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   源码介绍

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//Download by http://www.NewXing.com
using System;
using System.Drawing;
using System.Collections;
using System.Windows.Forms;
using System.Data;
using System.Runtime.InteropServices; 
using System.Threading;

namespace SerialAPI 
{ 
	/// <summary> 
	/// SerialPort 的摘要说明。 
	/// </summary> 
	public class SerialPort 
	{ 
		#region 申明要引用的和串口调用有关的API 
		//win32 api constants 
		private const uint GENERIC_READ = 0x80000000; 
		private const uint GENERIC_WRITE = 0x40000000; 
		private const int OPEN_EXISTING = 3; 
		private const int INVALID_HANDLE_VALUE = -1; 
		private const int MAXBLOCK = 4096; 

		private const uint PURGE_TXABORT = 0x0001; // Kill the pending/current writes to the comm port. 
		private const uint PURGE_RXABORT = 0x0002; // Kill the pending/current reads to the comm port. 
		private const uint PURGE_TXCLEAR = 0x0004; // Kill the transmit queue if there. 
		private const uint PURGE_RXCLEAR = 0x0008; // Kill the typeahead buffer if there. 

		[StructLayout(LayoutKind.Sequential)] 
			private struct DCB 
		{ 
			//taken from c struct in platform sdk 
			public int DCBlength; // sizeof(DCB) 
			public int BaudRate; // current baud rate 
			public int fBinary; // binary mode, no EOF check 
			public int fParity; // enable parity checking 
			public int fOutxCtsFlow; // CTS output flow control 
			public int fOutxDsrFlow; // DSR output flow control 
			public int fDtrControl; // DTR flow control type 
			public int fDsrSensitivity; // DSR sensitivity 
			public int fTXContinueOnXoff; // XOFF continues Tx 
			public int fOutX; // XON/XOFF out flow control 
			public int fInX; // XON/XOFF in flow control 
			public int fErrorChar; // enable error replacement 
			public int fNull; // enable null stripping 
			public int fRtsControl; // RTS flow control 
			public int fAbortOnError; // abort on error 
			public int fDummy2; // reserved 
			public ushort wReserved; // not currently used 
			public ushort XonLim; // transmit XON threshold 
			public ushort XoffLim; // transmit XOFF threshold 
			public byte ByteSize; // number of bits/byte, 4-8 
			public byte Parity; // 0-4=no,odd,even,mark,space 
			public byte StopBits; // 0,1,2 = 1, 1.5, 2 
			public char XonChar; // Tx and Rx XON character 
			public char XoffChar; // Tx and Rx XOFF character 
			public char ErrorChar; // error replacement character 
			public char EofChar; // end of input character 
			public char EvtChar; // received event character 
			public ushort wReserved1; // reserved; do not use 
		} 

		[StructLayout(LayoutKind.Sequential)] 
			private struct COMMTIMEOUTS 
		{ 
			public int ReadIntervalTimeout; 
			public int ReadTotalTimeoutMultiplier; 
			public int ReadTotalTimeoutConstant; 
			public int WriteTotalTimeoutMultiplier; 
			public int WriteTotalTimeoutConstant; 
		} 

		[StructLayout(LayoutKind.Sequential)] 
			private struct OVERLAPPED 
		{ 
			public int Internal; 
			public int InternalHigh; 
			public int Offset; 
			public int OffsetHigh; 
			public int hEvent; 
		} 

