bool isPrinted = BatchPrint.PrintBinaryFile("file path", "Printer IP Address", "Queue Name", "User");
public class BatchPrint
{
private const int cPort = 515;
private const char cLineFeed = '\n';
private const int cDefaultByteSize = 4;
public static string ErrorMessage = string.Empty;
private static string mHost;
private static string mQueue;
private static string mUser;
private static readonly Queue mPrintQueue = new Queue();
private static readonly Dictionary<string, int> mLastPrintId = new Dictionary<string, int>();
public static bool PrintBinaryFile(string filePath, string printerName, string queueName, string userName)
{
try
{
mHost = printerName;
mQueue = queueName;
mUser = userName;
BeginPrint(filePath);
}
catch (Exception ex)
{
ErrorMessage += ex.Message + cLineFeed + ex.StackTrace;
}
return ErrorMessage.Length <= 0;
}
private static void BeginPrint(string filePath)
{
mPrintQueue.Enqueue(filePath);
ThreadStart myThreadDelegate = SendFileToPrinter;
var myThread = new Thread(myThreadDelegate);
myThread.Start();
}
private static void SendFileToPrinter()
{
ErrorMessage = string.Empty;
var fileFromQueue = (string)mPrintQueue.Dequeue();
var tcpClient = new TcpClient();
tcpClient.Connect(mHost, cPort);
const char space = ' ';
using (var networkStream = tcpClient.GetStream())
{
if (!networkStream.CanWrite)
{
ErrorMessage = "NetworkStream.CanWrite failed";
networkStream.Close();
tcpClient.Close();
return;
}
var thisPc = Dns.GetHostName();
var printId = GetPrintId();
var dfA = string.Format("dfA{0}{1}", printId, thisPc);
var cfA = string.Format("cfA{0}{1}", printId, thisPc);
var controlFile = string.Format("H{0}\nP{1}\n{5}{2}\nU{3}\nN{4}\n", thisPc, mUser, dfA, dfA, Path.GetFileName(fileFromQueue), true);
const int bufferSize = (cDefaultByteSize * 1024);
var buffer = new byte[bufferSize];
var acknowledgement = new byte[cDefaultByteSize];
var position = 0;
buffer[position++] = 2;
ProcessBuffer(mQueue, ref buffer, ref position, (byte)cLineFeed);
if (!IsAcknowledgementValid(buffer, position, acknowledgement, networkStream, tcpClient, "No response from printer"))
return;
position = 0;
buffer[position++] = 2;
var cFileLength = controlFile.Length.ToString();
ProcessBuffer(cFileLength, ref buffer, ref position, (byte)space);
ProcessBuffer(cfA, ref buffer, ref position, (byte)cLineFeed);
if (!IsAcknowledgementValid(buffer, position, acknowledgement, networkStream, tcpClient, "Error on control file len"))
return;
position = 0;
ProcessBuffer(controlFile, ref buffer, ref position, 0);
if (!IsAcknowledgementValid(buffer, position, acknowledgement, networkStream, tcpClient, "Error on control file"))
return;
position = 0;
buffer[position++] = 3;
var dataFileInfo = new FileInfo(fileFromQueue);
cFileLength = dataFileInfo.Length.ToString();
ProcessBuffer(cFileLength, ref buffer, ref position, (byte)space);
ProcessBuffer(dfA, ref buffer, ref position, (byte)cLineFeed);
if (!IsAcknowledgementValid(buffer, position, acknowledgement, networkStream, tcpClient, "Error on dfA"))
return;
long totalbytes = 0;
using (var fileStream = new FileStream(fileFromQueue, FileMode.Open))
{
int bytesRead;
while ((bytesRead = fileStream.Read(buffer, 0, bufferSize)) > 0)
{
totalbytes += bytesRead;
networkStream.Write(buffer, 0, bytesRead);
networkStream.Flush();
}
fileStream.Close();
}
if (dataFileInfo.Length != totalbytes)
ErrorMessage = fileFromQueue + "File length error";
position = 0;
buffer[position++] = 0;
if (!IsAcknowledgementValid(buffer, position, acknowledgement, networkStream, tcpClient, "Error on file"))
return;
networkStream.Close();
tcpClient.Close();
}
}
private static int GetPrintId()
{
var count = 0;
lock (mLastPrintId)
{
if (mLastPrintId.ContainsKey(mUser))
count = mLastPrintId[mUser];
count++;
count %= 1000;
if (mLastPrintId.ContainsKey(mUser))
mLastPrintId[mUser] = count;
else
mLastPrintId.Add(mUser, count);
}
return count;
}
private static void ProcessBuffer(string item, ref byte[] buffer, ref int position, byte nextPosition)
{
foreach (var t in item)
{
buffer[position++] = (byte)t;
}
buffer[position++] = nextPosition;
}
private static bool IsAcknowledgementValid(byte[] buffer, int position, byte[] acknowledgement, NetworkStream networkStream, TcpClient tcpClient, string errorMsg)
{
networkStream.Write(buffer, 0, position);
networkStream.Flush();
networkStream.Read(acknowledgement, 0, cDefaultByteSize);
if (acknowledgement[0] == 0)
return true;
ErrorMessage = errorMsg;
networkStream.Close();
tcpClient.Close();
return false;
}
}
