先上代码，很简单，仅涉及一些字符转换，e2aTable存放的是对应字节的对照表，借用了网上找到的，核对了下IBM官方提供一个转码表，基本一致：

        /// <summary>         /// Convert EBCDIC bytes to ASCII UTF-8 String         /// Convert Table "https://www.ibm.com/support/knowledgecenter/en/SSZJPZ_11.3.0/com.ibm.swg.im.iis.ds.parjob.adref.doc/topics/r_deeadvrf_EBCDIC_to_ASCII.html"         /// </summary>         /// <param name="data">bytes array</param>         /// <param name="offset">offset</param>         /// <param name="length">length</param>         /// <returns></returns>         public static string EbcdicToAscii(byte[] data, int offset, int length)         {             int[] e2aTable = 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              };             var stringBuilder = new StringBuilder();             try             {                 for (int i = offset; i < data.Length && i - offset < length; i++)                 {                     //0x00 Means blank, packet do have lots blank,ignore it                     if (data[i] == 0x00)                         continue;                     stringBuilder.Append(Convert.ToChar(e2aTable[data[i]]));                 }                 return stringBuilder.ToString();             }             catch (Exception ex)             {                 log.Error(ex.ToString());                 return null;             }             finally             {                 stringBuilder = null;             }         }

很简单的方法，无依赖。。。特意分享一下