		[StructLayout(LayoutKind.Sequential)] 
			private struct COMSTAT 
		{ 
			/*public int fCtsHold; 
			public int fDsrHold; 
			public int fRlsdHold; 
			public int fXoffHold; 
			public int fXoffSent; 
			public int fEof; 
			public int fTxim; 
			public int fReserved; 
			public int cbInQue; 
			public int cbOutQue;*/ 
			// Should have a reverse, i don't know why!!!!! 
			public int cbOutQue; 
			public int cbInQue; 
			public int fReserved; 
			public int fTxim; 
			public int fEof; 
			public int fXoffSent; 
			public int fXoffHold; 
			public int fRlsdHold; 
			public int fDsrHold; 
			public int fCtsHold; 
		} 
#if FULLFRAMEWORK 
[DllImport("kernel32")] 
private static extern int CreateFile( 
string lpFileName, // file name 
uint dwDesiredAccess, // access mode 
int dwShareMode, // share mode 
int lpSecurityAttributes, // SD 
int dwCreationDisposition, // how to create 
int dwFlagsAndAttributes, // file attributes 
int hTemplateFile // handle to template file 
); 
#else 
		[DllImport("coredll")] 
		private static extern int CreateFile( 
			string lpFileName, // file name 
			uint dwDesiredAccess, // access mode 
			int dwShareMode, // share mode 
			int lpSecurityAttributes, // SD 
			int dwCreationDisposition, // how to create 
			int dwFlagsAndAttributes, // file attributes 
			int hTemplateFile // handle to template file 
			); 
#endif 
#if FULLFRAMEWORK 
[DllImport("kernel32")] 
private static extern bool GetCommState( 
int hFile, // handle to communications device 
ref DCB lpDCB // device-control block 
); 
#else 
		[DllImport("coredll")] 
		private static extern bool GetCommState( 
			int hFile, // handle to communications device 
			ref DCB lpDCB // device-control block 
			); 
#endif 
#if FULLFRAMEWORK 
[DllImport("kernel32")] 
private static extern bool BuildCommDCB( 
string lpDef, // device-control string 
ref DCB lpDCB // device-control block 
); 
#else 
		[DllImport("coredll")] 
		private static extern bool BuildCommDCB( 
			string lpDef, // device-control string 
			ref DCB lpDCB // device-control block 
			); 
#endif 
#if FULLFRAMEWORK 
[DllImport("kernel32")] 
private static extern bool SetCommState( 
int hFile, // handle to communications device 
ref DCB lpDCB // device-control block 
); 
#else 
		[DllImport("coredll")] 
		private static extern bool SetCommState( 
			int hFile, // handle to communications device 
			ref DCB lpDCB // device-control block 
			); 
#endif 
#if FULLFRAMEWORK 
[DllImport("kernel32")] 
private static extern bool GetCommTimeouts( 
int hFile, // handle to comm device 
ref COMMTIMEOUTS lpCommTimeouts // time-out values 
); 
#else 
		[DllImport("coredll")] 
		private static extern bool GetCommTimeouts( 
			int hFile, // handle to comm device 
			ref COMMTIMEOUTS lpCommTimeouts // time-out values 
			); 
