C# 图片截取、放大、缩小与保存

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); */ } }}