// crudwork
// Copyright 2004 by Steve T. Pham (http://www.crudwork.com)
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with This program.  If not, see <http://www.gnu.org/licenses/>.

using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;

namespace crudwork.Utilities
{
  /// <summary>
  /// Image Utility
  /// </summary>
  public static class ImageUtil
  {
    #region Enumerators
    #endregion

    #region Fields
    private static int thumbWidth = 96;
    private static int thumbHeight = 96;
    #endregion

    #region Constructors
    #endregion

    #region Event Methods

    #region System Event Methods
    #endregion

    #region Application Event Methods
    #endregion

    #region Custom Event Methods
    #endregion

    #endregion

    #region Public Methods
    /// <summary>
    /// Create thumbnail from an image filename.
    /// </summary>
    /// <param name="filename"></param>
    /// <returns></returns>
    public static Image GetThumbnail(string filename)
    {
      return GetThumbnail(Image.FromFile(filename), thumbWidth, thumbHeight);
    }

    /// <summary>
    /// Create thumbnail with the given size from an image filename.
    /// </summary>
    /// <param name="filename"></param>
    /// <param name="width"></param>
    /// <param name="height"></param>
    /// <returns></returns>
    public static Image GetThumbnail(string filename, int width, int height)
    {
      return GetThumbnail(Image.FromFile(filename), width, height);
    }

    /// <summary>
    /// Create thumbnail from an Image type.
    /// </summary>
    /// <param name="image"></param>
    /// <returns></returns>
    public static Image GetThumbnail(Image image)
    {
      return GetThumbnail(image, thumbWidth, thumbHeight);
    }

    /// <summary>
    /// Create thumbnail with the given size for an Image type.
    /// </summary>
    /// <param name="image"></param>
    /// <param name="width"></param>
    /// <param name="height"></param>
    /// <returns></returns>
    public static Image GetThumbnail(Image image, int width, int height)
    {
      if (image == null)
        throw new ArgumentNullException("image");

      return image.GetThumbnailImage(width, height, null, new IntPtr());
    }

    /// <summary>
    /// Read the binary content from a file into a byte array.
    /// </summary>
    /// <param name="filename"></param>
    /// <returns></returns>
    public static byte[] FileToByteArray(string filename)
    {
      using (Stream fs = new FileStream(filename, FileMode.Open, FileAccess.Read))
      {
        byte[] imageData = new Byte[fs.Length];
        fs.Read(imageData, 0, imageData.Length);
        fs.Close();
        return imageData;
      }
    }

    /// <summary>
    /// Convert a byte array to Image type.
    /// </summary>
    /// <param name="value"></param>
    /// <returns></returns>
    public static Image ByteArrayToImage(byte[] value)
    {
      if ((value == null) || (value.Length == 0))
        throw new ArgumentNullException("value");

      return Image.FromStream(new MemoryStream(value));
    }

    /// <summary>
    /// Create a thumbnail image from an image filename.
    /// </summary>
    /// <param name="filename"></param>
    /// <returns></returns>
    public static byte[] CreateThumbnail(string filename)
    {
      using (MemoryStream s = new MemoryStream())
      using (Image image = Image.FromFile(filename).GetThumbnailImage(thumbWidth, thumbHeight, null, new IntPtr()))
      {
        image.Save(s, ImageFormat.Jpeg);
        return s.ToArray();
      }
    }

    /// <summary>
    /// Create a thumbnail image from a byte array, presumely from an image. 
    /// </summary>
    /// <param name="imageData"></param>
    /// <returns></returns>
    public static byte[] CreateThumbnail(byte[] imageData)
    {
      using (MemoryStream s = new MemoryStream())
      using (Image image = Image.FromStream(new MemoryStream(imageData)).GetThumbnailImage(thumbWidth, thumbHeight, null, new IntPtr()))
      {
        image.Save(s, ImageFormat.Jpeg);
        return s.ToArray();
      }
    }

