GDI Problem (for pizhikcoder)

program.cs

using System;
using System.ComponentModel;
using System.Diagnostics;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.IO;
using System.Runtime.InteropServices;
using System.Windows;
using System.Windows.Forms;

namespace ScreenSharing
{
    class Program
    {
        // держи пару полезных ссылок, которые могут помочь
        /*
         * http://www.pinvoke.net/default.aspx/gdi32.BitBlt // метод pinvoke
         * https://www.cyotek.com/blog/capturing-screenshots-using-csharp-and-p-invoke // способ который нельзя сделать на Win7 SP1, так как старая версия
         * https://stackoverflow.com/questions/23026222/a-generic-error-occurred-in-gdi-using-c-sharp // первый вопрос
         * https://stackoverflow.com/questions/39530513/gdi-error-when-calling-image-fromhbitmap-on-handle-returned-by-loadimage // второй
         * https://stackoverflow.com/questions/2286722/generic-error-in-gdi-when-calling-bitmap-gethbitmap // третий
         * https://stackoverflow.com/questions/1053052/a-generic-error-occurred-in-gdi-jpeg-image-to-memorystream // четвертый
         */

        // способ до комментированных строк кода занимает ~10мс
        // Не учитывается время на переписывание в данные для отправки на сервер
        [STAThread]
        static void Main(string[] args)
        {
            Stopwatch stopwatch = new Stopwatch();
            stopwatch.Start();
            int width = Convert.ToInt32(System.Windows.SystemParameters.PrimaryScreenWidth);
            int height = Convert.ToInt32(System.Windows.SystemParameters.PrimaryScreenHeight);
            Bitmap bmp = new Bitmap(width,height);
            IntPtr pTarget = Graphics.FromImage(bmp).GetHdc();
            IntPtr pSource = CreateCompatibleDC(pTarget);
            if(!BitBlt(pTarget, 0, 0, width, height, pSource, 0, 0, TernaryRasterOperations.SRCCOPY))
            {
                throw new Win32Exception();
            }
            DeleteDC(pSource);
            System.Windows.MessageBox.Show(Convert.ToString(stopwatch.ElapsedMilliseconds));
            Bitmap result = Image.FromHbitmap(pTarget);
            byte[] arr;
            using(var stream = new MemoryStream())
            {
                result.Save(stream, ImageFormat.Jpeg);
                arr = stream.ToArray();
            }
            
        }

        [DllImport("gdi32.dll")]
        public static extern bool BitBlt(IntPtr hObject, int nXDest, int nYDest, int nWidth,
   int nHeight, IntPtr hObjSource, int nXSrc, int nYSrc, TernaryRasterOperations dwRop);

        [DllImport("gdi32.dll", ExactSpelling = true, SetLastError = true)]
        static extern IntPtr CreateCompatibleDC(IntPtr hdc);

        [DllImport("gdi32.dll", ExactSpelling = true, SetLastError = true)]
        static extern bool DeleteDC(IntPtr hdc);

        [DllImport("gdi32.dll", ExactSpelling = true, SetLastError = true)]
        static extern IntPtr SelectObject(IntPtr hdc, IntPtr hgdiobj);

        [DllImport("gdi32.dll", ExactSpelling = true, SetLastError = true)]
        static extern bool DeleteObject(IntPtr hObject);

        public enum TernaryRasterOperations : uint
        {
            SRCCOPY = 0x00CC0020,
            SRCPAINT = 0x00EE0086,
            SRCAND = 0x008800C6,
            SRCINVERT = 0x00660046,
            SRCERASE = 0x00440328,
            NOTSRCCOPY = 0x00330008,
            NOTSRCERASE = 0x001100A6,
            MERGECOPY = 0x00C000CA,
            MERGEPAINT = 0x00BB0226,
            PATCOPY = 0x00F00021,
            PATPAINT = 0x00FB0A09,
            PATINVERT = 0x005A0049,
            DSTINVERT = 0x00550009,
            BLACKNESS = 0x00000042,
            WHITENESS = 0x00FF0062,
            CAPTUREBLT = 0x40000000 //only if WinVer >= 5.0.0 (see wingdi.h)
        }


        // способ ниже занимает ~85 мс
        //stopwatch.Start();
        //var size = Screen.PrimaryScreen.Bounds.Size;
        //Bitmap bmp = new Bitmap(size.Width, size.Height);
        //Graphics graph = Graphics.FromImage(bmp);
        //graph.CopyFromScreen(0, 0, 0, 0, new Size(size.Width, size.Height));
        //graph.CompositingQuality = CompositingQuality.HighQuality;
        //graph.SmoothingMode = SmoothingMode.HighQuality;
        //graph.InterpolationMode = InterpolationMode.HighQualityBicubic;
        //MemoryStream ms = new MemoryStream();
        //bmp.Save(ms, ImageFormat.Png);
        //byte[] imagebt = new byte[3110400];
        //imagebt = ms.ToArray();
        //stopwatch.Stop();
        //System.Windows.MessageBox.Show(Convert.ToString(stopwatch.ElapsedMilliseconds));
    }
}