Line Printer Class in C#

MyPrinter.Print(String.Format("{0:000} {1,-20:} {2:###0.00} {3:000} {4:######,00}\r\n",sr,name,price,qty,amount));

public bool Print(string outputstring)
      {
         if(HandlePrinter==IntPtr.Zero) return false;

         Encoding enc852 = System.Text.Encoding.GetEncoding(852) ;
         byte[] bytes852 = enc852.GetBytes(outputstring);
         int nLength = Convert.ToInt32(bytes852.Length);
         // Allocate unmanaged memory for those bytes.
         IntPtr pBytes = Marshal.AllocCoTaskMem(nLength);
         // Moral copy direct without any changes to string or bytes
         Marshal.Copy(bytes852, 0, pBytes, nLength);
         // Send the unmanaged bytes to the printer
         int dwWritten = 0;
         bool bSuccess = WritePrinter(HandlePrinter, pBytes, nLength, out dwWritten);
         // Free the unmanaged memory that you allocated earlier.
         Marshal.FreeCoTaskMem(pBytes);
         if (!bSuccess) return false;
         else return true;
      }
public bool PrintLine(string outputstring)
       {
           // add string for LFCR or use ESC seq this could be faster for lot of lines
           outputstring += "\r\n";
           return this.Print(outputstring);
       }

sing System;
using System.Collections.Generic;
using System.Text;

namespace lucach.Printing
{
    public  class CEscape
    {
        //konstructor
        public CEscape() { }




        public String OpenCashDrawer2Pin()
        {

            StringBuilder sequence = new StringBuilder();
            sequence.Append((char)27);
            sequence.Append((char)112);
            // 0-pin 2 ; 1- pin 5
            sequence.Append((char)0);
            sequence.Append((char)30);
            sequence.Append((char)30);

            return sequence.ToString();

        }



        public  String OpenCashDrawer5Pin()
        {

            StringBuilder sequence = new StringBuilder();
            sequence.Append((char)27);
            sequence.Append((char)112);
            // 0-pin 2 ; 1- pin 5
            sequence.Append((char)1);
            sequence.Append((char)30);
            sequence.Append((char)30);

            return sequence.ToString();

        }



        public String InitializePrinter()
        {

            StringBuilder sequence = new StringBuilder();
            sequence.Append((char)27);
            sequence.Append((char)64);

            return sequence.ToString();

        }

        public String PrintCenterText()
        {
            //The printer will continue printing at center
            StringBuilder sequence = new StringBuilder();
            sequence.Append((char)27);
            sequence.Append((char)97);
            sequence.Append((char)1);

            return sequence.ToString();
        }


        public String BoldON()
        {
            //The printer will continue printing Bolded characters
            StringBuilder sequence = new StringBuilder();
            sequence.Append((char)27);
            sequence.Append((char)69);
            sequence.Append((char)1);

            return sequence.ToString();
        }


        public String BoldOFF()
        {
            //The printer will stop printing Bold
            StringBuilder sequence = new StringBuilder();
            sequence.Append((char)27);
            sequence.Append((char)69);
            sequence.Append((char)0);

            return sequence.ToString();
        }

        public String PrintLeftText()
        {

            //The printer will continue printing at left
            StringBuilder sequence = new StringBuilder();
            sequence.Append((char)27);
            sequence.Append((char)97);
            sequence.Append((char)0);
            
            return sequence.ToString();

        }

        public String PrintRightText()
        {

            //The printer will continue printing Right
            StringBuilder sequence = new StringBuilder();
            sequence.Append((char)27);
            sequence.Append((char)97);
            sequence.Append((char)2);

            return sequence.ToString();

        }


        public String SelectCP437()
        {
            StringBuilder sequence = new StringBuilder();
            
            sequence.Append((char)27);
            sequence.Append((char)82);
            sequence.Append((char)15);

            return sequence.ToString();
        }

        public String SelectTextMode()
        {
            StringBuilder sequence = new StringBuilder();
            // ESC S
            sequence.Append((char)27);
            sequence.Append((char)83);
            
            return sequence.ToString();
        }


        public String SelectCP852()
        {
            StringBuilder sequence = new StringBuilder();
            sequence.Append((char)27);
            sequence.Append((char)116);
            sequence.Append((char)18);

            return sequence.ToString();
        }

        public String CutPaper()
        {
            StringBuilder sequence = new StringBuilder();
            sequence.Append((char)27);
            sequence.Append((char)105);
            sequence.Append((char)0);
            sequence.Append((char)25);

            return sequence.ToString();

        }



        public String FeedPaper(int pNumLines)
        {

            StringBuilder sequence = new StringBuilder();
            sequence.Append((char)27);
            sequence.Append((char)100);
            sequence.Append((char)pNumLines);

            return sequence.ToString();