#endif 
#if FULLFRAMEWORK 
[DllImport("kernel32")] 
private static extern bool SetCommTimeouts( 
int hFile, // handle to comm device 
ref COMMTIMEOUTS lpCommTimeouts // time-out values 
); 
#else 
		[DllImport("coredll")] 
		private static extern bool SetCommTimeouts( 
			int hFile, // handle to comm device 
			ref COMMTIMEOUTS lpCommTimeouts // time-out values 
			); 
#endif 
#if FULLFRAMEWORK 
[DllImport("kernel32")] 
private static extern bool ReadFile( 
int hFile, // handle to file 
byte[] lpBuffer, // data buffer 
int nNumberOfBytesToRead, // number of bytes to read 
ref int lpNumberOfBytesRead, // number of bytes read 
ref OVERLAPPED lpOverlapped // overlapped buffer 
); 
#else 
		[DllImport("coredll")] 
		private static extern bool ReadFile( 
			int hFile, // handle to file 
			byte[] lpBuffer, // data buffer 
			int nNumberOfBytesToRead, // number of bytes to read 
			ref int lpNumberOfBytesRead, // number of bytes read 
			ref OVERLAPPED lpOverlapped // overlapped buffer 
			); 
#endif 
#if FULLFRAMEWORK 
[DllImport("kernel32")] 
private static extern bool WriteFile( 
int hFile, // handle to file 
byte[] lpBuffer, // data buffer 
int nNumberOfBytesToWrite, // number of bytes to write 
ref int lpNumberOfBytesWritten, // number of bytes written 
ref OVERLAPPED lpOverlapped // overlapped buffer 
); 
#else 
		[DllImport("coredll")] 
		private static extern bool WriteFile( 
			int hFile, // handle to file 
			byte[] lpBuffer, // data buffer 
			int nNumberOfBytesToWrite, // number of bytes to write 
			ref int lpNumberOfBytesWritten, // number of bytes written 
			ref OVERLAPPED lpOverlapped // overlapped buffer 
			); 
#endif 
#if FULLFRAMEWORK 
[DllImport("kernel32")] 
private static extern bool CloseHandle( 
int hObject // handle to object 
); 
#else 
		[DllImport("coredll")] 
		private static extern bool CloseHandle( 
			int hObject // handle to object 
			); 
#endif 
#if FULLFRAMEWORK 
[DllImport("kernel32")] 
private static extern bool ClearCommError( 
int hFile, // handle to file 
ref int lpErrors, 
ref COMSTAT lpStat 
); 
#else 
		[DllImport("coredll")] 
		private static extern bool ClearCommError( 
			int hFile, // handle to file 
			ref int lpErrors, 
			ref COMSTAT lpStat 
			); 
#endif 
#if FULLFRAMEWORK 
[DllImport("kernel32")] 
private static extern bool PurgeComm( 
int hFile, // handle to file 
uint dwFlags 
); 
#else 
		[DllImport("coredll")] 
		private static extern bool PurgeComm( 
			int hFile, // handle to file 
			uint dwFlags 
			); 
#endif 
#if FULLFRAMEWORK 
[DllImport("kernel32")] 
private static extern bool SetupComm( 
int hFile, 
int dwInQueue, 
int dwOutQueue 
); 
#else 
		[DllImport("coredll")] 
		private static extern bool SetupComm( 
			int hFile, 
			int dwInQueue, 
			int dwOutQueue 
			); 
#endif 
		#endregion 

