以前做过一段时间短信研究,找到一牛人写串口类，调试链接COM接口是成功的。
代码
1 using System;
2 using System.Runtime.InteropServices;
3
4 namespace OPE
5 {
6 public class JustinIO
7 {
8 public class CommPort
9 {
10
11 public string PortNum;
12 public int BaudRate;
13 public byte ByteSize;
14 public byte Parity; // 0-4=no,odd,even,mark,space
15 public byte StopBits; // 0,1,2 = 1, 1.5, 2
16 public int ReadTimeout;
17 public string CenterNumber;
18
19 //comm port win32 file handle
20 private int hComm = -1;
21
22 public bool Opened = false;
23
24 //win32 api constants
25 private const uint GENERIC_READ = 0x80000000;
26 private const uint GENERIC_WRITE = 0x40000000;
27 private const int OPEN_EXISTING = 3;
28 private const int INVALID_HANDLE_VALUE = -1;
29
30 [StructLayout(LayoutKind.Sequential)]
31 public struct DCB
32 {
33 //taken from c struct in platform sdk
34 public int DCBlength; // sizeof(DCB)
35 public int BaudRate; // 指定当前波特率 current baud rate
36 // these are the c struct bit fields, bit twiddle flag to set
37 public int fBinary; // 指定是否允许二进制模式,在windows95中必须主TRUE binary mode, no EOF check
38 public int fParity; // 指定是否允许奇偶校验 enable parity checking
39 public int fOutxCtsFlow; // 指定CTS是否用于检测发送控制，当为TRUE是CTS为OFF，发送将被挂起。 CTS output flow control
40 public int fOutxDsrFlow; // 指定CTS是否用于检测发送控制 DSR output flow control
41 public int fDtrControl; // DTR_CONTROL_DISABLE值将DTR置为OFF, DTR_CONTROL_ENABLE值将DTR置为ON, DTR_CONTROL_HANDSHAKE允许DTR"握手" DTR flow control type
42 public int fDsrSensitivity; // 当该值为TRUE时DSR为OFF时接收的字节被忽略 DSR sensitivity
43 public int fTXContinueOnXoff; // 指定当接收缓冲区已满,并且驱动程序已经发送出XoffChar字符时发送是否停止。TRUE时，在接收缓冲区接收到缓冲区已满的字节XoffLim且驱动程序已经发送出XoffChar字符中止接收字节之后，发送继续进行。 FALSE时，在接收缓冲区接收到代表缓冲区已空的字节XonChar且驱动程序已经发送出恢复发送的XonChar之后，发送继续进行。XOFF continues Tx
44 public int fOutX; // TRUE时，接收到XoffChar之后便停止发送接收到XonChar之后将重新开始 XON/XOFF out flow control
45 public int fInX; // TRUE时，接收缓冲区接收到代表缓冲区满的XoffLim之后，XoffChar发送出去接收缓冲区接收到代表缓冲区空的XonLim之后，XonChar发送出去 XON/XOFF in flow control
46 public int fErrorChar; // 该值为TRUE且fParity为TRUE时，用ErrorChar 成员指定的字符代替奇偶校验错误的接收字符 enable error replacement
47 public int fNull; // eTRUE时，接收时去掉空（0值）字节 enable null stripping
48 public int fRtsControl; // RTS flow control
49 /*RTS_CONTROL_DISABLE时,RTS置为OFF
50 RTS_CONTROL_ENABLE时, RTS置为ON
51 RTS_CONTROL_HANDSHAKE时,
52 当接收缓冲区小于半满时RTS为ON
53 当接收缓冲区超过四分之三满时RTS为OFF
54 RTS_CONTROL_TOGGLE时,
55 当接收缓冲区仍有剩余字节时RTS为ON ,否则缺省为OFF*/
56
57 public int fAbortOnError; // TRUE时,有错误发生时中止读和写操作 abort on error
58 public int fDummy2; // 未使用 reserved
59
60 public uint flags;
61 public ushort wReserved; // 未使用,必须为0 not currently used
62 public ushort XonLim; // 指定在XON字符发送这前接收缓冲区中可允许的最小字节数 transmit XON threshold
