在vb60里面用过： 在窗体中添加名为MyComm的MSComm控件，并设置空间的属性，如下：.CommPort=2 '使用COM2 .Setting="9600,e,7,1" '波特率9600，偶校验，7个数据位，1个停止位 .InBufferSize=40 '设置MyComm接收缓冲区为40个字节 .OutBufferSize=2 '设置MyComm发送缓冲区为2个字节 .InputMode=comInputModeBinary '设置接收数据模式为二进制模式 .InputLen=1 '设置一次从接收缓冲区读取字节数为1 .Sthreshold=1 '设置一次从发送缓冲区读取字节数为1 .PortOpen=True '打开通信口Private Sub MSComm1_OnComm() Dim strTemp As String Dim pos As Integer Select Case MSComm1.CommEvent Case comEvCD ' Change in the CD line. Case comEvCTS ' Change in the CTS line. Case comEvDSR ' Change in the DSR line. Case comEvRing ' Change in the Ring Indicator. Case comEvReceive ' Received RThreshold # of chars strTemp = MSComm1.Input
strInputBuffer = strInputBuffer + strTemp Do pos = InStr(1, strInputBuffer, msgTrail, vbBinaryCompare) If pos > 0 Then strTemp = Mid(strInputBuffer, 1, pos + 1) strInputBuffer = Mid(strInputBuffer, pos + 2) RaiseEvent DataArrived(strTemp) End If Loop Until pos <= 0 Case comEvSend ' There are SThreshold number of characters in the transmit buffer. Case comEvEOF ' An EOF charater was found in the input stream
Case comEventBreak ' A Break was received. Case comEventFrame ' Framing Error Case comEventOverrun ' Data Lost. Case comEventRxOver ' Receive buffer overflow. Case comEventRxParity ' Parity Error. Case comEventTxFull ' Transmit buffer full. Case comEventDCB ' Unexpected error retrieving DCB] End Select End SubPublic Function OpenComm(ByVal port As Integer, ByVal settings As String) As Integer On Error GoTo errorhandler If MSComm1.PortOpen = True Then MSComm1.PortOpen = False End If
msgTrail = Chr(13) + Chr(10) OpenComm = 0 Exit Function errorhandler: OpenComm = Err.Number End FunctionPublic Function CloseComm() As Integer If MSComm1.PortOpen = True Then MSComm1.PortOpen = False End If End FunctionPublic Function SendData(ByVal data As String) As Integer If MSComm1.PortOpen = True Then MSComm1.Output = data SendData = 0 Else SendData = 1 End If End FunctionPrivate Sub UserControl_Terminate() If MSComm1.PortOpen = True Then MSComm1.PortOpen = False End If End Sub
Case comEvReceive 里就是接受到的数据处理，接收数据：MSComm1.Input 发送数据就用：Function SendData(ByVal data As String)
在窗体中添加名为MyComm的MSComm控件，并设置空间的属性，如下：.CommPort=2 '使用COM2
.Setting="9600,e,7,1" '波特率9600，偶校验，7个数据位，1个停止位
.InBufferSize=40 '设置MyComm接收缓冲区为40个字节
.OutBufferSize=2 '设置MyComm发送缓冲区为2个字节
.InputMode=comInputModeBinary
'设置接收数据模式为二进制模式
.InputLen=1 '设置一次从接收缓冲区读取字节数为1
.Sthreshold=1 '设置一次从发送缓冲区读取字节数为1
.PortOpen=True '打开通信口Private Sub MSComm1_OnComm()
Dim strTemp As String
Dim pos As Integer Select Case MSComm1.CommEvent
Case comEvCD ' Change in the CD line.
Case comEvCTS ' Change in the CTS line.
Case comEvDSR ' Change in the DSR line.
Case comEvRing ' Change in the Ring Indicator.