		// SerialPort的成员变量 
		private int hComm = INVALID_HANDLE_VALUE; 
		private bool bOpened = false; 

		public bool Opened 
		{ 
			get 
			{ 
				return bOpened; 
			} 
		} 

		/// <summary> 
		///串口的初始化函数 
		///lpFileName 端口名 
		///baudRate 波特率 
		///parity 校验位 
		///byteSize 数据位 
		///stopBits 停止位 
		/// <summary> 
		public bool OpenPort(string lpFileName,int baudRate,byte parity, byte byteSize, byte stopBits) 
		{ 
			// OPEN THE COMM PORT. 
			hComm = CreateFile(lpFileName ,GENERIC_READ | GENERIC_WRITE, 0, 0, OPEN_EXISTING, 0, 0); 
			// IF THE PORT CANNOT BE OPENED, BAIL OUT. 
			if(hComm == INVALID_HANDLE_VALUE) 
			{ 
				return false; 
			} 

			SetupComm(hComm, MAXBLOCK, MAXBLOCK); 

			// SET THE COMM TIMEOUTS. 
			COMMTIMEOUTS ctoCommPort = new COMMTIMEOUTS(); 
			GetCommTimeouts(hComm,ref ctoCommPort); 
			ctoCommPort.ReadIntervalTimeout = Int32.MaxValue; 
			ctoCommPort.ReadTotalTimeoutConstant = 0; 
			ctoCommPort.ReadTotalTimeoutMultiplier = 0; 
			ctoCommPort.WriteTotalTimeoutMultiplier = 10; 
			ctoCommPort.WriteTotalTimeoutConstant = 1000; 
			SetCommTimeouts(hComm,ref ctoCommPort); 

