To view the image in your app, you would have to load the file content into an Image based class:
DirectoryInfo di = new DirectoryInfo(@"c:/inetpub/wwwroot/demos");
FileInfo[] rgFiles = di.GetFiles("*.gif");
Image i = Image.FromFile(rgFiles[0].FullName);
You can them display the image via a PictureBox or the Graphics.DrawImage method.