    /// <summary>
    /// Convert an image to a byte array
    /// </summary>
    /// <param name="imageToConvert"></param>
    /// <param name="formatOfImage"></param>
    /// <returns></returns>
    public static byte[] ConvertImageToByteArray(Image imageToConvert, ImageFormat formatOfImage)
    {
      try
      {
        using (MemoryStream ms = new MemoryStream())
        {
          imageToConvert.Save(ms, formatOfImage);
          return ms.ToArray();
        }
      }
      catch (Exception ex)
      {
        
        throw;
      }
    }

    /// <summary>
    /// Return the ImageFormat type based on the file&#039;s extension
    /// </summary>
    /// <param name="filename"></param>
    /// <returns></returns>
    public static ImageFormat GetImageFormat(string filename)
    {
      string ext = new FileInfo(filename).Extension.Substring(1);
      switch (ext.ToUpper())
      {
        case "BMP":
          return ImageFormat.Bmp;
        //case "":
        //  return ImageFormat.Emf;
        //case "":
        //  return ImageFormat.Exif;
        case "GIF":
          return ImageFormat.Gif;
        case "ICO":
          return ImageFormat.Icon;
        case "JPEG":
        case "JPG":
        case "JPE":
          return ImageFormat.Jpeg;
        //case "":
        //  return ImageFormat.MemoryBmp;
        case "PNG":
          return ImageFormat.Png;
        case "TIF":
        case "TIFF":
          return ImageFormat.Tiff;
        case "WMF":
          return ImageFormat.Wmf;
        default:
          return null;

      }
    }
    #endregion

    #region Private Methods
    #endregion

    #region Protected Methods
    #endregion

    #region Properties
    #endregion

    #region Others
    #endregion
  }
}

   
     

   
  
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

public class Form1 : System.Windows.Forms.Form {
    private System.Windows.Forms.Label label1= new System.Windows.Forms.Label();
    private System.Windows.Forms.GroupBox groupBox1= new System.Windows.Forms.GroupBox();
    private System.Windows.Forms.RadioButton radioButton1= new System.Windows.Forms.RadioButton();
    private System.Windows.Forms.RadioButton radioButton2= new System.Windows.Forms.RadioButton();
    private System.Windows.Forms.RadioButton radioButton3= new System.Windows.Forms.RadioButton();
    private System.Windows.Forms.RadioButton radioButton4= new System.Windows.Forms.RadioButton();
    private System.Windows.Forms.Label label2= new System.Windows.Forms.Label();
    private System.Windows.Forms.CheckBox checkBox1= new System.Windows.Forms.CheckBox();

    Image im = null;
    Image im2 = null;
    public Form1() {
        this.groupBox1.SuspendLayout();
        this.SuspendLayout();
        this.label1.Location = new System.Drawing.Point(8, 16);
        this.label1.Size = new System.Drawing.Size(200, 240);
        this.groupBox1.Controls.AddRange(new System.Windows.Forms.Control[] {
                                          this.checkBox1,
                                          this.radioButton1,
                                          this.radioButton2,
                                          this.radioButton3,
                                          this.radioButton4});
        this.groupBox1.Location = new System.Drawing.Point(232, 48);
        this.groupBox1.Size = new System.Drawing.Size(72, 128);
        this.checkBox1.Location = new System.Drawing.Point(8, 32);
        this.checkBox1.Size = new System.Drawing.Size(56, 24);
        this.checkBox1.CheckedChanged += new System.EventHandler(this.checkBox1_CheckedChanged);
        this.radioButton1.Location = new System.Drawing.Point(8, 64);
        this.radioButton1.Size = new System.Drawing.Size(16, 24);
        this.radioButton2.Location = new System.Drawing.Point(40, 64);
        this.radioButton2.Size = new System.Drawing.Size(16, 24);
        this.radioButton3.Location = new System.Drawing.Point(8, 96);
        this.radioButton3.Size = new System.Drawing.Size(16, 24);
        this.radioButton4.Location = new System.Drawing.Point(40, 96);
        this.radioButton4.Size = new System.Drawing.Size(16, 24);

        this.label2.Location = new System.Drawing.Point(328, 16);
        this.label2.Size = new System.Drawing.Size(200, 240);

        this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
        this.ClientSize = new System.Drawing.Size(536, 266);
        this.Controls.AddRange(new System.Windows.Forms.Control[] {
                                      this.groupBox1,
                                      this.label1,
                                      this.label2});
        this.groupBox1.ResumeLayout(false);
        this.ResumeLayout(false);
        this.Text = "Zooming";
        this.label1.Text = "";
        this.groupBox1.Text = "Zoom";
        this.checkBox1.Text = "Paint";
        this.radioButton1.Checked = false;
        this.radioButton1.CheckedChanged += new System.EventHandler(this.radioButtons_CheckedChanged);
        this.radioButton2.CheckedChanged += new System.EventHandler(this.radioButtons_CheckedChanged);
        this.radioButton3.CheckedChanged += new System.EventHandler(this.radioButtons_CheckedChanged);
        this.radioButton4.CheckedChanged += new System.EventHandler(this.radioButtons_CheckedChanged);
    }

