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using System;using System.IO;using System.Drawing;using System.Drawing.Imaging;namespace ConsoleApplication7{    class Program    {        static void Main(string[] args)        {            string imgsrc = @"C:\Users\Administrator\Desktop\a.jpg";            //Image image = Image.FromFile(imgsrc);            //image.Save(@"C:\Users\Administrator\Desktop\a1.png", ImageFormat.Png);//绝对路径            /* //图片截取一部分            Bitmap image = new Bitmap(imgsrc);            Bitmap image1 = new Bitmap(200,100);            int width = image.Width;            int height = image.Height;            Graphics g = Graphics.FromImage(image1);            Rectangle rect = new Rectangle(0, 0, 200, 100);            g.DrawImage(image,0,0,rect, GraphicsUnit.Pixel);            image1.Save(@"C:\Users\Administrator\Desktop\a1.png", ImageFormat.Png);            */            /* //图片的放大和缩小            Bitmap image = new Bitmap(imgsrc);            Bitmap image1 = new Bitmap(300, 300);            Graphics g = Graphics.FromImage(image1);            Rectangle rect = new Rectangle(0, 0, 300, 300);            g.DrawImage(image, rect);            image1.Save(@"C:\Users\Administrator\Desktop\a1.jpg", ImageFormat.Jpeg);            */        }    }}

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