public int Read(int Bytes2Read)
{
if (Bytes2Read == 0)
{
Bytes2Read = this.miBufferSize;
}
if (this.mhRS == -1)
{
throw new ApplicationException("Please initialize and open port before using this method");
}
int num1 = 0;
try
{
if (this.meMode == Rs232.Mode.Overlapped)
{
this.pHandleOverlappedRead(Bytes2Read);
}
else
{
this.mabtRxBuf = new byte[checked (Bytes2Read - 1 + 1)];
int mhRs = this.mhRS;
byte[] mabtRxBuf = this.mabtRxBuf;
int nNumberOfBytesToRead = Bytes2Read;
int num2 = 0;
// ISSUE: explicit reference operation
// ISSUE: variable of a reference type
int lpNumberOfBytesRead = @num2;
Rs232.OVERLAPPED overlapped = (Rs232.OVERLAPPED)((object)null ?? Activator.CreateInstance(typeof(Rs232.OVERLAPPED)));
// ISSUE: explicit reference operation
// ISSUE: variable of a reference type
Rs232.OVERLAPPED lpOverlapped = @overlapped;
int num3 = Rs232.ReadFile(mhRs, mabtRxBuf, nNumberOfBytesToRead, ref lpNumberOfBytesRead, ref lpOverlapped);
if (num3 == 0)
{
throw new ApplicationException("ReadFile error " + num3.ToString());
}
if (num2 < Bytes2Read)
{
throw new Rs232.IOTimeoutException("Timeout error");
}
this.mbWaitOnRead = true;
num1 = num2;
}
}
catch (Exception ex)
{
ProjectData.SetProjectError(ex);
Exception innerException = ex;
throw new ApplicationException("Read Error: " + innerException.Message, innerException);
}
return(num1);
}
public void Write(byte[] Buffer)
{
if (this.mhRS == -1)
{
throw new ApplicationException("Please initialize and open port before using this method");
}
try
{
if (this.meMode == Rs232.Mode.Overlapped)
{
if (this.pHandleOverlappedWrite(Buffer))
{
throw new ApplicationException("Error in overllapped write");
}
}
else
{
Rs232.PurgeComm(this.mhRS, 12);
int mhRs = this.mhRS;
byte[] Buffer1 = Buffer;
int length = Buffer.Length;
int num = 0;
// ISSUE: explicit reference operation
// ISSUE: variable of a reference type
int lpNumberOfBytesWritten = @num;
Rs232.OVERLAPPED overlapped = (Rs232.OVERLAPPED)((object)null ?? Activator.CreateInstance(typeof(Rs232.OVERLAPPED)));
// ISSUE: explicit reference operation
// ISSUE: variable of a reference type
Rs232.OVERLAPPED lpOverlapped = @overlapped;
if (Rs232.WriteFile(mhRs, Buffer1, length, ref lpNumberOfBytesWritten, ref lpOverlapped) == 0)
{
throw new ApplicationException("Write Error - Bytes Written " + num.ToString() + " of " + Buffer.Length.ToString());
}
}
}
catch (Exception ex)
{
ProjectData.SetProjectError(ex);
throw;
}
}
private static extern int WriteFile(int hFile, byte[] Buffer, int nNumberOfBytesToWrite, ref int lpNumberOfBytesWritten, ref Rs232.OVERLAPPED lpOverlapped);
private static extern int WaitCommEvent(int hFile, ref Rs232.EventMasks Mask, ref Rs232.OVERLAPPED lpOverlap);
private static extern int ReadFile(int hFile, byte[] Buffer, int nNumberOfBytesToRead, ref int lpNumberOfBytesRead, ref Rs232.OVERLAPPED lpOverlapped);
private static extern int GetOverlappedResult(int hFile, ref Rs232.OVERLAPPED lpOverlapped, ref int lpNumberOfBytesTransferred, int bWait);