System.Xml.Schema.XdrValidator.CheckDefaultValue C# (CSharp) Method

        public static void CheckDefaultValue(
            string              value,
            SchemaAttDef        attdef,
            SchemaInfo          sinfo,
            XmlNamespaceManager     nsManager,
            XmlNameTable        NameTable,
            object              sender,
            ValidationEventHandler  eventhandler,
            string              baseUri,
            int                 lineNo,
            int                 linePos
        ) {
            try {

                XmlSchemaDatatype dtype = attdef.Datatype;
                if (dtype == null) {
                    return; // no reason to check
                }
                
                if (dtype.TokenizedType != XmlTokenizedType.CDATA) {
                    value = value.Trim();
                }
                if (value.Length == 0) {
                    return; // don't need to check
                }
                object typedValue = dtype.ParseValue(value, NameTable, nsManager);

                // Check special types
                XmlTokenizedType ttype = dtype.TokenizedType;
                if (ttype == XmlTokenizedType.ENTITY) {
                    if (dtype.Variety == XmlSchemaDatatypeVariety.List) {
                        string[] ss = (string[])typedValue;
                        foreach(string s in ss) {
                            ProcessEntity(sinfo, s, sender, eventhandler, baseUri, lineNo, linePos);
                        }
                    }
                    else {
                        ProcessEntity(sinfo, (string)typedValue, sender, eventhandler, baseUri, lineNo, linePos);
                    }
                }
                else if (ttype == XmlTokenizedType.ENUMERATION) {
                    if (!attdef.CheckEnumeration(typedValue)) {
                        XmlSchemaException e = new XmlSchemaException(Res.Sch_EnumerationValue, typedValue.ToString(), baseUri, lineNo, linePos);
                        if (eventhandler != null) {
                            eventhandler(sender, new ValidationEventArgs(e));
                        }
                        else {
                            throw e;
                        }
                    }
                }
                attdef.DefaultValueTyped = typedValue;
            }
#if DEBUG
            catch (XmlSchemaException ex) {
                Debug.WriteLineIf(DiagnosticsSwitches.XmlSchema.TraceError, ex.Message);
#else
            catch  {
#endif
                XmlSchemaException e = new XmlSchemaException(Res.Sch_AttributeDefaultDataType, attdef.Name.ToString(), baseUri, lineNo, linePos);
                if (eventhandler != null) {
                    eventhandler(sender, new ValidationEventArgs(e));
                }
                else {
                    throw e;
                }
            }
        }