BarcodeLib/Symbologies/Code39.cs

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

namespace BarcodeLib
{
    class Code39 : BarcodeCommon, IBarcode
    {
        private System.Collections.Hashtable C39_Code = new System.Collections.Hashtable(); //is initialized by init_Code39()
        private System.Collections.Hashtable ExtC39_Translation = new System.Collections.Hashtable();
        private bool _AllowExtended = false;

        /// <summary>
        /// Encodes with Code39.
        /// </summary>
        /// <param name="input">Data to encode.</param>
        public Code39(string input)
        {
            Raw_Data = input;
        }//Code39

        /// <summary>
        /// Encodes with Code39.
        /// </summary>
        /// <param name="input">Data to encode.</param>
        /// <param name="AllowExtended">Allow Extended Code 39 (Full Ascii mode).</param>
        public Code39(string input, bool AllowExtended)
        {
            Raw_Data = input;
            _AllowExtended = AllowExtended;
        }

        /// <summary>
        /// Encode the raw data using the Code 39 algorithm.
        /// </summary>
        private string Encode_Code39()
        {
            this.init_Code39();
            this.init_ExtendedCode39();

            string strFormattedData = "*" + Raw_Data.Replace("*", "") + "*";

            if (_AllowExtended)
                InsertExtendedCharsIfNeeded(ref strFormattedData);

            this.FormattedData = strFormattedData;

            string result = "";
            foreach (char c in this.FormattedData)
            {
                try
                {
                    result += C39_Code[c].ToString();
                    result += "0";//whitespace
                }//try
                catch
                {
                    if (_AllowExtended)
                        throw new Exception("EC39-1: Invalid data.");
                    else