C# 缩略图简单方法

.net提供了简单的生成缩略图的方法       

using System.Drawing;
using System.Drawing.Imaging;
using System.Drawing.Drawing2D;

            bmp = new Bitmap(fullpath);
            bmp.GetThumbnailImage(150, 150, imageabortdel, IntPtr.Zero).Save(ms, System.Drawing.Imaging.ImageFormat.Png);
            bmp.Save(fullpath2, System.Drawing.Imaging.ImageFormat.Png);