.Net GDI+缩放绘图

素材:9.JPG       图片尺寸为1200px * 800px

目的将9.JPG绘成600px * 400px的图片

代码如下:

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using System.IO; using System.Drawing; using System.Drawing.Drawing2D; using System.Drawing.Imaging;   public void PrintImage() {             //原图片尺寸1200*800             Bitmap img = new Bitmap("9.jpg");             Bitmap img2 = new Bitmap(600,400);               //设置分辨率             img2.SetResolution(600f, 600f);             //从img2画图             Graphics g = Graphics.FromImage(img2);             //将img2上的坐标(0,0)绘出img             g.DrawImage(img, new Point(0, 0));             //划出水平和垂直的分辨率             g.DrawString(img2.HorizontalResolution + "/" + img2.VerticalResolution, new Font("Tahoma",1.5f), Brushes.Black, new PointF(2, 2));             g.DrawString("www.ops.cc", new Font(FontFamily.GenericSansSerif, 1.5f), Brushes.Blue, new PointF(2,14));             g.Dispose();             img2.Dispose();             img.Dispose(); }