Case comEvReceive ' Received RThreshold # of chars
strTemp = MSComm1.Input
strInputBuffer = strInputBuffer + strTemp
Do
pos = InStr(1, strInputBuffer, msgTrail, vbBinaryCompare)
If pos > 0 Then
strTemp = Mid(strInputBuffer, 1, pos + 1)
strInputBuffer = Mid(strInputBuffer, pos + 2)
RaiseEvent DataArrived(strTemp)
End If
Loop Until pos <= 0
Case comEvSend ' There are SThreshold number of characters in the transmit buffer.
Case comEvEOF ' An EOF charater was found in the input stream
Case comEventBreak ' A Break was received.
Case comEventFrame ' Framing Error
Case comEventOverrun ' Data Lost.
Case comEventRxOver ' Receive buffer overflow.
Case comEventRxParity ' Parity Error.
Case comEventTxFull ' Transmit buffer full.
Case comEventDCB ' Unexpected error retrieving DCB]
End Select
End SubPublic Function OpenComm(ByVal port As Integer, ByVal settings As String) As Integer
On Error GoTo errorhandler
If MSComm1.PortOpen = True Then
MSComm1.PortOpen = False
End If
MSComm1.CommPort = port
MSComm1.settings = settings
MSComm1.RThreshold = 1
MSComm1.PortOpen = True
msgTrail = Chr(13) + Chr(10)
OpenComm = 0
Exit Function
errorhandler:
OpenComm = Err.Number
End FunctionPublic Function CloseComm() As Integer
If MSComm1.PortOpen = True Then
MSComm1.PortOpen = False
End If
End FunctionPublic Function SendData(ByVal data As String) As Integer
If MSComm1.PortOpen = True Then
MSComm1.Output = data
SendData = 0
Else
SendData = 1
End If
End FunctionPrivate Sub UserControl_Terminate()
If MSComm1.PortOpen = True Then
MSComm1.PortOpen = False
End If
End Sub
发送数据就用：Function SendData(ByVal data As String)
{
com2.PortOpen =true;
}
catch(Exception ex)
{
MessageBox.Show("Port Open Error");
return;
}
if(com2.PortOpen)
com2.PortOpen =false;
com2.Settings ="9600,n,8,1";
com2.InputMode =MSCommLib.InputModeConstants.comInputModeText;
com2.Output ="HELLO!";///发出的信息内容string inputStr = (string) com2.Input;///用来接收
下面是读卡器厂家给出的资料一部分：
----------------------------------------------------------------------
485通讯指令协议(开发说明和接口规格)
可以使用计算机(主机)对读卡器(分机)进行记录读取，时间设置和地址设置等。
⑴通讯方法：232／485异步通讯，双绞线总线方式。
⑵通讯波特率：9600
⑶串口方式：1位开始位，8个数据位，一个停止位，无奇偶校验。
⑷⑸通讯协议格式：。
------------------------------------------------------
|开始标志|分机地址|信息长度｜命令和参数/丛机返回|校验|
------------------------------------------------------
[开始标志]：长度2个字节，主机给分机：AAH FFH；
分机给主机：BBH FFH
[分机地址]：长度1个字节，00H---FEH。
[广播地址]：FFH
[信息长度]：表示命令和参数的总字节数，不包括开始标志、地址和校验的长度。
[校 验]：长度1个字节，是开始标志、地址、信息长度、命令和参数中所有字节的异或值。
[命令和数据]：
①读取刷卡记录命令
[功能]:从读卡器读取一条记录信息。
[命令]:A1H
读卡器返回：命令不能识别或校验出错(33H)；
或无新刷卡纪录(77H)；
或Flash中的一条读卡记录信息。
例如：
主机：AA FF 08(分机地址) 01(长度) A1 FD(校验)
AA FF 08 01 A1 FD
分机：BB FF 08(分机地址) 0B(长度) 00 22 34 55(卡号) 04 02 03 23 22 18 45(时间) 00 01 0B 00 00 00 00 0C 校验；红色字的返回是用来调试的,不用处理.
