C# 调用文件

Posted 2023-05-13

我想知道一下如何运用C#语言来编程调用GPS中的相关文件，
或者给与一些相关的C#编程的相关建议。谢谢

C# 读取GPS基类
using System;
using System.Runtime.InteropServices;
using System.Text;
namespace BaseStationPDA

class GPS

public string PortNum;
public int BaudRate;
public byte ByteSize;
public byte Parity; // 0-4=no,odd,even,mark,space
public byte StopBits; // 0,1,2 = 1, 1.5, 2
public int ReadTimeout;

//comm port win32 file handle
private int hComm = -1;

public bool Opened = false;

//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;

[StructLayout(LayoutKind.Sequential)]
public struct DCB

//taken from c struct in platform sdk
public int DCBlength; // sizeof(DCB)
public int BaudRate; // 指定当前波特率 current baud rate
// these are the c struct bit fields, bit twiddle flag to set
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
public int fParity; // 指定是否允许奇偶校验 enable parity checking
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
public int fOutxDsrFlow; // 指定CTS是否用于检测发送控制 DSR output flow control
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
public int fDsrSensitivity; // 当该值为TRUE时DSR为OFF时接收的字节被忽略 DSR sensitivity
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
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
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
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
public int fNull; // eTRUE时，接收时去掉空（0值）字节 enable null stripping
public int fRtsControl; // RTS flow control
/*RTS_CONTROL_DISABLE时,RTS置为OFF
RTS_CONTROL_ENABLE时, RTS置为ON
RTS_CONTROL_HANDSHAKE时,
当接收缓冲区小于半满时RTS为ON
当接收缓冲区超过四分之三满时RTS为OFF
RTS_CONTROL_TOGGLE时,
当接收缓冲区仍有剩余字节时RTS为ON ,否则缺省为OFF*/
public int fAbortOnError; // TRUE时,有错误发生时中止读和写操作 abort on error
public int fDummy2; // 未使用 reserved

public uint flags;
public ushort wReserved; // 未使用,必须为0 not currently used
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
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
public byte ByteSize; // 指定端口当前使用的数据位 number of bits/byte, 4-8
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
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
public char XonChar; // 指定用于发送和接收字符XON的值 Tx and Rx XON character
public char XoffChar; // 指定用于发送和接收字符XOFF值 Tx and Rx XOFF character
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
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
public char EvtChar; // 当接收到此字符时,会产生一个事件 received event character
public ushort wReserved1; // 未使用 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;


[DllImport("coredll.dll")]
private static extern int CreateFile(
string lpFileName, // 要打开的串口名称
uint dwDesiredAccess, // 指定串口的访问方式，一般设置为可读可写方式
int dwShareMode, // 指定串口的共享模式，串口不能共享，所以设置为0
int lpSecurityAttributes, // 设置串口的安全属性，WIN9X下不支持，应设为NULL
int dwCreationDisposition, // 对于串口通信，创建方式只能为OPEN_EXISTING
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
int hTemplateFile // 对于串口通信必须设置为NULL
);
[DllImport("coredll.dll")]
private static extern bool GetCommState(
int hFile, //通信设备句柄
ref DCB lpDCB // 设备控制块DCB
);
[DllImport("coredll.dll")]
private static extern bool BuildCommDCB(
string lpDef, // 设备控制字符串
ref DCB lpDCB // 设备控制块
);
[DllImport("coredll.dll")]
private static extern bool SetCommState(
int hFile, // 通信设备句柄
ref DCB lpDCB // 设备控制块
);
[DllImport("coredll.dll")]
private static extern bool GetCommTimeouts(
int hFile, // 通信设备句柄 handle to comm device
ref COMMTIMEOUTS lpCommTimeouts // 超时时间 time-out values
);
[DllImport("coredll.dll")]
private static extern bool SetCommTimeouts(
int hFile, // 通信设备句柄 handle to comm device
ref COMMTIMEOUTS lpCommTimeouts // 超时时间 time-out values
);
[DllImport("coredll.dll")]
private static extern bool ReadFile(
int hFile, // 通信设备句柄 handle to file
byte[] lpBuffer, // 数据缓冲区 data buffer
int nNumberOfBytesToRead, // 多少字节等待读取 number of bytes to read
ref int lpNumberOfBytesRead, // 读取多少字节 number of bytes read
ref OVERLAPPED lpOverlapped // 溢出缓冲区 overlapped buffer
);
[DllImport("coredll.dll")]
private static extern bool WriteFile(
int hFile, // 通信设备句柄 handle to file
byte[] lpBuffer, // 数据缓冲区 data buffer
int nNumberOfBytesToWrite, // 多少字节等待写入 number of bytes to write
ref int lpNumberOfBytesWritten, // 已经写入多少字节 number of bytes written
ref OVERLAPPED lpOverlapped // 溢出缓冲区 overlapped buffer
);
[DllImport("coredll.dll")]
private static extern bool CloseHandle(
int hObject // handle to object
);
[DllImport("coredll.dll")]
private static extern uint GetLastError();

