How to generate image Thumb minimal coding - asp.net

Question

How to generate image as Thumb in simple way i think minimal coding on asp.net,
Then after how to save particular folder

Answer 1

I would not recommend to use the "Image.GetThumbnailImage" method because of the poor quality
(search "Image.GetThumbnailImage quality" on your favorite search engine...)
Here is a code snippet:
void GenerateThumbnail(string sourceImagePath, string destImagePath, int width, int height, System.Drawing.Imaging.ImageFormat destImageFormat)
{
using (var destImage = new System.Drawing.Bitmap(width, height))
{
using (var g = System.Drawing.Graphics.FromImage(destImage))
{
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
g.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.HighQuality;
using (var sourceImage = System.Drawing.Image.FromFile(sourceImagePath))
{
g.DrawImage(sourceImage, new System.Drawing.Rectangle(0, 0, width, height));
}
destImage.Save(destImagePath, System.Drawing.Imaging.ImageFormat.Jpeg);
}
}
}
OR - you can use Piczard (Piczard)
Here are some usage examples:
// 50% thumbnail (Jpeg image format)
var filter = new CodeCarvings.Piczard.ImageTransformation(50);
filter.SaveProcessedImageToFileSystem("~/MySourceImage.jpg", "~/MyDestImage.jpg");
// Fixed size thumbnail 400x200 (PNG image format)
var filter2 = new CodeCarvings.Piczard.FixedResizeConstraint(400, 200);
filter.SaveProcessedImageToFileSystem("~/MySourceImage2.jpg", "~/MyDestImage2.png");

Answer 2

I have tried like this so cool..!!,
public void ThumbGenerate(string sourcepath,string thumbsavepath, int width, int height)
{
Image image = Image.FromFile(sourcepath);
Image thumb = image.GetThumbnailImage(width, height, () => false, IntPtr.Zero);
thumb.Save(Path.ChangeExtension(thumbsavepath, "jpg"));
}
Note :You can change extension what you like something jpg,jpeg,png