GDI Operation in Picture Box

GDI Operation in Picture Box 

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Drawing.Drawing2D;

using System.Linq;

using System.Text;

using System.Windows.Forms;

namespace WindowsFormsApplication2

{

    public partial class Form1 : Form

    {

        Graphics g;

        public Form1()

        {

            InitializeComponent();

        }

        private void button1_Click(object sender, EventArgs e)

        {

            OpenFileDialog opndlg = new OpenFileDialog();

            opndlg.Filter = "Image Files(*.jpg; *.jpeg; *.gif; *.bmp)|*.jpg; *.jpeg; *.gif; *.bmp";

            if (opndlg.ShowDialog() == DialogResult.OK)

            {

                pictureBox1.Image = new Bitmap(opndlg.FileName);

                this.Text = opndlg.FileName;

            }

        }

        private void button2_Click(object sender, EventArgs e)

        {

           

            g = pictureBox1.CreateGraphics();

            Pen pen1 = new Pen(new SolidBrush(Color.Red),2);

            g.DrawLine(pen1, 250, 50, 400, 200);

        }

       

       

        private void Form1_Load(object sender, EventArgs e)

        {

        }

        private void button8_Click(object sender, EventArgs e)

        {

            pictureBox1.Refresh();

        }

        private void button7_Click(object sender, EventArgs e)

        {

            System.Drawing.Point[] p = new System.Drawing.Point[6];

            p[0].X = 0;

            p[0].Y = 0;

            p[1].X = 53;

            p[1].Y = 111;

            p[2].X = 114;

            p[2].Y = 86;

            p[3].X = 34;

            p[3].Y = 34;

            p[4].X = 165;

            p[4].Y = 7;

            g = pictureBox1.CreateGraphics();

            Pen pen1 = new Pen(new SolidBrush(Color.Red), 2);

            g.DrawPolygon(pen1, p);

        }

        private void button6_Click(object sender, EventArgs e)

        {

            g = pictureBox1.CreateGraphics();

            Pen pen1 = new Pen(new SolidBrush(Color.Red), 2);

            g.DrawPie(pen1, 50, 50, 150, 150, 0, 170);

        }

        private void button5_Click(object sender, EventArgs e)

        {

            g = pictureBox1.CreateGraphics();

            Pen pen1 = new Pen(new SolidBrush(Color.Red), 2);

            g.DrawArc(pen1, 150, 100, 150, 200, 150, 160);

        }

        private void button4_Click(object sender, EventArgs e)

        {

            g = pictureBox1.CreateGraphics();

            Pen pen1 = new Pen(new SolidBrush(Color.Red), 2);

            g.DrawRectangle(pen1, 30, 30, 50, 60);

        }

        private void button3_Click(object sender, EventArgs e)

        {

            g = pictureBox1.CreateGraphics();

            Pen pen1 = new Pen(new SolidBrush(Color.Red), 2);

            g.DrawEllipse(pen1, 50, 50, 100, 150);

        }

       

    }

}