63 public ushort XoffLim; // 指定在XOFF字符发送这前接收缓冲区中可允许的最小字节数 transmit XOFF threshold
64 public byte ByteSize; // 指定端口当前使用的数据位 number of bits/byte, 4-8
65 public byte Parity; // 指定端口当前使用的奇偶校验方法,可能为:EVENPARITY,MARKPARITY,NOPARITY,ODDPARITY 0-4=no,odd,even,mark,space
66 public byte StopBits; // 指定端口当前使用的停止位数,可能为:ONESTOPBIT,ONE5STOPBITS,TWOSTOPBITS 0,1,2 = 1, 1.5, 2
67 public char XonChar; // 指定用于发送和接收字符XON的值 Tx and Rx XON character
68 public char XoffChar; // 指定用于发送和接收字符XOFF值 Tx and Rx XOFF character
69 public char ErrorChar; // 本字符用来代替接收到的奇偶校验发生错误时的值 error replacement character
70 public char EofChar; // 当没有使用二进制模式时,本字符可用来指示数据的结束 end of input character
71 public char EvtChar; // 当接收到此字符时,会产生一个事件 received event character
72 public ushort wReserved1; // 未使用 reserved; do not use
73 }
74
75 [StructLayout(LayoutKind.Sequential)]
76 private struct COMMTIMEOUTS
77 {
78 public int ReadIntervalTimeout;
79 public int ReadTotalTimeoutMultiplier;
80 public int ReadTotalTimeoutConstant;
81 public int WriteTotalTimeoutMultiplier;
82 public int WriteTotalTimeoutConstant;
83 }
84
85 [StructLayout(LayoutKind.Sequential)]
86 private struct OVERLAPPED
87 {
88 public int Internal;
89 public int InternalHigh;
90 public int Offset;
91 public int OffsetHigh;
92 public int hEvent;
93 }
94
95 [DllImport("kernel32.dll")]
96 private static extern int CreateFile(
97 string lpFileName, // 要打开的串口名称
98 uint dwDesiredAccess, // 指定串口的访问方式，一般设置为可读可写方式
99 int dwShareMode, // 指定串口的共享模式，串口不能共享，所以设置为0
100 int lpSecurityAttributes, // 设置串口的安全属性，WIN9X下不支持，应设为NULL
101 int dwCreationDisposition, // 对于串口通信，创建方式只能为OPEN_EXISTING
102 int dwFlagsAndAttributes, // 指定串口属性与标志，设置为FILE_FLAG_OVERLAPPED(重叠I/O操作)，指定串口以异步方式通信
103 int hTemplateFile // 对于串口通信必须设置为NULL
104 );
105 [DllImport("kernel32.dll")]
106 private static extern bool GetCommState(
107 int hFile, //通信设备句柄
108 ref DCB lpDCB // 设备控制块DCB
109 );
110 [DllImport("kernel32.dll")]
111 private static extern bool BuildCommDCB(
112 string lpDef, // 设备控制字符串
113 ref DCB lpDCB // 设备控制块
114 );
115 [DllImport("kernel32.dll")]
116 private static extern bool SetCommState(
117 int hFile, // 通信设备句柄
118 ref DCB lpDCB // 设备控制块
119 );
120 [DllImport("kernel32.dll")]
121 private static extern bool GetCommTimeouts(
122 int hFile, // 通信设备句柄 handle to comm device
123 ref COMMTIMEOUTS lpCommTimeouts // 超时时间 time-out values
124 );
125 [DllImport("kernel32.dll")]
126 private static extern bool SetCommTimeouts(
127 int hFile, // 通信设备句柄 handle to comm device
128 ref COMMTIMEOUTS lpCommTimeouts // 超时时间 time-out values
129 );
130 [DllImport("kernel32.dll")]
131 private static extern bool ReadFile(
