C#-0717的一个错误写法

using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;

namespace ConsoleApplication1
{
    class Program
    {
        //Win32 API
        [DllImport("User32.dll")]
        public static extern int GetSystemMetrics(int nIndex);
        static void Main(string[] args)
        {
            int Width, Height;
            double LineWidth, Size;
            Width = GetSystemMetrics(0);
            Height = GetSystemMetrics(1);
            //验证
            Console.WriteLine("{0}*{1}", Width, Height);
            Console.ReadKey();
            LineWidth = (((Width * 24) + 31) & (0x7FFFFFFF - 31)) >> 3; //对齐后每行数据长度
            Size = LineWidth * Height;
            //验证
            Console.WriteLine("{0};{1}", LineWidth, Size);
            Console.ReadKey();
            GetMem(Bits, Size);//动态分布内存
                               //截图
            Wnd = GetDesktopWindow(); //获取桌面句柄
            DC = GetWindowDC(Wnd); //返回hWnd参数所指定的窗口的设备环境
            MemDC = CreateCompatibleDC(DC); //该函数创建一个与指定设备兼容的内存设备上下文环境
            Bitmap = CreateCompatibleBitmap(DC, Width, Height); //创建与指定的设备环境相关的设备兼容的位图
            OldBitmap = SelectObject(MemDC, Bitmap); //选择一对象到指定的设备上下文环境中
            BitBlt(MemDC, 0, 0, Width, Height, DC, 0, 0, SRCCOPY); //
            Bitmap = SelectObject(MemDC, OldBitmap);
        }
    }
}

哎，忘了写错了啥，估计这篇又丢图了