或者:BB FF 08 01 77(空记录) 校验；
或者:BB FF 08 01 33(出错) 校验
注意：卡号是4个字节的十六进制数,不能识别就是从机收到的上位机发来的命令不对或校验不对。
-------------------------------------------------------------------------
就用C#使用MSComm控件，下面是我的程序：
private bool initChk(AxMSCommLib.AxMSComm MSComm, Byte i)
{
i = 1;
MSComm.CommPort = i;
MSComm.InputLen = 0;//接收缓冲区的大小
MSComm.Settings = "9600,n,8,1";//串口属性
MSComm.Handshaking = MSCommLib.HandshakeConstants.comNone;
MSComm.InputMode = MSCommLib.InputModeConstants.comInputModeBinary;
MSComm.RThreshold = 1;//每7个字节响应消息
MSComm.PortOpen = true;//打开通信串口
return true;
}
byte[] iNum = new byte[255];
byte[] bJiaoYan = new byte[255];
byte intPort = 1;
private string ComBuffer = ""; private void button1_Click(object sender, System.EventArgs e)
{
try
{
if(!MSComm.PortOpen)
initChk(MSComm , intPort);
MSComm.OutBufferCount = 0;
iNum[0] = 170;
MSComm.Output = iNum;//AA
bJiaoYan[0] = iNum[0];
iNum[0] = 255;
bJiaoYan[0] =(byte)((Convert.ToInt32(bJiaoYan[0]))^(int)(Convert.ToInt32(iNum[0])));
MSComm.Output = iNum;//FF
iNum[0] = 1;
bJiaoYan[0] =(byte)((Convert.ToInt32(bJiaoYan[0]))^(int)(Convert.ToInt32(iNum[0])));
MSComm.Output = iNum;//1
iNum[0] = 1;
bJiaoYan[0] =(byte)((Convert.ToInt32(bJiaoYan[0]))^(int)(Convert.ToInt32(iNum[0])));
MSComm.Output = iNum;//1
iNum[0] =161;
bJiaoYan[0] =(byte)((Convert.ToInt32(bJiaoYan[0]))^(int)(Convert.ToInt32(iNum[0])));
MSComm.Output = iNum;//A1
MSComm.Output = bJiaoYan;//F4
}
catch(Exception ex)
{MessageBox.Show(ex.Message);}
} private void MSComm_OnComm(object sender, System.EventArgs e)
{
string strIn="" ;
byte[] bytIn;
object objIn;
int i;
short aa = MSComm.CommEvent; MSComm.InputMode=MSCommLib.InputModeConstants.comInputModeBinary;
objIn=MSComm.Input;
bytIn =(byte[])objIn;
for (i=0;i<=(bytIn.Length-1);i++ )
{
// strIn ="\r\n"+ " "+bytIn[i].ToString("X");
strIn = bytIn[i].ToString("X");
}
this.textBox1.Text = strIn;
}
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using File;
using System.Threading;namespace mscomm4
{
/// <summary>
/// Form1 的摘要说明。
/// </summary>
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.GroupBox groupBox1;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.Label label3;
private System.Windows.Forms.Label label4;
private System.Windows.Forms.Label label5;
private System.Windows.Forms.ComboBox Cbbox_Port;
private System.Windows.Forms.ComboBox Cbbox_Bound;
private System.Windows.Forms.ComboBox Cbbox_Databits;
private System.Windows.Forms.ComboBox Cbbox_Parity;
private System.Windows.Forms.ComboBox Cbbox_Stop;
private System.Windows.Forms.GroupBox groupBox2;
private System.Windows.Forms.GroupBox groupBox3;
private System.Windows.Forms.TextBox Txtbox_Send;
private System.Windows.Forms.Button Btn_Open;
private System.Windows.Forms.Button Btn_Close;
private System.Windows.Forms.Button Btn_Clear;
private System.Windows.Forms.Button Btn_Send;
private AxMSCommLib.AxMSComm axMSComm1;
private System.Windows.Forms.TextBox Txtbox_Recev;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.SaveFileDialog saveFileDialog1;
private string fName;
private bool stop=false;
private bool open=false;