132 int hFile, // 通信设备句柄 handle to file
133 byte[] lpBuffer, // 数据缓冲区 data buffer
134 int nNumberOfBytesToRead, // 多少字节等待读取 number of bytes to read
135 ref int lpNumberOfBytesRead, // 读取多少字节 number of bytes read
136 ref OVERLAPPED lpOverlapped // 溢出缓冲区 overlapped buffer
137 );
138 [DllImport("kernel32.dll")]
139 private static extern bool WriteFile(
140 int hFile, // 通信设备句柄 handle to file
141 byte[] lpBuffer, // 数据缓冲区 data buffer
142 int nNumberOfBytesToWrite, // 多少字节等待写入 number of bytes to write
143 ref int lpNumberOfBytesWritten, // 已经写入多少字节 number of bytes written
144 ref OVERLAPPED lpOverlapped // 溢出缓冲区 overlapped buffer
145 );
146 [DllImport("kernel32.dll")]
147 private static extern bool CloseHandle(
148 int hObject // handle to object
149 );
150 [DllImport("kernel32.dll")]
151 private static extern uint GetLastError();
152
153 public void Open()
154 {
155
156 DCB dcbCommPort = new DCB();
157 COMMTIMEOUTS ctoCommPort = new COMMTIMEOUTS();
158
159 // 打开串口 OPEN THE COMM PORT.
160 hComm = CreateFile(PortNum ,GENERIC_READ | GENERIC_WRITE,0, 0,OPEN_EXISTING,0,0);
161 // 如果串口没有打开，就打开 IF THE PORT CANNOT BE OPENED, BAIL OUT.
162 if(hComm == INVALID_HANDLE_VALUE)
163 {
164 throw(new ApplicationException("非法操作，不能打开串口！"));
165 }
166
167 // 设置通信超时时间 SET THE COMM TIMEOUTS.
168 GetCommTimeouts(hComm,ref ctoCommPort);
169 ctoCommPort.ReadTotalTimeoutConstant = ReadTimeout;
170 ctoCommPort.ReadTotalTimeoutMultiplier = 0;
171 ctoCommPort.WriteTotalTimeoutMultiplier = 0;
172 ctoCommPort.WriteTotalTimeoutConstant = 0;
173 SetCommTimeouts(hComm,ref ctoCommPort);
174
175 // 设置串口 SET BAUD RATE, PARITY, WORD SIZE, AND STOP BITS.
176 GetCommState(hComm, ref dcbCommPort);
177 dcbCommPort.BaudRate=BaudRate;
178 dcbCommPort.flags=0;
179 //dcb.fBinary=1;
180 dcbCommPort.flags|=1;
181 if (Parity>0)
182 {
183 //dcb.fParity=1
184 dcbCommPort.flags|=2;
185 }
186 dcbCommPort.Parity=Parity;
187 dcbCommPort.ByteSize=ByteSize;
188 dcbCommPort.StopBits=StopBits;
189 //if (!BuildCommDCB("9600,n,8,1 ", ref dcbCommPort))
190 //{
191 // throw (new ApplicationException("非法操作，不能打开串口！ "));
192 //}
193
194 if (!SetCommState(hComm, ref dcbCommPort))
195 {
196 //uint ErrorNum=GetLastError();
197 throw(new ApplicationException("非法操作，不能打开串口！"));
198 }
199 //unremark to see if setting took correctly
200 //DCB dcbCommPort2 = new DCB();
201 //GetCommState(hComm, ref dcbCommPort2);
202 Opened = true;
203 }
204
205 public void Close()
206 {
207 if (hComm!=INVALID_HANDLE_VALUE)
208 {
209 CloseHandle(hComm);
210 }
211 }
212
213 public byte[] Read(int NumBytes)
214 {
215 byte[] BufBytes;
216 byte[] OutBytes;
217 BufBytes = new byte[NumBytes];
