Simple.ImageResizer

Simple C# ImageResizer library using wpf classes

Demo: http://imageresizer.apphb.com/

Available on NuGet: PM> Install-Package Simple.ImageResizer

Please note that this library is not related to the http://imageresizing.net/ project

Usage:

<pre> ImageResizer.ImageResizer resizer = new ImageResizer.ImageResizer(@"c:\path\to\image.jpg"); // resize to 400 px, jpg quality 90 var byteArray1 = resizer.Resize(400, ImageEncoding.Jpg90); // resize to 400 px, height 200, ScaleToFill, png var byteArray2 = resizer.Resize(400, 200, true, ImageEncoding.Png); // resize to 400 px, height 200, ScaleToFit, gif var byteArray3 = resizer.Resize(400, 200, false, ImageEncoding.Gif); // save last resized image to file resizer.SaveToFile(@"c:\path\to\image_resized.gif"); </pre>

Or

<pre> public ActionResult Upload(HttpPostedFileBase file) { var imageResizer = new ImageResizer.ImageResizer(file.InputStream.ToByteArray()); imageResizer.Resize(800, ImageEncoding.Jpg100); imageResizer.SaveToFile(Path.Combine(Server.MapPath("~/upload"), file.FileName)); return View(); } </pre>

Now also with a MvcExtensions package making it super easy to add dynamic image resizing into your asp.net mvc site.

Step 1: PM> Install-Package Simple.ImageResizer.MvcExtensions

Step 2: Add a ImagesController. Notice the ImageResult class which inherits FileResult and lets you add a custom width and height in the constructor. Setting both height and width to 0 will skip resizing of the image. Note: Your app will need write permission to the image folder specified as it caches resized images on disk in a subfolder.

<pre> public class ImagesController : Controller { [OutputCache(VaryByParam = "*", Duration = 60 * 60 * 24 * 365)] public ImageResult Index(string filename, int w = 0, int h = 0) { string filepath = Path.Combine(Server.MapPath("~/images2"), filename); return new ImageResult(filepath, w, h); } } </pre>

Step 3: Add a custom route for images allowing requests to images to be handled by our controller action.

<pre> routes.MapRoute( "Image", "images/{filename}", new { controller = "Images", action = "Index", filename = "" } ); </pre>

Step 4: Add the following to web.config in the system.webserver section to allow calls to static files to be handled by the mvc pipeline.

<pre> &lt;modules runAllManagedModulesForAllRequests="true" /&gt; </pre>