        }

        public String PrintAndFeedPaper(int pNumLines)
        {
            // Print and feed pNumLines
            StringBuilder sequence = new StringBuilder();
            sequence.Append((char)27);
            sequence.Append((char)100);
            sequence.Append((char)pNumLines);

            return sequence.ToString();
        }


        public String SelectFontB()
        {
            //normalni font 
            StringBuilder sequence = new StringBuilder();
            sequence.Append((char)27);
            sequence.Append((char)77);
            sequence.Append((char)1);

            return sequence.ToString();
        }

        public String SelectFontA()
        {
            //normalni font
            StringBuilder sequence = new StringBuilder();
            sequence.Append((char)27);
            sequence.Append((char)77);
            sequence.Append((char)0);

            return sequence.ToString();
        }


        public String SetDoubleHeightFontA()
        {
            StringBuilder sequence = new StringBuilder();
            // Nesto drugacije sekvence od setprint mode
            sequence.Append((char)27);
            sequence.Append((char)33);
            sequence.Append((char)16);

            return sequence.ToString();
        }


        public String SetDoubleHeightFontB()
        {
            StringBuilder sequence = new StringBuilder();
            // Nesto drugacije sekvence od setprint mode
            sequence.Append((char)27);
            sequence.Append((char)33);
            sequence.Append((char)17);

            return sequence.ToString();
        }


        public String SetDoubleWidthFontA()
        {
            StringBuilder sequence = new StringBuilder();
            // Nesto drugacije sekvence od setprint mode
            sequence.Append((char)27);
            sequence.Append((char)33);
            sequence.Append((char)32);

            return sequence.ToString();
        }


        public String Set2H2WFontA()
        {
            //double h double w
            StringBuilder sequence = new StringBuilder();
            // Nesto drugacije sekvence od setprint mode
            sequence.Append((char)27);
            sequence.Append((char)33);
            sequence.Append((char)56);

            return sequence.ToString();
        }


        public String Set2H2WFontB()
        {
            StringBuilder sequence = new StringBuilder();
            // something diff. from setprint mode
            sequence.Append((char)27);
            sequence.Append((char)33);
            sequence.Append((char)39);

            return sequence.ToString();
        }

        public String SetNormalFont()
        {
            StringBuilder sequence = new StringBuilder();
            
            sequence.Append((char)29);
            sequence.Append((char)33);
            sequence.Append((char)0);

            return sequence.ToString();
        }

        public String SetLeftMarginTo0()
        {
            StringBuilder sequence = new StringBuilder();

            sequence.Append((char)29);
            sequence.Append((char)76);
            sequence.Append((char)0);

            return sequence.ToString();
        }

        public String SetEXYuFont()
        {
            // this set international character table
            // select an international character 15 for EX-Yu foreign Yugoslavia
            StringBuilder sequence = new StringBuilder();
            sequence.Append((char)27);
            sequence.Append((char)82);
            sequence.Append((char)15);

            return sequence.ToString();
        }


        public String TurnOnReversePrinting()
        {
            StringBuilder sequence = new StringBuilder();
            
            sequence.Append((char)29);
            sequence.Append((char)66);
            sequence.Append((char)1);

            return sequence.ToString();
        }


        public String TurnOffReversePrinting()
        {
            StringBuilder sequence = new StringBuilder();
           
            sequence.Append((char)29);
            sequence.Append((char)66);
            sequence.Append((char)0);

            return sequence.ToString();
        }


        public String UnderlineOFF()
        {
            StringBuilder sequence = new StringBuilder();

            sequence.Append((char)27);
            sequence.Append((char)45);
            sequence.Append((char)0);

            return sequence.ToString();
        }


        public String Underline1Dot()
        {
            StringBuilder sequence = new StringBuilder();

            sequence.Append((char)27);
            sequence.Append((char)45);
            sequence.Append((char)1);

            return sequence.ToString();
        }


        public String Underline2Dot()
        {
            StringBuilder sequence = new StringBuilder();

            sequence.Append((char)27);
            sequence.Append((char)45);
            sequence.Append((char)2);

            return sequence.ToString();
        }

        public String SetLeftMarginInTextMode()
        {
            StringBuilder sequence = new StringBuilder();
            
            sequence.Append((char)29);
            sequence.Append((char)76);
            sequence.Append((char)0);
            sequence.Append((char)0);

            return sequence.ToString();
        }

        public String CR()
        {
            StringBuilder sequence = new StringBuilder();
            
            sequence.Append((char)13);
            
            return sequence.ToString();
        }

        public String FF()
        {
            // Print and return to text mode in page mode
            StringBuilder sequence = new StringBuilder();

            sequence.Append((char)12);

            return sequence.ToString();
        }

        public String LF()
        {
            // Print and line feed
            StringBuilder sequence = new StringBuilder();

            sequence.Append((char)10);

            return sequence.ToString();
        }

        public String LFCR()
        {
            // Print and line feed and new line
            StringBuilder sequence = new StringBuilder();

            sequence.Append((char)10);
            sequence.Append((char)13);

            return sequence.ToString();
        }
   

    }
}

LPrinter lp = new LPrinter();
CEscape esq = new CEscape();
// use this to initialize printer and set code page for your country and international table
// ask your dealer for ESC POS sequences table - documentation
lp.Print(esq.InitializePrinter()+ esq.SelectCP852()+ esq.SetEXYuFont()+ esq.SetNormalFont());
lp.Print(esq.SetDoubleHeightFontA() + esq.BoldON() + esq.PrintCenterText() + "Select font A and print bolded double height + "\r\n");
lp.PrintLine(esq.PrintCenterText() + esq.SetNormalFont() + "This is printed centered on paper");
lp.Print(esq.OpenCashDrawer2Pin());
lp.Print(esq.OpenCashDrawer5Pin()); 
lp.Print(esq.PrintAndFeedPaper(2));
lp.Print(esq.CutPaper());