private System.Windows.Forms.Button button2;
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.Container components = null; 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 )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
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()
{
System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(Form1));
this.groupBox1 = new System.Windows.Forms.GroupBox();
this.Cbbox_Stop = new System.Windows.Forms.ComboBox();
this.Cbbox_Parity = new System.Windows.Forms.ComboBox();
this.Cbbox_Databits = new System.Windows.Forms.ComboBox();
this.Cbbox_Bound = new System.Windows.Forms.ComboBox();
this.Cbbox_Port = new System.Windows.Forms.ComboBox();
this.label5 = new System.Windows.Forms.Label();
this.label4 = new System.Windows.Forms.Label();
this.label3 = new System.Windows.Forms.Label();
this.label2 = new System.Windows.Forms.Label();
this.label1 = new System.Windows.Forms.Label();
this.groupBox2 = new System.Windows.Forms.GroupBox();
this.Txtbox_Recev = new System.Windows.Forms.TextBox();
this.groupBox3 = new System.Windows.Forms.GroupBox();
this.Txtbox_Send = new System.Windows.Forms.TextBox();
this.Btn_Open = new System.Windows.Forms.Button();
this.Btn_Close = new System.Windows.Forms.Button();
this.Btn_Clear = new System.Windows.Forms.Button();
this.Btn_Send = new System.Windows.Forms.Button();
this.axMSComm1 = new AxMSCommLib.AxMSComm();
this.button1 = new System.Windows.Forms.Button();
this.saveFileDialog1 = new System.Windows.Forms.SaveFileDialog();
this.button2 = new System.Windows.Forms.Button();
this.groupBox1.SuspendLayout();
this.groupBox2.SuspendLayout();
this.groupBox3.SuspendLayout();
((System.ComponentModel.ISupportInitialize)(this.axMSComm1)).BeginInit();
this.SuspendLayout();
//
// groupBox1
//
this.groupBox1.Controls.Add(this.Cbbox_Stop);
this.groupBox1.Controls.Add(this.Cbbox_Parity);
this.groupBox1.Controls.Add(this.Cbbox_Databits);
this.groupBox1.Controls.Add(this.Cbbox_Bound);
this.groupBox1.Controls.Add(this.Cbbox_Port);
this.groupBox1.Controls.Add(this.label5);
this.groupBox1.Controls.Add(this.label4);
this.groupBox1.Controls.Add(this.label3);
this.groupBox1.Controls.Add(this.label2);
this.groupBox1.Controls.Add(this.label1);
this.groupBox1.Location = new System.Drawing.Point(0, 0);
this.groupBox1.Name = "groupBox1";
this.groupBox1.Size = new System.Drawing.Size(176, 208);
this.groupBox1.TabIndex = 0;
this.groupBox1.TabStop = false;
this.groupBox1.Text = "设置串口";
//
// Cbbox_Stop
//
this.Cbbox_Stop.Items.AddRange(new object[] {
"1",
"2"});
this.Cbbox_Stop.Location = new System.Drawing.Point(104, 176);
this.Cbbox_Stop.Name = "Cbbox_Stop";
this.Cbbox_Stop.Size = new System.Drawing.Size(64, 20);
this.Cbbox_Stop.TabIndex = 9;
this.Cbbox_Stop.Text = "1";
//
// Cbbox_Parity
//
this.Cbbox_Parity.Items.AddRange(new object[] {
"NONE",
"ODD",
"EVEN"});
this.Cbbox_Parity.Location = new System.Drawing.Point(104, 136);
this.Cbbox_Parity.Name = "Cbbox_Parity";
this.Cbbox_Parity.Size = new System.Drawing.Size(64, 20);
this.Cbbox_Parity.TabIndex = 8;
this.Cbbox_Parity.Text = "NONE";
//
