Convert Hex To Ascii

Question

MessageId0=000;

MessageId1=099;

 

hexString = "008" + MessageId0 + MessageId1 + "000003000000000" + MessageId0 + MessageId1 + "001";

 

private string HexString2Ascii(string hexString)

{

   StringBuilder sb = new StringBuilder();

   for (int i = 0; i <= hexString.Length - 3; i += 3)

   {

      sb.Append(Convert.ToString(Convert.ToChar(Int32.Parse(hexString.Substring(i, 3),       System.Globalization.NumberStyles.Number))));

   }

   Label1.Text = sb.ToString();

   return sb.ToString();

}

 

this code is workin fine till MessageId1=127; after 127 (like 128,141;) is just converting all the number to  63 (b).

 

i want conversion should be proper till 256 

 

please help  !

thanks in advance !!