the cropped image into pictureBox2
            Bitmap bmp2 = new Bitmap(pictureBox1.Width, pictureBox1.Height);
            pictureBox1.DrawToBitmap(bmp2, pictureBox1.ClientRectangle);

            Bitmap crpImg = new Bitmap(rectW, rectH);

            for( int i = 0; i < rectW; i++)
            {
                for(int y = 0; y < rectH; y++)
                {
                    Color pxlclr = bmp2.GetPixel(crpX + i, crpY + y);
                    crpImg.SetPixel(i, y, pxlclr);
                }
            }

            pictureBox2.Image = (Image)crpImg;
            pictureBox2.SizeMode = PictureBoxSizeMode.CenterImage;

        }

        private void pictureBox1_MouseEnter(object sender, EventArgs e)
        {
            base.OnMouseEnter(e);
            Cursor = Cursors.Cross;
        }

        private void pictureBox1_MouseMove(object sender, MouseEventArgs e)
        {
            base.OnMouseMove(e);
            if (e.Button == System.Windows.Forms.MouseButtons.Left)
            {
                pictureBox1.Refresh();
                //set width and height for crop rectangle.
                rectW = e.X - crpX;
                rectH = e.Y - crpY;
                Graphics g = pictureBox1.CreateGraphics();
                g.DrawRectangle(crpPen, crpX, crpY, rectW, rectH);
                g.Dispose();
            }
        }
        protected override void OnMouseEnter(EventArgs e)
        {
            base.OnMouseEnter(e);
            Cursor = Cursors.Default;
        }



    }

}