218 if (hComm!=INVALID_HANDLE_VALUE)
219 {
220 OVERLAPPED ovlCommPort = new OVERLAPPED();
221 int BytesRead=0;
222 ReadFile(hComm,BufBytes,NumBytes,ref BytesRead,ref ovlCommPort);
223 OutBytes = new byte[BytesRead];
224 Array.Copy(BufBytes,OutBytes,BytesRead);
225 }
226 else
227 {
228 throw(new ApplicationException("串口未打开！"));
229 }
230 return OutBytes;
231 }
232
233 public void Write(byte[] WriteBytes)
234 {
235 if (hComm!=INVALID_HANDLE_VALUE)
236 {
237 OVERLAPPED ovlCommPort = new OVERLAPPED();
238 int BytesWritten = 0;
239 WriteFile(hComm,WriteBytes,WriteBytes.Length,ref BytesWritten,ref ovlCommPort);
240 }
241 else
242 {
243 throw(new ApplicationException("串口未打开！"));
244 }
245 }
246 }
247
248 public class HexCon
249 {
250 // 把十六进制字符串转换成字节型和把字节型转换成十六进制字符串 converter hex string to byte and byte to hex string
251 public static string ByteToString(byte[] InBytes)
252 {
253 string StringOut="";
254 foreach (byte InByte in InBytes)
255 {
256 StringOut=StringOut + String.Format("{0:X2} ",InByte);
257 }
258 return StringOut;
259 }
260 public static byte[] StringToByte(string InString)
261 {
262 string[] ByteStrings;
263 ByteStrings = InString.Split(" ".ToCharArray());
264 byte[] ByteOut;
265 ByteOut = new byte[ByteStrings.Length-1];
266 for (int i = 0;i==ByteStrings.Length-1;i++)
267 {
268 ByteOut[i] = Convert.ToByte(("0x" + ByteStrings[i]));
269 }
270 return ByteOut;
271 }
272 }
273 }
274 }
275
276
2 using System.Runtime.InteropServices;
3
4 namespace OPE
5 {
6 public class JustinIO
7 {
8 public class CommPort
9 {
10
11 public string PortNum;
12 public int BaudRate;
13 public byte ByteSize;
14 public byte Parity; // 0-4=no,odd,even,mark,space
15 public byte StopBits; // 0,1,2 = 1, 1.5, 2
16 public int ReadTimeout;
17 public string CenterNumber;
18
19 //comm port win32 file handle
20 private int hComm = -1;
21
22 public bool Opened = false;
23
24 //win32 api constants
25 private const uint GENERIC_READ = 0x80000000;
26 private const uint GENERIC_WRITE = 0x40000000;
27 private const int OPEN_EXISTING = 3;
28 private const int INVALID_HANDLE_VALUE = -1;
29
30 [StructLayout(LayoutKind.Sequential)]
31 public struct DCB
32 {
33 //taken from c struct in platform sdk
34 public int DCBlength; // sizeof(DCB)
35 public int BaudRate; // 指定当前波特率 current baud rate
36 // these are the c struct bit fields, bit twiddle flag to set
37 public int fBinary; // 指定是否允许二进制模式,在windows95中必须主TRUE binary mode, no EOF check
38 public int fParity; // 指定是否允许奇偶校验 enable parity checking
39 public int fOutxCtsFlow; // 指定CTS是否用于检测发送控制，当为TRUE是CTS为OFF，发送将被挂起。 CTS output flow control
40 public int fOutxDsrFlow; // 指定CTS是否用于检测发送控制 DSR output flow control
