.NET Core全屏截图，C#全屏截图

.NET Core全屏截图，C#全屏截图

使用框架：

• WPF
• .NET 8

using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Imaging;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Runtime.InteropServices;
using System.IO;

namespace WpfAppYolo11_test1.Tool
{
    /// 

    /// 屏幕全屏截图
    /// 
    public class ScrentCapter
    {
        [DllImport("User32.dll", EntryPoint = "GetDC")]
        private extern static IntPtr GetDC(IntPtr hWnd);


        [DllImport("gdi32.dll")]
        public static extern int GetDeviceCaps(IntPtr hdc, int nIndex);

        const int DESKTOPVERTRES = 117;
        const int DESKTOPHORZRES = 118;

        /// 

        /// 截取电脑全屏图片
        /// 
        public static string Screenshot()
        {
            // 获取屏幕的尺寸
            IntPtr hdc = GetDC(IntPtr.Zero);
            //屏幕宽度
            int width = GetDeviceCaps(hdc, DESKTOPHORZRES);
            //屏幕高度
            int height = GetDeviceCaps(hdc, DESKTOPVERTRES);

            System.Drawing.Size size = new System.Drawing.Size()
            {
                Width = width,
                Height = height
            };
            string filePath = string.Empty;
            // 创建一个Bitmap对象，用于存储屏幕截图
            using (Bitmap bitmap = new Bitmap(width, height))
            {
                // 创建一个Graphics对象，用于绘制到Bitmap上
                using (Graphics g = Graphics.FromImage(bitmap))
                {
                    // 截取屏幕内容到Graphics对象中
                    g.CopyFromScreen(0, 0, 0, 0, size);
                }

                // 保存Bitmap为图片文件
                string dir = Path.Combine(AppContext.BaseDirectory, "screen");
                if (!Directory.Exists(dir))
                {
                    Directory.CreateDirectory(dir);
                }
                filePath =Path.Combine(dir, $"screen{DateTime.Now.ToString("yyyyMMdd_HHmmssfff")}.png");
                bitmap.Save(filePath, ImageFormat.Png);
            }
            return filePath;
        }
    }
}