resize image in asp.net
- by alina
I have this code to resize an image but the image doesn't look so good:
public Bitmap ProportionallyResizeBitmap(Bitmap src, int maxWidth, int maxHeight)
{
// original dimensions
int w = src.Width;
int h = src.Height;
// Longest and shortest dimension
int longestDimension = (w > h) ? w : h;
int shortestDimension = (w < h) ? w : h;
// propotionality
float factor = ((float)longestDimension) / shortestDimension;
// default width is greater than height
double newWidth = maxWidth;
double newHeight = maxWidth / factor;
// if height greater than width recalculate
if (w < h)
{
newWidth = maxHeight / factor;
newHeight = maxHeight;
}
// Create new Bitmap at new dimensions
Bitmap result = new Bitmap((int)newWidth, (int)newHeight);
using (Graphics g = Graphics.FromImage((System.Drawing.Image)result))
g.DrawImage(src, 0, 0, (int)newWidth, (int)newHeight);
return result;
}
