c# - Decode hex chars in string -

c# - Decode hex chars in string -

from 3rd part string "123123" sick have wrap xml error system.argumentexception: '', hexadecimal value 0x04, invalid character.

can either decode hex value meaningful, or delete it. solution must able handle other hex values well.

i ended creating method

public static string removeinvalidxmlchars(string str) { var sb = new stringbuilder(); var decodedstring = httputility.htmldecode(str); foreach (var c in decodedstring) { if (xmlconvert.isxmlchar(c)) sb.append(c); } homecoming sb.tostring(); }

c# xml character-encoding