// Cbbox_Databits
//
this.Cbbox_Databits.Items.AddRange(new object[] {
"8",
"7",
"6"});
this.Cbbox_Databits.Location = new System.Drawing.Point(104, 96);
this.Cbbox_Databits.Name = "Cbbox_Databits";
this.Cbbox_Databits.Size = new System.Drawing.Size(64, 20);
this.Cbbox_Databits.TabIndex = 7;
this.Cbbox_Databits.Text = "8";
//
// Cbbox_Bound
//
this.Cbbox_Bound.Items.AddRange(new object[] {
"300",
"600",
"1200",
"2400",
"4800",
"9600",
"19200",
"38400",
"43000"});
this.Cbbox_Bound.Location = new System.Drawing.Point(104, 56);
this.Cbbox_Bound.Name = "Cbbox_Bound";
this.Cbbox_Bound.Size = new System.Drawing.Size(64, 20);
this.Cbbox_Bound.TabIndex = 6;
this.Cbbox_Bound.Text = "9600";
// Cbbox_Port
//
this.Cbbox_Port.Location = new System.Drawing.Point(104, 16);
this.Cbbox_Port.Name = "Cbbox_Port";
this.Cbbox_Port.Size = new System.Drawing.Size(64, 20);
this.Cbbox_Port.TabIndex = 5;
//
// label5
//
this.label5.Location = new System.Drawing.Point(8, 176);
this.label5.Name = "label5";
this.label5.TabIndex = 4;
this.label5.Text = "停止位";
//
// label4
//
this.label4.Location = new System.Drawing.Point(8, 136);
this.label4.Name = "label4";
this.label4.TabIndex = 3;
this.label4.Text = "校验";
//
// label3
//
this.label3.Location = new System.Drawing.Point(8, 96);
this.label3.Name = "label3";
this.label3.TabIndex = 2;
this.label3.Text = "数据位";
//
// label2
//
this.label2.Location = new System.Drawing.Point(8, 56);
this.label2.Name = "label2";
this.label2.TabIndex = 1;
this.label2.Text = "波特率";
//
// label1
//
this.label1.Location = new System.Drawing.Point(8, 17);
this.label1.Name = "label1";
this.label1.TabIndex = 0;
this.label1.Text = "串口号";
//
// groupBox2
//
this.groupBox2.Controls.Add(this.Txtbox_Recev);
this.groupBox2.Location = new System.Drawing.Point(184, 8);
this.groupBox2.Name = "groupBox2";
this.groupBox2.Size = new System.Drawing.Size(488, 256);
this.groupBox2.TabIndex = 10;
this.groupBox2.TabStop = false;
this.groupBox2.Text = "接收区";
//
// Txtbox_Recev
//
this.Txtbox_Recev.Dock = System.Windows.Forms.DockStyle.Fill;
this.Txtbox_Recev.Location = new System.Drawing.Point(3, 17);
this.Txtbox_Recev.Multiline = true;
this.Txtbox_Recev.Name = "Txtbox_Recev";
this.Txtbox_Recev.ScrollBars = System.Windows.Forms.ScrollBars.Both;
this.Txtbox_Recev.Size = new System.Drawing.Size(482, 236);
this.Txtbox_Recev.TabIndex = 11;
this.Txtbox_Recev.Text = "";
//
// groupBox3
//
this.groupBox3.Controls.Add(this.Txtbox_Send);
this.groupBox3.Location = new System.Drawing.Point(184, 264);
this.groupBox3.Name = "groupBox3";
this.groupBox3.Size = new System.Drawing.Size(488, 144);
this.groupBox3.TabIndex = 11;
this.groupBox3.TabStop = false;
this.groupBox3.Text = "发送区";
//
// Txtbox_Send
//
this.Txtbox_Send.Dock = System.Windows.Forms.DockStyle.Fill;
this.Txtbox_Send.Location = new System.Drawing.Point(3, 17);
this.Txtbox_Send.Multiline = true;
this.Txtbox_Send.Name = "Txtbox_Send";
this.Txtbox_Send.ScrollBars = System.Windows.Forms.ScrollBars.Both;
this.Txtbox_Send.Size = new System.Drawing.Size(482, 124);
this.Txtbox_Send.TabIndex = 12;
this.Txtbox_Send.Text = "";