public void Open()


DCB dcbCommPort = new DCB();
COMMTIMEOUTS ctoCommPort = new COMMTIMEOUTS();

// 打开串口 OPEN THE COMM PORT.
hComm = CreateFile(PortNum ,GENERIC_READ | GENERIC_WRITE,0, 0,OPEN_EXISTING,0,0);
// 如果串口没有打开，就打开 IF THE PORT CANNOT BE OPENED, BAIL OUT.
if(hComm == INVALID_HANDLE_VALUE)

throw(new ApplicationException("非法操作，不能打开串口！"));


// 设置通信超时时间 SET THE COMM TIMEOUTS.
GetCommTimeouts(hComm,ref ctoCommPort);
ctoCommPort.ReadTotalTimeoutConstant = ReadTimeout;
ctoCommPort.ReadTotalTimeoutMultiplier = 0;
ctoCommPort.WriteTotalTimeoutMultiplier = 0;
ctoCommPort.WriteTotalTimeoutConstant = 0;
SetCommTimeouts(hComm,ref ctoCommPort);

// 设置串口 SET BAUD RATE, PARITY, WORD SIZE, AND STOP BITS.
GetCommState(hComm, ref dcbCommPort);
dcbCommPort.BaudRate=BaudRate;
dcbCommPort.flags=0;
//dcb.fBinary=1;
dcbCommPort.flags|=1;
if (Parity>0)

//dcb.fParity=1
dcbCommPort.flags|=2;

dcbCommPort.Parity=Parity;
dcbCommPort.ByteSize=ByteSize;
dcbCommPort.StopBits=StopBits;
if (!SetCommState(hComm, ref dcbCommPort))

//uint ErrorNum=GetLastError();
throw(new ApplicationException("非法操作，不能打开串口！"));

//unremark to see if setting took correctly
//DCB dcbCommPort2 = new DCB();
//GetCommState(hComm, ref dcbCommPort2);
Opened = true;


public void Close()

if (hComm!=INVALID_HANDLE_VALUE)

CloseHandle(hComm);



public byte[] Read(int NumBytes)

byte[] BufBytes;
byte[] OutBytes;
BufBytes = new byte[NumBytes];
if (hComm!=INVALID_HANDLE_VALUE)

OVERLAPPED ovlCommPort = new OVERLAPPED();
int BytesRead=0;
ReadFile(hComm,BufBytes,NumBytes,ref BytesRead,ref ovlCommPort);
try

OutBytes = new byte[BytesRead];
Array.Copy(BufBytes,0,OutBytes,0,BytesRead);

catch

return BufBytes;



else

throw(new ApplicationException("串口未打开！"));

return OutBytes;
// return BufBytes;


public void Write(byte[] WriteBytes)

if (hComm!=INVALID_HANDLE_VALUE)

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

else

throw(new ApplicationException("串口未打开！"));


public string GetGPS(string strGPS,string strFind)

