BarcodeLib/Symbologies/Code93.cs

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

namespace BarcodeLib
{
    class Code93 : BarcodeCommon, IBarcode
    {
        private System.Data.DataTable C93_Code = new System.Data.DataTable("C93_Code");

        /// <summary>
        /// Encodes with Code93.
        /// </summary>
        /// <param name="input">Data to encode.</param>
        public Code93(string input)
        {
            Raw_Data = input;
        }//Code93

        /// <summary>
        /// Encode the raw data using the Code 93 algorithm.
        /// </summary>
        private string Encode_Code93()
        {
            this.init_Code93();

            string FormattedData = Add_CheckDigits(Raw_Data);

            string result = C93_Code.Select("Character = '*'")[0]["Encoding"].ToString();
            foreach (char c in FormattedData)
            {
                try
                {
                    result += C93_Code.Select("Character = '" + c.ToString() + "'")[0]["Encoding"].ToString();
                }//try
                catch
                {
                        throw new Exception("EC93-1: Invalid data.");
                }//catch
            }//foreach

            result += C93_Code.Select("Character = '*'")[0]["Encoding"].ToString();

            //termination bar
            result += "1";

            //clear the hashtable so it no longer takes up memory
            this.C93_Code.Clear();

            return result;
        }//Encode_Code93
        private void init_Code93()
        {
            C93_Code.Rows.Clear();
            C93_Code.Columns.Clear();
            C93_Code.Columns.Add("Value");
            C93_Code.Columns.Add("Character");
            C93_Code.Columns.Add("Encoding");
            C93_Code.Rows.Add(new object[] { "0", "0", "100010100" });
            C93_Code.Rows.Add(new object[] { "1", "1", "101001000" });