Resizing image proportionally in ASP.NET C# by specifying either Height or Width

Question

I need a code that will allow me to resize images, but with the following functionality:

1) resize image upon upload

2) Resize image proportionally by specifying either height or width.

Note:

• Should be done in ASP.NET C#

For example: The function should get the a width OR a height, and resize the image proportionally for the give height OR Width. Let's say that the image is 400(w)x100(h). I want to tell the function to resize the image to a specific height, let's say 80px. The function should resize the image proportionally while setting the image height to 80px and the width accordingly. Another option is ti tell the function the width, let's say 200px, and the function should resize the image to 200px width and set the height accordingly.

3) save the image to a specific location (path).

4) Function can work with uploaded image or by specifying an image path.

5) I want to be able to choose the image quality

6) Only need this for JPEG

Can somebody please help me out with this. Thanks.

Answer 1

Last day I found imageresizer and its great. and good API. Works Great. Downloaded from Visual studio 2010 Extension Manager: http://nuget.org/.

Easy Steps to download API in VS-2010:

1). Install Extension http://nuget.org/.



3). Find and Install ImageResizing

4).Then Code: (I m using here cropping. you can use any) Documentation on imageresizing.net

string uploadFolder = Server.MapPath(Request.ApplicationPath + "images/");
FileUpload1.SaveAs(uploadFolder + FileUpload1.FileName);


//The resizing settings can specify any of 30 commands.. See http://imageresizing.net for details.
ResizeSettings resizeCropSettings = new ResizeSettings("width=200&height=200&format=jpg&crop=auto");

//Generate a filename (GUIDs are safest).
string fileName = Path.Combine(uploadFolder, System.Guid.NewGuid().ToString());

//Let the image builder add the correct extension based on the output file type (which may differ).
fileName = ImageBuilder.Current.Build(uploadFolder + FileUpload1.FileName, fileName, resizeCropSettings, false, true);

Try!!! its very awsumm and easy to use. thanks.