    [STAThread]
    static void Main() {
        Application.Run(new Form1());
    }
    protected override void OnPaint(PaintEventArgs e) { ImageZoom(); }
    private void checkBox1_CheckedChanged(object sender, System.EventArgs e) { ImageZoom(); }
    private void radioButtons_CheckedChanged(object sender, System.EventArgs e) { ImageZoom(); }
    protected void ImageZoom() {
        Graphics g1 = Graphics.FromHwnd(this.label1.Handle);
        Graphics g2 = Graphics.FromHwnd(this.label2.Handle);
        Rectangle rec;
        Rectangle recPart;

        if (this.checkBox1.Checked) {
            if (im == null) ReadImage();

            rec = new Rectangle(0, 0, label1.Width, label1.Height);
            g1.DrawImage(im, rec);

            recPart = new Rectangle(im.Width / 4, im.Height / 4, im.Width / 2, im.Height / 2);
            if (this.radioButton1.Checked)
                recPart = new Rectangle(0, 0, im.Width / 2, im.Height / 2);
            if (this.radioButton2.Checked)
                recPart = new Rectangle(im.Width / 2, 0, im.Width / 2, im.Height / 2);
            if (this.radioButton3.Checked)
                recPart = new Rectangle(0, im.Height / 2, im.Width / 2, im.Height / 2);
            if (this.radioButton4.Checked)
                recPart = new Rectangle(im.Width / 2, im.Height / 2, im.Width / 2, im.Height / 2);
            g2.DrawImage(im, rec, recPart, GraphicsUnit.Pixel);
        } else {
            Clear(g1);
            Clear(g2);
        }

        g1.Dispose(); g2.Dispose();
    }
    protected void ReadImage() {
        string path = "3.BMP";
        im = Image.FromFile(path);
        this.radioButton1.Enabled = true;
        this.radioButton2.Enabled = true;
        this.radioButton3.Enabled = true;
        this.radioButton4.Enabled = true;
    }
    protected void Clear(Graphics g) {
        g.Clear(this.BackColor);
        g.Dispose();
        im = null;
        im2 = null;
        this.radioButton1.Checked = false;
        this.radioButton2.Checked = false;
        this.radioButton3.Checked = false;
        this.radioButton4.Checked = false;

        this.radioButton1.Enabled = false;
        this.radioButton2.Enabled = false;
        this.radioButton3.Enabled = false;
        this.radioButton4.Enabled = false;
    }
}

   
     

   
  
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

using System.Net;
using System.IO;

public class Form1 : System.Windows.Forms.Form {
    [STAThread]
    static void Main() {
        Application.Run(new Form1());
    }
    protected override void OnPaint(System.Windows.Forms.PaintEventArgs e) {
        string p = "s.JPG";
        Image i = Image.FromFile(p);
        Image tn = i.GetThumbnailImage(50, 50, null, IntPtr.Zero);  // <=>(IntPtr)0
        e.Graphics.DrawImage(tn, 100, 0, tn.Width, tn.Height);

        e.Graphics.Dispose();
    }
}

   
     

   
  
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

public class Form1 : System.Windows.Forms.Form {
    private System.Windows.Forms.GroupBox groupBox1;
    private System.Windows.Forms.CheckBox checkBox1;
    private System.Windows.Forms.RadioButton radioButton1;