//
// Btn_Open
//
this.Btn_Open.Location = new System.Drawing.Point(56, 216);
this.Btn_Open.Name = "Btn_Open";
this.Btn_Open.TabIndex = 12;
this.Btn_Open.Text = "打开串口";
this.Btn_Open.Click += new System.EventHandler(this.Btn_Open_Click);
//
// Btn_Close
//
this.Btn_Close.Enabled = false;
this.Btn_Close.Location = new System.Drawing.Point(56, 248);
this.Btn_Close.Name = "Btn_Close";
this.Btn_Close.TabIndex = 13;
this.Btn_Close.Text = "关闭串口";
this.Btn_Close.Click += new System.EventHandler(this.Btn_Close_Click);
//
// Btn_Clear
//
this.Btn_Clear.Location = new System.Drawing.Point(56, 312);
this.Btn_Clear.Name = "Btn_Clear";
this.Btn_Clear.TabIndex = 14;
this.Btn_Clear.Text = "清空";
this.Btn_Clear.Click += new System.EventHandler(this.Btn_Clear_Click);
//
// Btn_Send
//
this.Btn_Send.Location = new System.Drawing.Point(56, 376);
this.Btn_Send.Name = "Btn_Send";
this.Btn_Send.TabIndex = 15;
this.Btn_Send.Text = "发送";
this.Btn_Send.Click += new System.EventHandler(this.Btn_Send_Click);
//
// axMSComm1
//
this.axMSComm1.Enabled = true;
this.axMSComm1.Location = new System.Drawing.Point(8, 240);
this.axMSComm1.Name = "axMSComm1";
this.axMSComm1.OcxState = ((System.Windows.Forms.AxHost.State)(resources.GetObject("axMSComm1.OcxState")));
this.axMSComm1.Size = new System.Drawing.Size(38, 38);
this.axMSComm1.TabIndex = 16;
this.axMSComm1.OnComm += new System.EventHandler(this.axMSComm1_OnComm);
//
// button1
//
this.button1.Location = new System.Drawing.Point(56, 344);
this.button1.Name = "button1";
this.button1.TabIndex = 17;
this.button1.Text = "保存";
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// button2
//
this.button2.Location = new System.Drawing.Point(56, 280);
this.button2.Name = "button2";
this.button2.TabIndex = 10;
this.button2.Text = "刷新";
this.button2.Click += new System.EventHandler(this.button2_Click);
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.ClientSize = new System.Drawing.Size(680, 413);
this.Controls.Add(this.button1);
this.Controls.Add(this.axMSComm1);
this.Controls.Add(this.Btn_Send);
this.Controls.Add(this.Btn_Clear);
this.Controls.Add(this.Btn_Close);
this.Controls.Add(this.Btn_Open);
this.Controls.Add(this.groupBox3);
this.Controls.Add(this.groupBox1);
this.Controls.Add(this.groupBox2);
this.Controls.Add(this.button2);
this.Name = "Form1";
this.Text = "Form1";
this.Load += new System.EventHandler(this.Form1_Load);
this.groupBox1.ResumeLayout(false);
this.groupBox2.ResumeLayout(false);
this.groupBox3.ResumeLayout(false);
((System.ComponentModel.ISupportInitialize)(this.axMSComm1)).EndInit();
this.ResumeLayout(false); }
#endregion
/// 应用程序的主入口点。
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
private void iniComm()
{
axMSComm1.CommPort=pport(Cbbox_Port.SelectedItem.ToString());
if (axMSComm1.PortOpen) axMSComm1.PortOpen = false;
axMSComm1.Settings=Cbbox_Bound.SelectedItem.ToString()+","+(Cbbox_Parity.SelectedItem.ToString()).Substring(0,1)+","+Cbbox_Databits.SelectedItem.ToString()+","+Cbbox_Stop.SelectedItem.ToString();
axMSComm1.RThreshold = 1;
axMSComm1.DTREnable = true;
