/// <summary>
/// Prints the specified string value to the printer.
/// </summary>
/// <param name="value">The value to print.</param>
public override void Print(string value)
{
bool isOnline = false;
IPort port = null;
try
{
port = Factory.I.GetPort("USBPRN:" + PrinterName, "", Timeout);
isOnline = port.GetOnlineStatus();
if (!isOnline)
{
throw new PortException("The printer is offline.");
}
byte[] dataByteArray = Encoding.GetEncoding("Windows-1252").GetBytes(value);
uint amountWritten = 0;
uint amountWrittenKeep = 0;
while (dataByteArray.Length > amountWritten)
{
amountWrittenKeep = amountWritten;
amountWritten += port.WritePort(dataByteArray, amountWritten, (uint)dataByteArray.Length - amountWritten);
if (amountWrittenKeep == amountWritten)
{
throw new PortException("Can't send data.");
}
}
if (amountWritten != dataByteArray.Length)
{
throw new PortException("All data was not sent.");
}
}
finally
{
if (port != null)
{
Factory.I.ReleasePort(port);
}
}
}
public void PrintFromStarIO(string prnData)
{
//Set the status to offline because this is a new attempt to print
onlineStatus = false;
//TRY -> Use the textboxes to check if the port info given will connect to the printer.
try
{
//Very important to only try opening the port in a Try, Catch incase the port is not working
this.sPort = Factory.I.GetPort(PrinterPortname, Printersetting, 10000);
//GetOnlineStatus() will return a boolean to let us know if the printer was reachable.
this.onlineStatus = sPort.GetOnlineStatus();
}
//CATCH -> If the port information is bad, catch the failure.
catch (PortException err)
{
//label1.Text = "Error Message: " + err.Message + "\n\n\nStacktrace: " + err.StackTrace;
onlineStatus = false;
if (this.sPort != null)
{
Factory.I.ReleasePort(this.sPort);
//label1.Text = "Port Error";
tbStatus.BackColor = Color.Red;
return; //exit this entire function
}
}
//If it is offline, dont setup receipt or try to write to the port.
if (onlineStatus == false)
{
//label1.Text = "offline";
tbStatus.BackColor = Color.Red;
Factory.I.ReleasePort(sPort);
}
//Else statement means it is ONLINE, lets start the printjob
else
{
//label1.Text = "online";
tbStatus.BackColor = Color.Green;
Encoding targetCodePage; // (1)
byte[] encodedBytes; // (2)
int codePage = 865; // (4)
targetCodePage = Encoding.GetEncoding(codePage); // (5)
string cmd = "\x1b\x1d\x74\x09"; // (7)
//encodedBytes = targetCodePage.GetBytes(cmd + this.txtCodePage.Text.ToString() + "\x0a"); // (6)
byte[] dataByteArray = targetCodePage.GetBytes(cmd + prnData + "\x0a");
//Write bytes to printer
uint amountWritten = 0;
uint amountWrittenKeep;
while (dataByteArray.Length > amountWritten)
{
//This while loop is very important because in here is where the bytes are being sent out through StarIO to the printer
amountWrittenKeep = amountWritten;
try
{
amountWritten += sPort.WritePort(dataByteArray, amountWritten, (uint)dataByteArray.Length - amountWritten);
}
catch (PortException)
{
// error happen while sending data
//this.lblPrinterStatus.Text = "Port Error";
//this.lblPrinterStatus.ForeColor = Color.Red;
Factory.I.ReleasePort(sPort);
return;
}
if (amountWrittenKeep == amountWritten) // no data is sent
{
Factory.I.ReleasePort(sPort);
//lblPrinterStatus.Text = "Can't send data";
//this.lblPrinterStatus.ForeColor = Color.Red;
return; //exit this entire function
}
}
//Release the port
//THIS IS VERY IMPORTANT, IF YOU OPEN THE PORT AND DO NOT CLOSE IT, YOU WILL HAVE PROBLEMS
Factory.I.ReleasePort(sPort);
//////////////////////////
//Send the data to the log, you can take this out of the code in your application
//appendLog(dataByteArray);
}
}
