C# Class for resizing images (using paint .net code)

We need a C# Class to resize a given image in several different sizes. The objective of this Class is to generate several different resolutions from a given image file. The source image will be in GIF and/or JPG. The application must be able identify and to treat both formats simultaneously (i.e., both image formats can be sent to the class as a parameter) Once called, this Class would have to create in a given directory as many different sizes as requested. **Important:** This class should simply use the same algorithm that Paint .NET 3.36 uses in its **Resize** function, using the “Best Quality?? Resampling options. (As far as I know, the Source coude for Paint .Net is freely available) Please, see the attached document for further details.