41 public int fDtrControl; // DTR_CONTROL_DISABLE值将DTR置为OFF, DTR_CONTROL_ENABLE值将DTR置为ON, DTR_CONTROL_HANDSHAKE允许DTR"握手" DTR flow control type
42 public int fDsrSensitivity; // 当该值为TRUE时DSR为OFF时接收的字节被忽略 DSR sensitivity
43 public int fTXContinueOnXoff; // 指定当接收缓冲区已满,并且驱动程序已经发送出XoffChar字符时发送是否停止。TRUE时，在接收缓冲区接收到缓冲区已满的字节XoffLim且驱动程序已经发送出XoffChar字符中止接收字节之后，发送继续进行。 FALSE时，在接收缓冲区接收到代表缓冲区已空的字节XonChar且驱动程序已经发送出恢复发送的XonChar之后，发送继续进行。XOFF continues Tx
44 public int fOutX; // TRUE时，接收到XoffChar之后便停止发送接收到XonChar之后将重新开始 XON/XOFF out flow control
45 public int fInX; // TRUE时，接收缓冲区接收到代表缓冲区满的XoffLim之后，XoffChar发送出去接收缓冲区接收到代表缓冲区空的XonLim之后，XonChar发送出去 XON/XOFF in flow control
46 public int fErrorChar; // 该值为TRUE且fParity为TRUE时，用ErrorChar 成员指定的字符代替奇偶校验错误的接收字符 enable error replacement
47 public int fNull; // eTRUE时，接收时去掉空（0值）字节 enable null stripping
48 public int fRtsControl; // RTS flow control
49 /*RTS_CONTROL_DISABLE时,RTS置为OFF
50 RTS_CONTROL_ENABLE时, RTS置为ON
51 RTS_CONTROL_HANDSHAKE时,
52 当接收缓冲区小于半满时RTS为ON
53 当接收缓冲区超过四分之三满时RTS为OFF
54 RTS_CONTROL_TOGGLE时,
55 当接收缓冲区仍有剩余字节时RTS为ON ,否则缺省为OFF*/
56
57 public int fAbortOnError; // TRUE时,有错误发生时中止读和写操作 abort on error
58 public int fDummy2; // 未使用 reserved
59
60 public uint flags;
61 public ushort wReserved; // 未使用,必须为0 not currently used
62 public ushort XonLim; // 指定在XON字符发送这前接收缓冲区中可允许的最小字节数 transmit XON threshold
63 public ushort XoffLim; // 指定在XOFF字符发送这前接收缓冲区中可允许的最小字节数 transmit XOFF threshold
64 public byte ByteSize; // 指定端口当前使用的数据位 number of bits/byte, 4-8
65 public byte Parity; // 指定端口当前使用的奇偶校验方法,可能为:EVENPARITY,MARKPARITY,NOPARITY,ODDPARITY 0-4=no,odd,even,mark,space
66 public byte StopBits; // 指定端口当前使用的停止位数,可能为:ONESTOPBIT,ONE5STOPBITS,TWOSTOPBITS 0,1,2 = 1, 1.5, 2
67 public char XonChar; // 指定用于发送和接收字符XON的值 Tx and Rx XON character
68 public char XoffChar; // 指定用于发送和接收字符XOFF值 Tx and Rx XOFF character
69 public char ErrorChar; // 本字符用来代替接收到的奇偶校验发生错误时的值 error replacement character
70 public char EofChar; // 当没有使用二进制模式时,本字符可用来指示数据的结束 end of input character
71 public char EvtChar; // 当接收到此字符时,会产生一个事件 received event character
72 public ushort wReserved1; // 未使用 reserved; do not use
73 }
74
75 [StructLayout(LayoutKind.Sequential)]
76 private struct COMMTIMEOUTS
77 {
78 public int ReadIntervalTimeout;
79 public int ReadTotalTimeoutMultiplier;
80 public int ReadTotalTimeoutConstant;
81 public int WriteTotalTimeoutMultiplier;
82 public int WriteTotalTimeoutConstant;
83 }
84
85 [StructLayout(LayoutKind.Sequential)]
86 private struct OVERLAPPED
87 {
88 public int Internal;
89 public int InternalHigh;
90 public int Offset;
91 public int OffsetHigh;
92 public int hEvent;
