C# Code To make thumbnails of full size images

Intriduction

  This Code use for to mkae thumbnailspf full size images..  


This is to written in fileupload code behind

if (FileUpload4.FileName != "") { string appPath = Request.PhysicalApplicationPath; path = appPath + "Images\\" + FileUpload4.FileName; path6 = "Images/Thumbnail/" + FileUpload4.FileName; FileUpload4.SaveAs(Server.MapPath("../Images/" + FileUpload4.FileName)); System.Drawing.Image ImageToSave = resizeImage(System.Drawing.Image.FromStream(FileUpload4.FileContent), new Size(150, 150)); // supply actual image to the function ImageToSave.Save(Server.MapPath(System.IO.Path.Combine("../Images/Thumbnail/", FileUpload4.FileName))); // the function returns a thumbnail which is saved here }

This is drawing function that is place below above code

private static System.Drawing.Image resizeImage(System.Drawing.Image imgToResize, Size size) { int sourceWidth = imgToResize.Width; int sourceHeight = imgToResize.Height; float nPercent = 0; float nPercentW = 0; float nPercentH = 0; nPercentW = ((float)size.Width / (float)sourceWidth); nPercentH = ((float)size.Height / (float)sourceHeight); if (nPercentH < nPercentW) nPercent = nPercentH; else nPercent = nPercentW; int destWidth = (int)(sourceWidth * nPercent); int destHeight = (int)(sourceHeight * nPercent); Bitmap b = new Bitmap(destWidth, destHeight); Graphics g = Graphics.FromImage((System.Drawing.Image)b); g.InterpolationMode = InterpolationMode.HighQualityBicubic; g.DrawImage(imgToResize, 0, 0, destWidth, destHeight); g.Dispose(); return (System.Drawing.Image)b; }

namespace to be included
using System.IO;
using System.Drawing;
using System.Drawing.Imaging;
using System.Drawing.Drawing2D;