public byte[] Create(Stream source, ImageSize desiredSize, string contentType)
{
Dictionary<string, ImageFormat> ImageFormats = new Dictionary<string, ImageFormat>();
ImageFormats.Add("image/png", ImageFormat.Png);
ImageFormats.Add("image/gif", ImageFormat.Gif);
ImageFormats.Add("image/jpeg", ImageFormat.Jpeg);
ImageFormats.Add("image/jpg", ImageFormat.Jpeg);
using (Image image = Image.FromStream(source))
{
ImageSize originalSize = new ImageSize
{
Height = image.Height,
Width = image.Width
};
ImageSize size3 = Resize(originalSize, desiredSize);
using (Bitmap bitmap = new Bitmap(size3.Width, size3.Height))
{
this.ScaleImage(image, bitmap);
using (MemoryStream stream = new MemoryStream())
{
bitmap.Save(stream, ImageFormats[contentType]);
return stream.ToArray();
}
}
}
}
public ImageSize Resize(ImageSize originalSize, ImageSize targetSize)
{
float num = ((float)originalSize.Width) / ((float)originalSize.Height);
int width = targetSize.Width;
int height = targetSize.Height;
if ((originalSize.Width > targetSize.Width) || (originalSize.Height > targetSize.Height))
{
if (num > 1f)
{
height = (int)(((float)targetSize.Height) / num);
}
else
{
width = (int)(targetSize.Width * num);
}
}
else
{
width = originalSize.Width;
height = originalSize.Height;
}
return new ImageSize { Width = Math.Max(width, 1), Height = Math.Max(height, 1) };
}
private FileContentResult CreateThumbnail(string physicalPath)
{
using (FileStream stream = System.IO.File.OpenRead(physicalPath))
{
ImageSize desiredSize = new ImageSize
{
Width = 80,
Height = 80
};
var type = Path.GetExtension(physicalPath);
type = type.Split('.')[1];
return base.File(Create(stream, desiredSize, "image/" + type.ToLower()), "image/" + type.ToLower());
}
}
public FileContentResult getThumbnail(string path,int width,int height)
{
string physicalPath = Server.MapPath(path);
using (FileStream stream = System.IO.File.OpenRead(physicalPath))
{
ImageSize desiredSize = new ImageSize
{
Width = width,
Height = height
};
var type = Path.GetExtension(physicalPath);
type = type.Split('.')[1];
return base.File(Create(stream, desiredSize, "image/" + type.ToLower()), "image/" + type.ToLower());
}
}