			// SET BAUD RATE, PARITY, WORD SIZE, AND STOP BITS. 
			// THERE ARE OTHER WAYS OF DOING SETTING THESE BUT THIS IS THE EASIEST. 
			// IF YOU WANT TO LATER ADD CODE FOR OTHER BAUD RATES, REMEMBER 
			// THAT THE ARGUMENT FOR BuildCommDCB MUST BE A POINTER TO A STRING. 
			// ALSO NOTE THAT BuildCommDCB() DEFAULTS TO NO HANDSHAKING. 
			DCB dcbCommPort = new DCB(); 
			dcbCommPort.DCBlength = Marshal.SizeOf(dcbCommPort); 
			GetCommState(hComm, ref dcbCommPort); 
			dcbCommPort.BaudRate = baudRate; 
			dcbCommPort.Parity = parity; 
			dcbCommPort.ByteSize = byteSize; 
			dcbCommPort.StopBits = stopBits; 
			SetCommState(hComm, ref dcbCommPort); 

			PurgeComm(hComm, PURGE_RXCLEAR | PURGE_RXABORT); 
			PurgeComm(hComm, PURGE_TXCLEAR | PURGE_TXABORT); 

			bOpened = true; 
			return true; 
		} 

		// 关闭串口 
		public bool ClosePort() 
		{ 
			if (hComm == INVALID_HANDLE_VALUE) 
			{ 
				return false; 
			} 

			if (CloseHandle(hComm)) 
			{ 
				hComm = INVALID_HANDLE_VALUE; 
				bOpened = false; 
				return true; 
			} 
			else 
			{ 
				return false; 
			} 
		} 

		// 往串口写数据 
		public bool WritePort(byte[] WriteBytes) 
		{ 
			if (hComm == INVALID_HANDLE_VALUE) 
			{ 
				return false; 
			} 

			COMSTAT ComStat = new COMSTAT(); 
			int dwErrorFlags = 0; 

			ClearCommError(hComm, ref dwErrorFlags, ref ComStat); 
			if (dwErrorFlags != 0) 
				PurgeComm(hComm, PURGE_TXCLEAR | PURGE_TXABORT); 

			OVERLAPPED ovlCommPort = new OVERLAPPED(); 
			int BytesWritten = 0; 
			return WriteFile(hComm, WriteBytes, WriteBytes.Length, ref BytesWritten, ref ovlCommPort); 
		} 

		// 从串口读数据 
		public int ReadPort(int NumBytes, byte[] commRead) 
		{ 
			if (hComm == INVALID_HANDLE_VALUE) 
			{ 
				return 0; 
			} 

			COMSTAT ComStat = new COMSTAT(); 
			int dwErrorFlags = 0; 

			ClearCommError(hComm, ref dwErrorFlags, ref ComStat); 
			if (dwErrorFlags != 0) 
			{
				PurgeComm(hComm, PURGE_RXCLEAR | PURGE_RXABORT); 
			}

			if (ComStat.cbInQue > 0) 
			{ 
				OVERLAPPED ovlCommPort = new OVERLAPPED(); 
				int BytesRead = 0; 
				ReadFile(hComm, commRead, NumBytes, ref BytesRead, ref ovlCommPort); 
				return BytesRead;
			} 
			else 
			{ 
				return 0; 
			} 
		} 
	} 
} 

namespace CSharpSerialPort
{
	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.MenuItem menuItem1;
		private System.Windows.Forms.MenuItem menuItem2;
		private System.Windows.Forms.Button button1;
		private System.Windows.Forms.MainMenu mainMenu1;
		private System.Windows.Forms.TextBox textBoxReceive;
		private System.Windows.Forms.Button button2;

		private SerialAPI.SerialPort Serial=new SerialAPI.SerialPort();

		bool PortOpen=false;
		private System.Windows.Forms.TextBox textBoxSend;
		private System.Windows.Forms.Label label1;
		private Microsoft.WindowsCE.Forms.InputPanel inputPanel1;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.CheckBox checkBox1;
		bool Receive=false;
		private System.Windows.Forms.Timer timer1;
		private char last_key;
		private System.Windows.Forms.MenuItem menuItem3;
		private System.Windows.Forms.Label label4;
		private int loopnum;
		private System.Windows.Forms.Label label5;
		private int baudRate;
		private System.Windows.Forms.Label label6;
		private System.Windows.Forms.Label returnnum;
		private System.Windows.Forms.Button button3;
		private System.Windows.Forms.Button button4;
		private int delay;

		public Form1()
		{
			//
			// Windows 窗体设计器支持所必需的
			//
			InitializeComponent();

