Hello!
How can I resize an image on server that I just uploaded? I using C# with .NET Framework 3.5 SP1.
Thanks!
Hello!
How can I resize an image on server that I just uploaded? I using C# with .NET Framework 3.5 SP1.
Thanks!
Plz check this thread and get code from there from my answer.
Code:
System.Drawing.Bitmap bmpOut = new System.Drawing.Bitmap(NewWidth, NewHeight);
System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bmpOut);
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
g.FillRectangle(System.Drawing.Brushes.White, 0, 0, NewWidth, NewHeight);
g.DrawImage(new System.Drawing.Bitmap(fupProduct.PostedFile.InputStream), 0, 0, NewWidth, NewHeight);
MemoryStream stream = new MemoryStream();
switch (fupProduct.FileName.Substring(fupProduct.FileName.IndexOf('.') + 1).ToLower())
{
case "jpg":
bmpOut.Save(stream, System.Drawing.Imaging.ImageFormat.Jpeg);
break;
case "jpeg":
bmpOut.Save(stream, System.Drawing.Imaging.ImageFormat.Jpeg);
break;
case "tiff":
bmpOut.Save(stream, System.Drawing.Imaging.ImageFormat.Tiff);
break;
case "png":
bmpOut.Save(stream, System.Drawing.Imaging.ImageFormat.Png);
break;
case "gif":
bmpOut.Save(stream, System.Drawing.Imaging.ImageFormat.Gif);
break;
}
String saveImagePath = Server.MapPath("../") + "Images/Thumbnail/" + fupProduct.FileName.Substring(fupProduct.FileName.IndexOf('.'));
bmpOut.Save(saveImagePath);
Have you tried this?
public Image resize( Image img, int width, int height )
{
Bitmap b = new Bitmap( width, height ) ;
Graphics g = Graphics.FromImage( (Image ) b ) ;
g.DrawImage( img, 0, 0, width, height ) ;
g.Dispose() ;
return (Image ) b ;
}
the snippet I always use:
var target = new Bitmap(size.Width, size.Height, PixelFormat.Format24bppRgb);
target.SetResolution(source.HorizontalResolution,
source.VerticalResolution);
using (var graphics = Graphics.FromImage(target))
{
graphics.Clear(Color.White);
graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
graphics.DrawImage(source,
new Rectangle(destX, destY, destWidth, destHeight),
new Rectangle(sourceX, sourceY, source.Width, source.Height),
GraphicsUnit.Pixel);
}
return target;
Try the following method:
public string ResizeImageAndSave(int Width, int Height, string imageUrl, string destPath)
{
System.Drawing.Image fullSizeImg = System.Drawing.Image.FromFile(imageUrl);
double widthRatio = (double)fullSizeImg.Width / (double)Width;
double heightRatio = (double)fullSizeImg.Height / (double)Height;
double ratio = Math.Max(widthRatio, heightRatio);
int newWidth = (int)(fullSizeImg.Width / ratio);
int newHeight = (int)(fullSizeImg.Height / ratio);
//System.Drawing.Image.GetThumbnailImageAbort dummyCallBack = new System.Drawing.Image.GetThumbnailImageAbort(ThumbnailCallback);
System.Drawing.Image thumbNailImg = fullSizeImg.GetThumbnailImage(newWidth, newHeight, new System.Drawing.Image.GetThumbnailImageAbort(ThumbnailCallback), IntPtr.Zero);
//DateTime MyDate = DateTime.Now;
//String MyString = MyDate.ToString("ddMMyyhhmmss") + imageUrl.Substring(imageUrl.LastIndexOf("."));
thumbNailImg.Save(destPath, ImageFormat.Jpeg);
thumbNailImg.Dispose();
return "";
}
public bool ThumbnailCallback() { return false; }