///从GPS中读取的数据中,找出想要的数据
///GPSstring原始字符串，
///strFind要查找的内容,X:经度，Y：纬度，T：时间，V：速度，是数字从1开始，即以“，”分隔的位置
///返回查找到指定位置的字符串
string handerStr="$GPRMC";//GPS串头
int findHander=strGPS.IndexOf(handerStr);//看是否含有GPS串头
if (findHander<0)

return "-1";

else

strGPS=strGPS.Substring(findHander,strGPS.Length-findHander);
string[] ArryTmp=strGPS.Split(",".ToCharArray());
try

if(ArryTmp[2]=="V")

return "V";//没有信号

else

switch(strFind)

case "X":
return DM2DD(ArryTmp[5]);

case "Y":
return DM2DD(ArryTmp[3]);

case "T":
return T2Time(ArryTmp[9],ArryTmp[1]);

case "V":
return Convert.ToString(Convert.ToDouble(ArryTmp[7])* 1.852);

default:
return "V";




catch

return "V";



public string T2Time(string strDate,string strTime)

string dT="20"+strDate.Substring(4,2)+"-"+strDate.Substring(2,2)+"-"+strDate.Substring(0,2);
string TT=Convert.ToString(Convert.ToInt32(strTime.Substring(0,2)))+":"+strTime.Substring(2,2)+":"+strTime.Substring(4,2);
DateTime T=Convert.ToDateTime(dT+" "+TT);
T=T.AddHours(8);
return T.ToString();

public string DM2DD(string DegreeMinutes)

//转换NMEA协议的“度分”格式为十进制“度度”格式
string sDegree;
string sMinute;
string sReturn="";
if(DegreeMinutes.IndexOf(".")==4)

//DegreeMinutes = Replace(DegreeMinutes, ".", "")
//DM2DD = CDbl(Left(DegreeMinutes, 2)) + CDbl(Left(CStr(CDbl(Right(DegreeMinutes, Len(DegreeMinutes) - 2)) / 60), 8)) / 10000
DegreeMinutes=DegreeMinutes.Replace(".","");
double sDegree1=Convert.ToDouble(DegreeMinutes.Substring(0,2));
double sDegree2=Convert.ToDouble(DegreeMinutes.Substring(2,DegreeMinutes.Length-2));
string sTmp=Convert.ToString(sDegree2/60);
sDegree2=Convert.ToDouble(sTmp.Substring(0,sTmp.Length));
sDegree2=sDegree2/10000;
sDegree=Convert.ToString(sDegree1+sDegree2);
if(sDegree.Length>11)
sDegree=sDegree.Substring(0,11);
sReturn=sDegree;

else if(DegreeMinutes.IndexOf(".")==5)

//DegreeMinutes = Replace(DegreeMinutes, ".", "")
//DM2DD = CDbl(Left(DegreeMinutes, 2)) + CDbl(Left(CStr(CDbl(Right(DegreeMinutes, Len(DegreeMinutes) - 2)) / 60), 8)) / 10000
DegreeMinutes=DegreeMinutes.Replace(".","");
double sMinute1=Convert.ToDouble(DegreeMinutes.Substring(0,3));
double sMinute2=Convert.ToDouble(DegreeMinutes.Substring(3,DegreeMinutes.Length-2));
string sTmp=Convert.ToString(sMinute2/60);
sMinute2=Convert.ToDouble(sTmp.Substring(0,sTmp.Length));
sMinute2=sMinute2/10000;
sMinute=Convert.ToString(sMinute1+sMinute2);
if(sMinute.Length>10)
sMinute=sMinute.Substring(0,10);
sReturn=sMinute;

return sReturn;

public bool ScanPort()


try

if (Opened)

Close();
Open();

else

Open();//打开串口


byte[] bytRead=Read(512);
Close();
if(Encoding.ASCII.GetString(bytRead,0,bytRead.Length).IndexOf("$GP")>=0)
return true;
else
return false;

catch

return false;



class HexCon

// 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
public static string ByteToString(byte[] InBytes)

string StringOut="";
foreach (byte InByte in InBytes)