			//
			// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
			//
		}
		/// <summary>
		/// 清理所有正在使用的资源。
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			base.Dispose( disposing );
		}
		#region Windows 窗体设计器生成的代码
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{
			this.mainMenu1 = new System.Windows.Forms.MainMenu();
			this.menuItem1 = new System.Windows.Forms.MenuItem();
			this.menuItem2 = new System.Windows.Forms.MenuItem();
			this.menuItem3 = new System.Windows.Forms.MenuItem();
			this.button1 = new System.Windows.Forms.Button();
			this.textBoxReceive = new System.Windows.Forms.TextBox();
			this.button2 = new System.Windows.Forms.Button();
			this.textBoxSend = new System.Windows.Forms.TextBox();
			this.label1 = new System.Windows.Forms.Label();
			this.inputPanel1 = new Microsoft.WindowsCE.Forms.InputPanel();
			this.label2 = new System.Windows.Forms.Label();
			this.returnnum = new System.Windows.Forms.Label();
			this.checkBox1 = new System.Windows.Forms.CheckBox();
			this.timer1 = new System.Windows.Forms.Timer();
			this.label4 = new System.Windows.Forms.Label();
			this.label5 = new System.Windows.Forms.Label();
			this.label6 = new System.Windows.Forms.Label();
			this.button3 = new System.Windows.Forms.Button();
			this.button4 = new System.Windows.Forms.Button();
			// 
			// mainMenu1
			// 
			this.mainMenu1.MenuItems.Add(this.menuItem1);
			// 
			// menuItem1
			// 
			this.menuItem1.MenuItems.Add(this.menuItem2);
			this.menuItem1.MenuItems.Add(this.menuItem3);
			this.menuItem1.Text = "操作";
			// 
			// menuItem2
			// 
			this.menuItem2.Text = "退出";
			this.menuItem2.Click  = new System.EventHandler(this.menuItem2_Click);
			// 
			// menuItem3
			// 
			this.menuItem3.Text = "设置串口";
			this.menuItem3.Click  = new System.EventHandler(this.menuItem3_Click);
			// 
			// button1
			// 
			this.button1.Location = new System.Drawing.Point(88, 184);
			this.button1.Size = new System.Drawing.Size(56, 24);
			this.button1.Text = "发送";
			this.button1.Click  = new System.EventHandler(this.button1_Click);
			// 
			// textBoxReceive
			// 
			this.textBoxReceive.Location = new System.Drawing.Point(24, 22);
			this.textBoxReceive.Multiline = true;
			this.textBoxReceive.Size = new System.Drawing.Size(192, 98);
			this.textBoxReceive.Text = "";
			// 
			// button2
			// 
			this.button2.Location = new System.Drawing.Point(8, 184);
			this.button2.Size = new System.Drawing.Size(64, 24);
			this.button2.Text = "打开";
			this.button2.Click  = new System.EventHandler(this.button2_Click);
			// 
			// textBoxSend
			// 
			this.textBoxSend.Location = new System.Drawing.Point(24, 152);
			this.textBoxSend.Size = new System.Drawing.Size(192, 21);
			this.textBoxSend.Text = "01 01 02 06 05 01 09 00 00 25 08 00 00 01 10 66 66 66 66 FF ";
			this.textBoxSend.TextChanged  = new System.EventHandler(this.textBoxSend_TextChanged);
			// 
			// label1
			// 
			this.label1.Location = new System.Drawing.Point(23, 4);
			this.label1.Size = new System.Drawing.Size(72, 16);
			this.label1.Text = "接收区";
			// 
			// label2
			// 
			this.label2.Location = new System.Drawing.Point(24, 128);
			this.label2.Size = new System.Drawing.Size(64, 16);
			this.label2.Text = "发送区";
			// 
			// returnnum
			// 
			this.returnnum.Location = new System.Drawing.Point(88, 216);
			this.returnnum.Size = new System.Drawing.Size(48, 16);
			this.returnnum.Text = "0";
			// 
			// checkBox1
			// 
			this.checkBox1.Location = new System.Drawing.Point(88, 128);
			this.checkBox1.Size = new System.Drawing.Size(80, 16);
			this.checkBox1.Text = "十六进制";
			// 
			// timer1
			// 
			this.timer1.Interval = 1500;
			this.timer1.Tick  = new System.EventHandler(this.timer1_Tick);
			// 
			// label4
			// 
			this.label4.Location = new System.Drawing.Point(136, 216);
			this.label4.Size = new System.Drawing.Size(48, 16);
			this.label4.Text = "label4";
			// 
			// label5
			// 
			this.label5.Location = new System.Drawing.Point(184, 216);
			this.label5.Size = new System.Drawing.Size(48, 16);
			this.label5.Text = "label5";
			// 
			// label6
			// 
			this.label6.Location = new System.Drawing.Point(40, 216);
			this.label6.Size = new System.Drawing.Size(48, 16);
			this.label6.Text = "label6";
			// 
			// button3
			// 
			this.button3.Location = new System.Drawing.Point(0, 128);
			this.button3.Size = new System.Drawing.Size(24, 16);
			this.button3.Text = "button3";
			this.button3.Click  = new System.EventHandler(this.button3_Click);
			// 
			// button4
			// 
			this.button4.Location = new System.Drawing.Point(152, 184);
			this.button4.Size = new System.Drawing.Size(72, 24);
			this.button4.Text = "更改设置";
			this.button4.Click  = new System.EventHandler(this.button4_Click);
			// 
			// Form1
			// 
			this.ClientSize = new System.Drawing.Size(234, 232);
			this.Controls.Add(this.button4);
			this.Controls.Add(this.button3);
			this.Controls.Add(this.label6);
			this.Controls.Add(this.label5);
			this.Controls.Add(this.label4);
			this.Controls.Add(this.checkBox1);
			this.Controls.Add(this.returnnum);
			this.Controls.Add(this.label2);
			this.Controls.Add(this.label1);
			this.Controls.Add(this.textBoxSend);
			this.Controls.Add(this.button2);
			this.Controls.Add(this.textBoxReceive);
			this.Controls.Add(this.button1);
			this.Menu = this.mainMenu1;
			this.MinimizeBox = false;
			this.Text = "Form1";
			this.Load  = new System.EventHandler(this.Form1_Load);

