C#实时窗口截图

C#Winfom程序，实现窗口实时截图，输入窗口名称，实时抓取屏幕窗口，即使窗口没有获得焦点，或者不处于前端，甚至不可见（只要窗口不最小化）都可以抓取，并呈现在前段 ，用到了Win32API函数

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Threading;
using System.Drawing.Imaging;
using System.Diagnostics;
using System.IO;



namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        System.Timers.Timer timer;
        static string wintext = string.Empty;
        bool isStart = false;
        public Form1（）
        {
            InitializeComponent（）;
            wintext = textBox1.Text;
        }

        /// 

        /// 窗口加载调用函数
        /// 

        /// 
        /// 
        private void Form1_Load（object sender EventArgs e）
        {
           timer1.Tick +=new EventHandler（timer1_Tick）;
            timer1.Interval = 1000;
            timer1.Enabled=false;

        }

        public  byte[] ImageToBinary（string imagePath）
        {
            FileStream fileStream = new FileStream（imagePath FileMode.Open FileAccess.Read）;
            byte[] buffer = new byte[fileStream.Length];
            fileStream.Read（buffer 0 （int）fileStream.Length）;
            fileStream.Close（）;
            return buffer;
        }

        /// 

        /// 把图片转换成字节格式
        /// 

        /// 图片名称
        /// 
        private byte[] ImageToByte（Image image）       
        {           //Image image =（Image） pb.Image.Clone（）;                   
            // pb.Image.Dispose（）;                     
            //byte[] b = null;           
            try           
            {               
                Image sceneImage = new Bitmap（image）;                 
                ////实例化流               
                System.IO.MemoryStream imageStream = new System.IO.MemoryStream（）;               
                //将图片的实例保存到流中               
                sceneImage.Save（imageStream ImageFormat.Jpeg）;               
                //保存流的二进制数组              
                byte[] imageContent = new Byte[imageStream.Length];               
                imageStream.Position = 0;               
                //将流泻如数组中               
                imageStream.Read（imageContent 0 （int）imageStream.Length）;               
                return imageStream.ToArray（）;           
            }           
            catch （Exception ex）           
            {                throw;          
            }           // return b;      
        }


        public Image BinaryToImage（byte[] imgByte）
        {
            if （imgByte == null） return null;
            byte[] buffer = imgByte.ToArray（）;
            MemoryStream memStream = new MemoryStream（）;
            memStream.Write（buffer 0 buffer.Length）;
   

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件      10240  2012-11-26 12:02  WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.exe

     文件      24064  2012-11-26 12:02  WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.pdb

     文件      11600  2012-11-26 12:02  WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.vshost.exe

     文件        631  2012-11-27 12:22  WindowsFormsApplication1\WindowsFormsApplication1\bin\Release\Capture.jpg

     文件      56320  2012-12-25 14:48  WindowsFormsApplication1\WindowsFormsApplication1\bin\Release\WindowsFormsApplication1.exe

     文件      28160  2012-12-25 14:48  WindowsFormsApplication1\WindowsFormsApplication1\bin\Release\WindowsFormsApplication1.pdb

     文件      11600  2012-12-25 14:51  WindowsFormsApplication1\WindowsFormsApplication1\bin\Release\WindowsFormsApplication1.vshost.exe

     文件        490  2010-03-17 22:39  WindowsFormsApplication1\WindowsFormsApplication1\bin\Release\WindowsFormsApplication1.vshost.exe.manifest

     文件      43752  2012-11-27 11:18  WindowsFormsApplication1\WindowsFormsApplication1\Capture.jpg

     文件       7445  2012-12-25 14:48  WindowsFormsApplication1\WindowsFormsApplication1\Form1.cs

     文件       3779  2012-12-25 14:48  WindowsFormsApplication1\WindowsFormsApplication1\Form1.Designer.cs

     文件       6011  2012-12-25 14:48  WindowsFormsApplication1\WindowsFormsApplication1\Form1.resx

     文件       5420  2012-11-26 10:23  WindowsFormsApplication1\WindowsFormsApplication1\obj\x86\Debug\DesignTimeResolveAssemblyReferences.cache

     文件       6374  2012-11-26 12:02  WindowsFormsApplication1\WindowsFormsApplication1\obj\x86\Debug\DesignTimeResolveAssemblyReferencesInput.cache

     文件        938  2012-11-26 12:02  WindowsFormsApplication1\WindowsFormsApplication1\obj\x86\Debug\WindowsFormsApplication1.csproj.FileListAbsolute.txt

     文件        975  2012-11-26 11:59  WindowsFormsApplication1\WindowsFormsApplication1\obj\x86\Debug\WindowsFormsApplication1.csproj.GenerateResource.Cache

     文件       9174  2012-11-26 10:35  WindowsFormsApplication1\WindowsFormsApplication1\obj\x86\Debug\WindowsFormsApplication1.csprojResolveAssemblyReference.cache

     文件      10240  2012-11-26 12:02  WindowsFormsApplication1\WindowsFormsApplication1\obj\x86\Debug\WindowsFormsApplication1.exe

     文件        180  2012-11-26 11:59  WindowsFormsApplication1\WindowsFormsApplication1\obj\x86\Debug\WindowsFormsApplication1.Form1.resources

     文件      24064  2012-11-26 12:02  WindowsFormsApplication1\WindowsFormsApplication1\obj\x86\Debug\WindowsFormsApplication1.pdb

     文件        180  2012-11-24 14:18  WindowsFormsApplication1\WindowsFormsApplication1\obj\x86\Debug\WindowsFormsApplication1.Properties.Resources.resources

     文件       4440  2012-12-12 10:06  WindowsFormsApplication1\WindowsFormsApplication1\obj\x86\Release\DesignTimeResolveAssemblyReferences.cache

     文件       6841  2012-12-25 14:48  WindowsFormsApplication1\WindowsFormsApplication1\obj\x86\Release\DesignTimeResolveAssemblyReferencesInput.cache

     文件       1034  2012-12-25 14:48  WindowsFormsApplication1\WindowsFormsApplication1\obj\x86\Release\GenerateResource.read.1.tlog

     文件       1102  2012-12-25 14:48  WindowsFormsApplication1\WindowsFormsApplication1\obj\x86\Release\GenerateResource.write.1.tlog

     文件       4608  2012-11-27 11:24  WindowsFormsApplication1\WindowsFormsApplication1\obj\x86\Release\TempPE\Properties.Resources.Designer.cs.dll

     文件       2437  2012-12-25 14:51  WindowsFormsApplication1\WindowsFormsApplication1\obj\x86\Release\WindowsFormsApplication1.csproj.FileListAbsolute.txt

     文件        975  2012-11-26 11:59  WindowsFormsApplication1\WindowsFormsApplication1\obj\x86\Release\WindowsFormsApplication1.csproj.GenerateResource.Cache

     文件      12765  2012-11-26 13:20  WindowsFormsApplication1\WindowsFormsApplication1\obj\x86\Release\WindowsFormsApplication1.csprojResolveAssemblyReference.cache

     文件      56320  2012-12-25 14:48  WindowsFormsApplication1\WindowsFormsApplication1\obj\x86\Release\WindowsFormsApplication1.exe

............此处省略30个文件信息