ImageCrop

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using System.Drawing.Imaging;

namespace WindowsFormsApplication1

{

    public partial class imagecrop : Form

    {

        public imagecrop()

        {

            InitializeComponent();

        }

        private void btncrop_Click(object sender, EventArgs e)

        {

            Bitmap mybitmap;

            Bitmap mybitmapcropped;

            Graphics mygraphics;

            Rectangle rec = new Rectangle(0, 0, 250, 300);

            mybitmap=new Bitmap(@"E:\1.jpg");

            mybitmapcropped = new Bitmap(200, 200);

            mygraphics = Graphics.FromImage(mybitmapcropped);

            mygraphics.DrawImage(mybitmap, new Rectangle(0, 0, mybitmapcropped.Width, mybitmapcropped.Height),rec.Left,rec.Top,rec.Width,rec.Height,GraphicsUnit.Pixel);

            mybitmap.Dispose();

            mybitmapcropped.Save(@"E:\2.jpg",ImageFormat.Jpeg);

        }

    }

}