StringOut=StringOut + String.Format("0:X2 ",InByte);

return StringOut;

public static byte[] StringToByte(string InString)

string[] ByteStrings;
ByteStrings = InString.Split(" ".ToCharArray());
byte[] ByteOut;
ByteOut = new byte[ByteStrings.Length-1];
for (int i = 0;i==ByteStrings.Length-1;i++)

ByteOut[i] = Convert.ToByte(("0x" + ByteStrings[i]));

return ByteOut;



在别的class中调用时如Frmlogoin(是通过一个时间控件来循环的)
public class Frmlogin : System.Windows.Forms.Form

private GPS ss_port=new GPS();

#region 读取GPS
private void opengps(string ComPoint)

ss_port.PortNum = ComPoint;
ss_port.BaudRate = 4800;
ss_port.ByteSize = 8;
ss_port.Parity = 0;
ss_port.StopBits = 1;
ss_port.ReadTimeout = 1000;
try

if (ss_port.Opened)

ss_port.Close();
ss_port.Open();
timer1.Enabled=true;

else

ss_port.Open();//打开串口
timer1.Enabled=true;



catch


// MessageBox.Show("读取GPS错误!" ,"系统提示");



private void timer1_Tick(object sender, System.EventArgs e)


if (ss_port.Opened)
gpsread();
else
ss_port.Open();//打开串口


private void gpsread()

byte[] aa=ss_port.Read(512);
string gpsinfo =System.Text.Encoding.ASCII.GetString(aa,0,aa.Length);
GetParam.GpsLongitude=ss_port.GetGPS(gpsinfo,"X");
GetParam.GpsLatitude=ss_port.GetGPS(gpsinfo,"Y");
GetParam.GpsSpeed=ss_port.GetGPS(gpsinfo,"V");
GetParam.GpsTime=ss_port.GetGPS(gpsinfo,"T");
if(GetParam.GpsLongitude=="-1")
GetParam.GpsState="0";
if(GetParam.GpsLongitude=="V" && GetParam.GpsLatitude=="V")
GetParam.GpsState="0";
if(GetParam.GpsLongitude!="-1" && GetParam.GpsLongitude!="V")
GetParam.GpsState="1";
GetParam.GpsLongitude=(GetParam.GpsLongitude=="V") ? "0" : GetParam.GpsLongitude;
GetParam.GpsLatitude=(GetParam.GpsLatitude=="V") ? "0" : GetParam.GpsLatitude;
GetParam.GpsSpeed=(GetParam.GpsSpeed=="V") ? "0" : GetParam.GpsSpeed;
GetParam.GpsTime=(GetParam.GpsTime=="V") ? "0" :GetParam.GpsTime;


private void GpsClose()

timer1.Enabled=false;
if (ss_port.Opened)
ss_port.Close();

#endregion 参考技术A FIle 对象

c#编程添加引用dll文件后怎样调用

使用matlab编写生成的dll文件

如果这是个用c#编写的dll文件，那么

using DLL文件的命名空间，然后就可以调用命名空间中的类。

如果是不是用c#编写的dll文件，那么就把dll放到合适位置（winform程序目录下，web程序bin文件夹下，system32文件夹下，）然后

using System.Runtime.InteropServices;

[DllImport("dll文件名.dll")]

public static extern 类型 方法名(参数);

即可调用此方法

参考技术A 如果这是个用c#编写的dll文件，那么
using DLL文件的命名空间，然后就可以调用命名空间中的类。

如果是不是用c#编写的dll文件，那么就把dll放到合适位置（winform程序目录下，web程序bin文件夹下，system32文件夹下，）然后
using System.Runtime.InteropServices;
[DllImport("dll文件名.dll")]
public static extern 类型 方法名(参数);
即可调用此方法本回答被提问者和网友采纳 参考技术B 先using这个程序集，然后就可以使用这个程序集里面的对象了