invalid XML characters

Question

User-352166405 posted

Hello, with the attached code, I'm getting the following error:

hexadecimal value 0x0b, is an invalid character

I have tried using Regex.Replace on an element like so:

new XElement(Constants.XML_PROJECT_NAME, Regex.Replace(Common.GetReaderValue<string>(reader, Constants.DB_PROJECT_NAME), @"[\u0000-\u0008,\u000B,\u000C,\u000E-\u001F]", "") ?? null),

             

But, that gives me the following error:

Value cannot be null Parameter name: input

What would be the best way to strip out or handle those invalid characters or what am I doing wrong with the replace method?

 public static XDocument CreateCaseXDocument(SqlDataReader reader)
        {
            XDeclaration xDeclaration = new XDeclaration("1.0", "utf-8", "No");

            XElement[] xSubjects = CreateSubjects(reader);
         

            XDocument doc = new XDocument(xDeclaration,
               new XElement(Constants.XML_PROJECT_NAME, Common.GetReaderValue<string>(reader, Constants.DB_PROJECT_NAME) ?? null);
                
            return doc;
        }

Answer 1

User1086429607 posted

Did you try out the method on this thread? http://stackoverflow.com/questions/29301248/hexadecimal-value-0x0b-is-an-invalid-character-issue-in-xml

Answer 2

User-352166405 posted

Yes, but it did not work.

Answer 3

User-352166405 posted

 This is probably the best way to do it:

http://stackoverflow.com/questions/8331119/escape-invalid-xml-characters-in-c-sharp