    Image im = null;
    Image im2 = null;
    private System.Windows.Forms.Label label1;
    private System.Windows.Forms.RadioButton radioButton2;
    private System.Windows.Forms.RadioButton radioButton3;

    public Form1() {
        this.groupBox1 = new System.Windows.Forms.GroupBox();
        this.radioButton1 = new System.Windows.Forms.RadioButton();
        this.checkBox1 = new System.Windows.Forms.CheckBox();
        this.label1 = new System.Windows.Forms.Label();
        this.radioButton2 = new System.Windows.Forms.RadioButton();
        this.radioButton3 = new System.Windows.Forms.RadioButton();
        this.groupBox1.SuspendLayout();
        this.SuspendLayout();

        this.groupBox1.Controls.AddRange(new System.Windows.Forms.Control[] {
                                          this.radioButton3,
                                          this.radioButton2,
                                          this.radioButton1,
                                          this.checkBox1});
        this.groupBox1.Location = new System.Drawing.Point(312, 64);
        this.groupBox1.Size = new System.Drawing.Size(248, 80);

        this.radioButton1.Location = new System.Drawing.Point(120, 16);
        this.radioButton1.Size = new System.Drawing.Size(112, 24);

        this.checkBox1.Location = new System.Drawing.Point(16, 16);
        this.checkBox1.CheckedChanged += new System.EventHandler(this.checkBox1_CheckedChanged);

        this.label1.Location = new System.Drawing.Point(8, 8);
        this.label1.Size = new System.Drawing.Size(304, 200);

        this.radioButton2.Location = new System.Drawing.Point(16, 48);
        this.radioButton3.Location = new System.Drawing.Point(120, 48);
        this.radioButton3.Size = new System.Drawing.Size(120, 24);

        this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
        this.ClientSize = new System.Drawing.Size(560, 214);
        this.Controls.AddRange(new System.Windows.Forms.Control[] {
                                      this.label1,
                                      this.groupBox1});
        this.groupBox1.ResumeLayout(false);
        this.ResumeLayout(false);
        this.radioButton1.Checked = false;
        this.label1.Text = "";
        this.groupBox1.Text = "RotateFlipType";
        this.checkBox1.Text = "Paint";
        this.radioButton1.Text = "Rotate180FlipY";
        this.radioButton2.Text = "Rotate180FlipX";
        this.radioButton3.Text = "Rotate180FlipNone";

        this.radioButton1.CheckedChanged += new System.EventHandler(this.radioButtons_CheckedChanged);
        this.radioButton2.CheckedChanged += new System.EventHandler(this.radioButtons_CheckedChanged);
        this.radioButton3.CheckedChanged += new System.EventHandler(this.radioButtons_CheckedChanged);


    }
    [STAThread]
    static void Main() {
        Application.Run(new Form1());
    }
    protected override void OnPaint(PaintEventArgs e) { RotateFlip(); }
    private void label1_Paint(object sender, System.Windows.Forms.PaintEventArgs e) { RotateFlip(); }
    private void checkBox1_CheckedChanged(object sender, System.EventArgs e) { RotateFlip(); }
    private void radioButtons_CheckedChanged(object sender, System.EventArgs e) { RotateFlip(); }
    protected void RotateFlip() {
        Graphics g = Graphics.FromHwnd(this.label1.Handle);
        Brush b = new SolidBrush(this.label1.BackColor);

        if (this.checkBox1.Checked) {
            if (im == null) ReadImage();
            Graphics g2 = Graphics.FromImage(im); 
            FontFamily ff = new FontFamily("Times New Roman");
            Font f = new Font(ff, 25, FontStyle.Bold);
            g2.DrawString("HIMALAYA", f, new SolidBrush(Color.Yellow), 170, 210);
            g2.Dispose();

            im2 = (Image)im.Clone();

            int w2 = label1.Width / 2, h2 = label1.Height / 2;
            g.DrawImage(im, 0, 0, w2, h2);

            if (this.radioButton1.Checked){
                im2.RotateFlip(RotateFlipType.Rotate180FlipY);
                g.DrawImage(im2, w2, 0, w2, h2);
            } else 
                g.FillRectangle(b, w2, 0, w2, h2);

            if (this.radioButton2.Checked) {
                im2.RotateFlip(RotateFlipType.Rotate180FlipX);
                g.DrawImage(im2, 0, h2, w2, h2);
            } else 
                g.FillRectangle(b, 0, h2, w2, h2);

            if (this.radioButton3.Checked) {
                im2.RotateFlip(RotateFlipType.Rotate180FlipNone);
                g.DrawImage(im2, w2, h2, w2, h2);
            } else 
                g.FillRectangle(b, w2, h2, w2, h2);
            im2.Dispose();
        } else Clear(g);

        b.Dispose(); g.Dispose();
    }
    protected void ReadImage() {
        string path = "a.bmp";
        im = Image.FromFile(path);
        this.radioButton1.Enabled = true;
        this.radioButton2.Enabled = true;
        this.radioButton3.Enabled = true;
    }
    protected void Clear(Graphics g) {
        g.Clear(this.BackColor);
        g.Dispose();
        im = null;
        im2 = null;
        this.radioButton1.Checked = false;
        this.radioButton2.Checked = false;
        this.radioButton3.Checked = false;
        this.radioButton1.Enabled = false;
        this.radioButton2.Enabled = false;
        this.radioButton3.Enabled = false;
    }

