.NET Core或.NET5根据坐标裁剪图片

.NET Core或.NET5根据左上角坐标裁剪图片

需要在nuget中安装System.Drawing.Common

using System;
using System.Drawing;


namespace ConsoleApp_imgcat
{
    
    
    class Program
    {
    
    
        static void Main(string[] args)
        {
    
    
            //System.Drawing.Common   
            try
            {
    
    
                //方式一          
                //输入待裁剪原图
                Bitmap source = new Bitmap(@"D:\壁纸\5d1c6f42117cc.jpg");
                RectangleF rectangleF = new RectangleF(423, 576, 400, 400);            
                var newBitmap = source.Clone(rectangleF, System.Drawing.Imaging.PixelFormat.Format32bppRgb);
                //保存裁剪的图片
                newBitmap.Save(@$"d:\壁纸\5d1c6f42117cc_4.jpg");
                newBitmap.Dispose();
                source.Dispose();

                //方式二
                Bitmap outImg = new Bitmap(400, 400);
                Graphics g = Graphics.FromImage(outImg);
                //输入待裁剪原图
                Bitmap inputImg = new Bitmap(@"d:\壁纸\5d1c6f42117cc.jpg");
                //x=-764,y=-156，这里要设置为负值，开始截图的左上角坐标
                g.DrawImage(inputImg, -423, -576);
                //保存裁剪的图片
                outImg.Save(@"d:\壁纸\5d1c6f42117cc_5.jpg");
                g.Dispose();
                outImg.Dispose();
                inputImg.Dispose();
            }
            catch (Exception ex)
            {
    
    
                string msg = ex.Message;
                Console.WriteLine("异常：" + msg);
            }
            Console.WriteLine("Hello World!");
            //Console.ReadKey();
        }
    }
}