C sharp - IMPRIMIR codigo de barras en impresoras fiscal c#

public static bool SendStringToPrinter(string szPrinterName, string szString)

{

    IntPtr pBytes;

    Int32 dwCount;

    // How many characters are in the string?

    dwCount = szString.Length;

    // Assume that the printer is expecting ANSI text, and then convert

    // the string to ANSI text.

    pBytes = Marshal.StringToCoTaskMemAnsi(szString);

    // Send the converted ANSI string to the printer.

    SendBytesToPrinter(szPrinterName, pBytes, dwCount);

    Marshal.FreeCoTaskMem(pBytes);

    return true;

}