C# Method to Convert ASCII to EBCDIC vice versa

This example show convertion between ASCII character to EBCDIC character and EBCDIC to ASCII.

ASCII To EBCDIC

public string ConvertASCIItoEBCDIC(string strASCIIString)
{
     int[] a2e = new int[256]
     {
        0, 1, 2, 3, 55, 45, 46, 47, 22, 5, 37, 11, 12, 13, 14, 15,
        16, 17, 18, 19, 60, 61, 50, 38, 24, 25, 63, 39, 28, 29, 30, 31,
        64, 79,127,123, 91,108, 80,125, 77, 93, 92, 78,107, 96, 75, 97,
        240,241,242,243,244,245,246,247,248,249,122, 94, 76,126,110,111,
        124,193,194,195,196,197,198,199,200,201,209,210,211,212,213,214,
        215,216,217,226,227,228,229,230,231,232,233, 74,224, 90, 95,109,
        121,129,130,131,132,133,134,135,136,137,145,146,147,148,149,150,
        151,152,153,162,163,164,165,166,167,168,169,192,106,208,161, 7,
        32, 33, 34, 35, 36, 21, 6, 23, 40, 41, 42, 43, 44, 9, 10, 27,
        48, 49, 26, 51, 52, 53, 54, 8, 56, 57, 58, 59, 4, 20, 62,225,
        65, 66, 67, 68, 69, 70, 71, 72, 73, 81, 82, 83, 84, 85, 86, 87,
        88, 89, 98, 99,100,101,102,103,104,105,112,113,114,115,116,117,
        118,119,120,128,138,139,140,141,142,143,144,154,155,156,157,158,
        159,160,170,171,172,173,174,175,176,177,178,179,180,181,182,183,
        184,185,186,187,188,189,190,191,202,203,204,205,206,207,218,219,
        220,221,222,223,234,235,236,237,238,239,250,251,252,253,254,255
      };
      char chrItem = Convert.ToChar("0");
      StringBuilder sb = new StringBuilder();
      for (int i = 0; i < strASCIIString.Length; i++)
      {
          try
          {
             chrItem = Convert.ToChar(strASCIIString.Substring(i, 1));
             sb.Append(Convert.ToChar(a2e[(int)chrItem]));
          }
          catch (Exception ex)
          {
               Console.WriteLine(ex.Message);
               return string.Empty;
          }
       }
       string result = sb.ToString();
       sb = null;
       return result;
}

EBCDIC To ASCI

        public string ConvertEBCDICtoASCII(string strEBCDICString)
        {
            int[] e2a = new int[256]
            {
                0, 1, 2, 3,156, 9,134,127,151,141,142, 11, 12, 13, 14, 15,
                16, 17, 18, 19,157,133, 8,135, 24, 25,146,143, 28, 29, 30, 31,
                128,129,130,131,132, 10, 23, 27,136,137,138,139,140, 5, 6, 7,
                144,145, 22,147,148,149,150, 4,152,153,154,155, 20, 21,158, 26,
                32,160,161,162,163,164,165,166,167,168, 91, 46, 60, 40, 43, 33,
                38,169,170,171,172,173,174,175,176,177, 93, 36, 42, 41, 59, 94,
                45, 47,178,179,180,181,182,183,184,185,124, 44, 37, 95, 62, 63,
                186,187,188,189,190,191,192,193,194, 96, 58, 35, 64, 39, 61, 34,
                195, 97, 98, 99,100,101,102,103,104,105,196,197,198,199,200,201,
                202,106,107,108,109,110,111,112,113,114,203,204,205,206,207,208,
                209,126,115,116,117,118,119,120,121,122,210,211,212,213,214,215,
                216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,
                123, 65, 66, 67, 68, 69, 70, 71, 72, 73,232,233,234,235,236,237,
                125, 74, 75, 76, 77, 78, 79, 80, 81, 82,238,239,240,241,242,243,
                92,159, 83, 84, 85, 86, 87, 88, 89, 90,244,245,246,247,248,249,
                48, 49, 50, 51, 52, 53, 54, 55, 56, 57,250,251,252,253,254,255
            };

            char chrItem = Convert.ToChar("0");
            StringBuilder sb = new StringBuilder();
            for (int i = 0; i < strEBCDICString.Length; i++)
            {
                try
                {
                    chrItem = Convert.ToChar(strEBCDICString.Substring(i, 1));
                    sb.Append(Convert.ToChar(e2a[(int)chrItem]));
                }
                catch (Exception ex)
                {
                    Console.WriteLine(ex.Message);
                    return string.Empty;
                }
            }

            string result = sb.ToString();
            sb = null;
            return result;
        }

Output

Input(ASCII) : developersnote.com
Output (EBCDIC) : „…¥…“–—…™¢•–£…Kƒ–”

By Mohd Zulkamal
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