}

   
     

   
  


using System;
using System.Drawing;
using System.Windows.Forms;
   
class ScribbleWithBitmap: Form
{
     bool     bTracking;
     Point    ptLast;
     Bitmap   bitmap;
     Graphics grfxBm;
   
     public static void Main()
     {
          Application.Run(new ScribbleWithBitmap());
     }
     public ScribbleWithBitmap()
     {
          Size size = SystemInformation.PrimaryMonitorMaximizedWindowSize;
          bitmap = new Bitmap(size.Width, size.Height);
   
          grfxBm = Graphics.FromImage(bitmap);
          grfxBm.Clear(BackColor);
     }
     protected override void OnMouseDown(MouseEventArgs mea)
     {
          if (mea.Button != MouseButtons.Left)
               return;
   
          ptLast = new Point(mea.X, mea.Y);
          bTracking = true;
     }
     protected override void OnMouseMove(MouseEventArgs mea)
     {
          if (!bTracking)
               return;
   
          Point ptNew = new Point(mea.X, mea.Y);
          
          Pen pen = new Pen(ForeColor);
          Graphics grfx = CreateGraphics();
          grfx.DrawLine(pen, ptLast, ptNew);
          grfx.Dispose();
   
          grfxBm.DrawLine(pen, ptLast, ptNew);
   
          ptLast = ptNew;
     }
     protected override void OnMouseUp(MouseEventArgs mea)
     {
          bTracking = false;
     }
     protected override void OnPaint(PaintEventArgs pea)
     {
          Graphics grfx = pea.Graphics;
          grfx.DrawImage(bitmap, 0, 0, bitmap.Width, bitmap.Height);
     }
}

   
     

   
  
using System;
using System.Drawing;
using System.IO;
using System.Net;
using System.Windows.Forms;
   
class ImageFromWeb: Form
{
     Image image;
   
     public static void Main()
     {
          Application.Run(new ImageFromWeb());
     }
     public ImageFromWeb()
     {
          ResizeRedraw = true;
          WebRequest   webreq = WebRequest.Create("http://international.us.server12.fileserver.kutayzorlu.com/files/download/2017/01/1_uuid-04f7b0dd-dbeb-4b4c-b943-2f5f92486379_crc-2185242360.jpg");
          WebResponse  webres = webreq.GetResponse();
          Stream       stream = webres.GetResponseStream();
   
          image = Image.FromStream(stream);
          stream.Close();
     }
     protected override void OnPaint(PaintEventArgs pea)
     {
          DoPage(pea.Graphics, ForeColor,ClientSize.Width, ClientSize.Height);
     }     
     protected void DoPage(Graphics grfx, Color clr, int cx, int cy)
     {
          grfx.DrawImage(image, 0, 0);
     }
}

   
     

   
  


using System;
using System.Drawing;
using System.Windows.Forms;
   
class CenterImage: Form
{
     Image image = Image.FromFile("Color.jpg");
   
     public static void Main()
     {
          Application.Run(new CenterImage());
     }
     public CenterImage()
     {
          ResizeRedraw = true; 
     }
     protected override void OnPaint(PaintEventArgs pea)
     {
          DoPage(pea.Graphics, ForeColor,ClientSize.Width, ClientSize.Height);
     }     
     protected void DoPage(Graphics grfx, Color clr, int cx, int cy)
     {
          grfx.PageUnit = GraphicsUnit.Pixel;
          grfx.PageScale = 1;
   
          RectangleF rectf = grfx.VisibleClipBounds;
   
          float cxImage = grfx.DpiX * image.Width / 
                                             image.HorizontalResolution;
          float cyImage = grfx.DpiY * image.Height / 
                                             image.VerticalResolution;
   
          grfx.DrawImage(image, (rectf.Width  - cxImage) / 2, 
                                (rectf.Height - cyImage) / 2);
     }
}