		}
		#endregion

		/// <summary>
		/// 应用程序的主入口点。
		/// </summary>

		static void Main() 
		{
			Application.Run(new Form1());
		}

		private void menuItem2_Click(object sender, System.EventArgs e)
		{
			Receive=false;
			Serial.ClosePort();

			this.Close();
		}

		private void SendCmd()
		{
			byte[] buf;
			textBoxReceive.Text ="";
			if(textBoxSend.TextLength==0)
			{
				return;
			}

			if(checkBox1.Checked ==true)
			{
				buf = new byte[(textBoxSend.Text.Length/3)];

				for ( int i=0 ; i< (textBoxSend.Text.Length/3); i  )
				{
					buf[i] = byte.Parse( textBoxSend.Text.Substring(i*3 ,2) ,System.Globalization.NumberStyles.AllowHexSpecifier);
				}

				//com.Output = buf;
			}
			else
			{
				buf=new byte [textBoxSend.TextLength];
				for(int i=0;i<textBoxSend.TextLength;i  )
				{
					buf[i]=Convert.ToByte(textBoxSend.Text[i]);
				}
				//			byte[] buf=new byte[4]; 
				//			buf[0]=200; 
				//			buf[1]=0;
				//			buf[2]=0;
				//			buf[3]=200;	
			}
			Serial.WritePort(buf);
		}

		private void button1_Click(object sender, System.EventArgs e)
		{
//			for(int i=0;i<5;i  )
//			{
//				SendCmd();
//				Sleep(500);
//			}
			loopnum=0;
			timer1.Enabled =true;
			timer1.Interval=delay;
		}

		private void timer1_Tick(object sender, System.EventArgs e)
		{
			loopnum=loopnum 1;
			label6.Text =loopnum.ToString();
			if(int.Parse(returnnum.Text)<10 && loopnum<300) //int.Parse(returnnum.Text)<4 && 
			{
				SendCmd();
			}
			else
			{
				returnnum.Text ="0";
				timer1.Enabled =false;
			}		
		}

		private void button2_Click(object sender, System.EventArgs e)
		{
			if(!PortOpen)
			{
				if(Serial.OpenPort("COM1:",baudRate,0,8,1))
				{
					
					PortOpen=true;
					Receive=true;
					ThreadPool.QueueUserWorkItem(new WaitCallback(SerialReceive),0); 
					button2.Text="关闭";
				}
			}
			else
			{
				Receive=false;
				Serial.ClosePort();
				PortOpen=false;
				button2.Text="打开";
			}
		
		}

		public void SerialReceive(Object a)
		{
			byte [] buf;
			buf=new byte [1];
			int bytesRead=0;
			int i;

			while(Receive)
			{
				if(Serial.Opened)
				{
					bytesRead=Serial.ReadPort(1,buf);
					if(bytesRead>0)
					{
						for(i=0;i<bytesRead;i  )
						{
//							textBoxReceive.Text =Convert.ToChar(buf[i]).ToString();
							textBoxReceive.Text = buf[i].ToString("X2")  " ";
						}
						returnnum.Text = textBoxReceive.Text.Length.ToString();
					}
					//Application.DoEvents();
					
				}
			}
			//Thread.Sleep(0);
		}

		private void textBoxSend_TextChanged(object sender, System.EventArgs e)
		{
			//
			// Hex格式发送数据区输入数据整理：自动用空格间隔每字节的数据
			//

			// 转换为大写
			textBoxSend.Text = textBoxSend.Text.ToUpper();

			if ( (textBoxSend.Text.Length % 3) == 2 )
			{
				if(last_key=='\b')
					textBoxSend.Text = textBoxSend.Text.Remove( textBoxSend.Text.Length-1 ,1 );
				else
					textBoxSend.Text  = " ";
			}
           
			// 设置插入点到最后面
			textBoxSend.SelectionStart = textBoxSend.Text.Length;
		}

		private void menuItem3_Click(object sender, System.EventArgs e)
		{
			cResult r = new cResult();
			r.TextChanged  = new TextChangedHandler(this.EventResultChanged);
			frmComSet fc = new frmComSet(r);
			fc.ShowDialog();
			label4.Text = r.Result1;//   "\r\n"   r.Result2;
			baudRate=int.Parse(r.Result1);
			label5.Text = r.Result2;
			delay=int.Parse(r.Result2);
		}

		private void EventResultChanged(string s)
		{
			label4.Text = s;
		}

		private void Form1_Load(object sender, System.EventArgs e)
		{
			baudRate=9600;
			delay=1500;
			label4.Text = baudRate.ToString();
			label5.Text =delay.ToString();
		}

		private void button3_Click(object sender, System.EventArgs e)
		{
//			ADOCE.Connection connection;
//            Set connection = CreateObject("ADOCE.Connection.3.1")
//            connection.ConnectionString = "Data Source=\MyDatabase.cdb"
//            connection.Open
		}

		private void button4_Click(object sender, System.EventArgs e)
		{
			SendCmd();
		}

		


	}
}