93 }
94
95 [DllImport("kernel32.dll")]
96 private static extern int CreateFile(
97 string lpFileName, // 要打开的串口名称
98 uint dwDesiredAccess, // 指定串口的访问方式，一般设置为可读可写方式
99 int dwShareMode, // 指定串口的共享模式，串口不能共享，所以设置为0
100 int lpSecurityAttributes, // 设置串口的安全属性，WIN9X下不支持，应设为NULL
101 int dwCreationDisposition, // 对于串口通信，创建方式只能为OPEN_EXISTING
102 int dwFlagsAndAttributes, // 指定串口属性与标志，设置为FILE_FLAG_OVERLAPPED(重叠I/O操作)，指定串口以异步方式通信
103 int hTemplateFile // 对于串口通信必须设置为NULL
104 );
105 [DllImport("kernel32.dll")]
106 private static extern bool GetCommState(
107 int hFile, //通信设备句柄
108 ref DCB lpDCB // 设备控制块DCB
109 );
110 [DllImport("kernel32.dll")]
111 private static extern bool BuildCommDCB(
112 string lpDef, // 设备控制字符串
113 ref DCB lpDCB // 设备控制块
114 );
115 [DllImport("kernel32.dll")]
116 private static extern bool SetCommState(
117 int hFile, // 通信设备句柄
118 ref DCB lpDCB // 设备控制块
119 );
120 [DllImport("kernel32.dll")]
121 private static extern bool GetCommTimeouts(
122 int hFile, // 通信设备句柄 handle to comm device
123 ref COMMTIMEOUTS lpCommTimeouts // 超时时间 time-out values
124 );
125 [DllImport("kernel32.dll")]
126 private static extern bool SetCommTimeouts(
127 int hFile, // 通信设备句柄 handle to comm device
128 ref COMMTIMEOUTS lpCommTimeouts // 超时时间 time-out values
129 );
130 [DllImport("kernel32.dll")]
131 private static extern bool ReadFile(
132 int hFile, // 通信设备句柄 handle to file
133 byte[] lpBuffer, // 数据缓冲区 data buffer
134 int nNumberOfBytesToRead, // 多少字节等待读取 number of bytes to read
135 ref int lpNumberOfBytesRead, // 读取多少字节 number of bytes read
136 ref OVERLAPPED lpOverlapped // 溢出缓冲区 overlapped buffer
137 );
138 [DllImport("kernel32.dll")]
139 private static extern bool WriteFile(
140 int hFile, // 通信设备句柄 handle to file
141 byte[] lpBuffer, // 数据缓冲区 data buffer
142 int nNumberOfBytesToWrite, // 多少字节等待写入 number of bytes to write
143 ref int lpNumberOfBytesWritten, // 已经写入多少字节 number of bytes written
144 ref OVERLAPPED lpOverlapped // 溢出缓冲区 overlapped buffer
145 );
146 [DllImport("kernel32.dll")]
147 private static extern bool CloseHandle(
148 int hObject // handle to object
149 );
150 [DllImport("kernel32.dll")]
151 private static extern uint GetLastError();
152
153 public void Open()
154 {
155
156 DCB dcbCommPort = new DCB();
157 COMMTIMEOUTS ctoCommPort = new COMMTIMEOUTS();
158
159 // 打开串口 OPEN THE COMM PORT.
160 hComm = CreateFile(PortNum ,GENERIC_READ | GENERIC_WRITE,0, 0,OPEN_EXISTING,0,0);
161 // 如果串口没有打开，就打开 IF THE PORT CANNOT BE OPENED, BAIL OUT.
162 if(hComm == INVALID_HANDLE_VALUE)
163 {
164 throw(new ApplicationException("非法操作，不能打开串口！"));
165 }
166
167 // 设置通信超时时间 SET THE COMM TIMEOUTS.
