Create Thumbnail Image : File Util « File Stream « C# / C Sharp

Home
C# / C Sharp
1.2D Graphics
2.Class Interface
3.Collections Data Structure
4.Components
5.Data Types
6.Database ADO.net
7.Design Patterns
8.Development Class
9.Event
10.File Stream
11.Generics
12.GUI Windows Form
13.Language Basics
14.LINQ
15.Network
16.Office
17.Reflection
18.Regular Expressions
19.Security
20.Services Event
21.Thread
22.Web Services
23.Windows
24.Windows Presentation Foundation
25.XML
26.XML LINQ
C# / C Sharp by API
C# / CSharp Tutorial
C# / CSharp Open Source
C# / C Sharp » File Stream » File UtilScreenshots 
Create Thumbnail Image
 
///////////////////////////////////////////////////////////////////////////////////////////////
//
//    This File is Part of the CallButler Open Source PBX (http://www.codeplex.com/callbutler
//
//    Copyright (c) 2005-2008, Jim Heising
//    All rights reserved.
//
//    Redistribution and use in source and binary forms, with or without modification,
//    are permitted provided that the following conditions are met:
//
//    * Redistributions of source code must retain the above copyright notice,
//      this list of conditions and the following disclaimer.
//
//    * Redistributions in binary form must reproduce the above copyright notice,
//      this list of conditions and the following disclaimer in the documentation and/or
//      other materials provided with the distribution.
//
//    * Neither the name of Jim Heising nor the names of its contributors may be
//      used to endorse or promote products derived from this software without specific prior
//      written permission.
//
//    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
//    ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
//    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
//    IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
//    INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
//    NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
//    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
//    WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
//    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
//    POSSIBILITY OF SUCH DAMAGE.
//
///////////////////////////////////////////////////////////////////////////////////////////////

using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.IO;

namespace WOSI.Utilities
{
    public class ImageUtils
    {
        public static Image CreateThumbnailImage(int width, int height, Image image, bool center)
        {
            // Create our new image
            Bitmap newImage = new Bitmap(width, height);

            using (Graphics g = Graphics.FromImage(newImage))
            {
                g.InterpolationMode = InterpolationMode.HighQualityBicubic;

                if (center && image.Width != image.Height)
                {
                    Rectangle srcRect = new Rectangle();

                    if (image.Width > image.Height)
                    {
                        srcRect.Width = image.Height;
                        srcRect.Height = image.Height;
                        srcRect.X = (image.Width - image.Height2;
                        srcRect.Y = 0;
                    }
                    else
                    {
                        srcRect.Width = image.Width;
                        srcRect.Height = image.Width;
                        srcRect.Y = (image.Height - image.Width2;
                        srcRect.X = 0;
                    }

                    g.DrawImage(image, new Rectangle(00, newImage.Width, newImage.Height), srcRect.X, srcRect.Y, srcRect.Width, srcRect.Height, GraphicsUnit.Pixel);
                }
                else
                {
                    g.DrawImage(image, 00, width, height);
                }
            }

            return newImage;
        }

        public static Image CreateThumbnailImage(int size, Image image, bool center)
        {
            return CreateThumbnailImage(size, size, image, center);
        }

        public static Image GetImageFromBytes(byte[] imageBytes)
        {
            try
            {
                using (MemoryStream ms = new MemoryStream(imageBytes))
                {
                    Image image = Image.FromStream(ms);

                    return image;
                }
            }
            catch
            {
                return null;
            }
        }

        public static byte[] GetImageBytes(Image image, ImageFormat format)
        {
            byte[] imageBytes;

            try
            {
                using (MemoryStream ms = new MemoryStream())
                {
                    image.Save(ms, format);
                    imageBytes = ms.ToArray();

                    return imageBytes;
                }
            }
            catch
            {
                return null;
            }
        }
    }
}

   
  
Related examples in the same category
1.Returns a human-readable version of the file size (original is in bytes).
2.Compares the content of 2 files
3.Copy file from source to destination
4.Clean a directory without deleting it
5.Implements the same behaviour as the "touch" utility on Unix.
6.Gets information about the files in a directory and puts it in an array of strings.
7.Checks if the giving File exists, and returns its length
8.Read the content of the text file.
9.Returns an array of abstract pathnames representing the files and directories of the specified path.
10.Get all the files that matches a wildcard pattern, eg. (*.tmp)
11.Tests if the specified file is newer than the reference file.
12.Returns true if the file specified by the pathname is a hidden file.
13.Checks if a file have write permissions
14.Remove a file or similar files if wildcard is included.
15.Sets the read-only property of the file to true.
16.Delete a file if exist
17.Get File SystemInfo
18.Saves a file
19.Renames a file
20.Determines if a directory exists
21.Deletes files newer than the specified date
22.Compares 2 files and determines if they are the same or not
23.Saves a file to an FTP server
24.Make file writable and copy
25.Create Temp File
26.Write File methods
27.Append File methods
28.Copy a file to a different filename, with cleaning null characters.
29.Read the given filename and yield return a string
30.Get Files / Get Folders methods
31.return true if the filename has the given attribute set
32.Copy from one file to another file
33.Get a 32x32 icon for a given file
34.Create Thumbnail
35.removes invalid charactes from filenames, like the slash and backslash
36.Removes invalid file name characters from the specified string.
37.Append a suffix (such as a date) to the name of the file.
38.Copy one folder to another folder
www.java2java.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.