axMSComm1.Handshaking = MSCommLib.HandshakeConstants.comNone;
axMSComm1.InputMode = MSCommLib.InputModeConstants.comInputModeText;
axMSComm1.InputLen = 0;
axMSComm1.NullDiscard = false;
axMSComm1.OnComm += new System.EventHandler(this.axMSComm1_OnComm);
try
{
axMSComm1.PortOpen = true;
open=true;
}
catch
{
MessageBox.Show("串口被占用或者不存在");
open=false;
}
}
private short pport(string a)
{
short b;
switch(a)
{
case "COM1":
b=1;break;
case "COM2":
b=2;break;
case "COM3":
b=3;break;
case "COM4":
b=4;break;
default: b=1;break;
}
return b;
} private void Btn_Open_Click(object sender, System.EventArgs e)
{
iniComm();
if(open==true)
{
setopen();
Btn_Open.Enabled=false;
Btn_Close.Enabled=true;
}
else return;
} private void axMSComm1_OnComm(object sender, System.EventArgs e)
{
if(!stop)
{
Thread b=new Thread(new ThreadStart(ProcessCom));
b.IsBackground=true;
b.Start();
}
}
private void ProcessCom()
{
if (axMSComm1.InBufferCount > 0) ProcessComData((string) axMSComm1.Input);
}
private void ProcessComData(string input)
{
// Send incoming data to a Rich Text Box
Txtbox_Recev.AppendText(input);
}
private void ProcessOutData(string output)
{
axMSComm1.Output=output;
} private void Btn_Close_Click(object sender, System.EventArgs e)
{
axMSComm1.PortOpen=false;
Btn_Open.Enabled=true;
Btn_Close.Enabled=false;
setclose();
} private void button1_Click(object sender, System.EventArgs e)
{
SaveMyFile();
Txtbox_Recev.Clear();
}
{
saveFileDialog1.Filter="文本文件(*.txt)|*.txt|所有文件|*.*";
saveFileDialog1.RestoreDirectory=true;
if(saveFileDialog1.ShowDialog()==DialogResult.OK)
{
fName=saveFileDialog1.FileName;
File.File fSaveAs=new File.File(fName);
fSaveAs.WriteFile(Txtbox_Recev.Text);
}
} private void Btn_Send_Click(object sender, System.EventArgs e)
{
stop=true;
if(stop)
{
Thread a=new Thread(new ThreadStart(ProcessOut));
a.IsBackground=true;
a.Start();
} //ProcessOutData(Txtbox_Send.Text);
stop=false;
}
private void ProcessOut()
{
ProcessOutData(Txtbox_Send.Text);
}
private void setopen()
{
Cbbox_Port.Enabled=false;
Cbbox_Bound.Enabled=false;
Cbbox_Databits.Enabled=false;
Cbbox_Parity.Enabled=false;
Cbbox_Stop.Enabled=false; }
private void setclose()
{
Cbbox_Port.Enabled=true;
Cbbox_Bound.Enabled=true;
Cbbox_Databits.Enabled=true;
Cbbox_Parity.Enabled=true;
Cbbox_Stop.Enabled=true; } private void Btn_Clear_Click(object sender, System.EventArgs e)
{
Txtbox_Recev.Clear();
Txtbox_Send.Clear();
} private void Form1_Load(object sender, System.EventArgs e)
{
testComm();
}
private void testComm()
{
for(short i=10;i>0;i--)
{
axMSComm1.CommPort=i;
try
{
axMSComm1.PortOpen=true;
}
catch
{
;
}
if(axMSComm1.PortOpen==true)
{
Cbbox_Port.Items.Add("COM"+i);
axMSComm1.PortOpen=false;
Cbbox_Port.Text="COM"+i;
} } } private void button2_Click(object sender, System.EventArgs e)
{
testComm(Cbbox_Port.Enabled);
}
private void testComm(bool a)
{
if(a==true)
{
Cbbox_Port.Items.Clear();
for(short i=10;i>0;i--)
{
axMSComm1.CommPort=i;
try
{
axMSComm1.PortOpen=true;
}
catch
{
;
}
if(axMSComm1.PortOpen==true)
{
Cbbox_Port.Items.Add("COM"+i);
axMSComm1.PortOpen=false;
Cbbox_Port.Text="COM"+i;
} }
} }
}
}