168 GetCommTimeouts(hComm,ref ctoCommPort);
169 ctoCommPort.ReadTotalTimeoutConstant = ReadTimeout;
170 ctoCommPort.ReadTotalTimeoutMultiplier = 0;
171 ctoCommPort.WriteTotalTimeoutMultiplier = 0;
172 ctoCommPort.WriteTotalTimeoutConstant = 0;
173 SetCommTimeouts(hComm,ref ctoCommPort);
174
175 // 设置串口 SET BAUD RATE, PARITY, WORD SIZE, AND STOP BITS.
176 GetCommState(hComm, ref dcbCommPort);
177 dcbCommPort.BaudRate=BaudRate;
178 dcbCommPort.flags=0;
179 //dcb.fBinary=1;
180 dcbCommPort.flags|=1;
181 if (Parity>0)
182 {
183 //dcb.fParity=1
184 dcbCommPort.flags|=2;
185 }
186 dcbCommPort.Parity=Parity;
187 dcbCommPort.ByteSize=ByteSize;
188 dcbCommPort.StopBits=StopBits;
189 //if (!BuildCommDCB("9600,n,8,1 ", ref dcbCommPort))
190 //{
191 // throw (new ApplicationException("非法操作，不能打开串口！ "));
192 //}
193
194 if (!SetCommState(hComm, ref dcbCommPort))
195 {
196 //uint ErrorNum=GetLastError();
197 throw(new ApplicationException("非法操作，不能打开串口！"));
198 }
199 //unremark to see if setting took correctly
200 //DCB dcbCommPort2 = new DCB();
201 //GetCommState(hComm, ref dcbCommPort2);
202 Opened = true;
203 }
204
205 public void Close()
206 {
207 if (hComm!=INVALID_HANDLE_VALUE)
208 {
209 CloseHandle(hComm);
210 }
211 }
212
213 public byte[] Read(int NumBytes)
214 {
215 byte[] BufBytes;
216 byte[] OutBytes;
217 BufBytes = new byte[NumBytes];
218 if (hComm!=INVALID_HANDLE_VALUE)
219 {
220 OVERLAPPED ovlCommPort = new OVERLAPPED();
221 int BytesRead=0;
222 ReadFile(hComm,BufBytes,NumBytes,ref BytesRead,ref ovlCommPort);
223 OutBytes = new byte[BytesRead];
224 Array.Copy(BufBytes,OutBytes,BytesRead);
225 }
226 else
227 {
228 throw(new ApplicationException("串口未打开！"));
229 }
230 return OutBytes;
231 }
232
233 public void Write(byte[] WriteBytes)
234 {
235 if (hComm!=INVALID_HANDLE_VALUE)
236 {
237 OVERLAPPED ovlCommPort = new OVERLAPPED();
238 int BytesWritten = 0;
239 WriteFile(hComm,WriteBytes,WriteBytes.Length,ref BytesWritten,ref ovlCommPort);
240 }
241 else
242 {
243 throw(new ApplicationException("串口未打开！"));
244 }
245 }
246 }
247
248 public class HexCon
249 {
250 // 把十六进制字符串转换成字节型和把字节型转换成十六进制字符串 converter hex string to byte and byte to hex string
251 public static string ByteToString(byte[] InBytes)
252 {
253 string StringOut="";
254 foreach (byte InByte in InBytes)
255 {
256 StringOut=StringOut + String.Format("{0:X2} ",InByte);
257 }
258 return StringOut;
259 }
260 public static byte[] StringToByte(string InString)
261 {
262 string[] ByteStrings;
263 ByteStrings = InString.Split(" ".ToCharArray());
264 byte[] ByteOut;
265 ByteOut = new byte[ByteStrings.Length-1];
266 for (int i = 0;i==ByteStrings.Length-1;i++)
267 {
268 ByteOut[i] = Convert.ToByte(("0x" + ByteStrings[i]));
269 }
270 return ByteOut;
271 }
272 }
273 }
274 }
275
276
来源：https://www.cnblogs.com/fship/archive/2009/12/04/1616746.html