System.Xml.Schema.Datatype_union.TryParseValue C# (CSharp) Method

        internal override Exception TryParseValue(object value, XmlNameTable nameTable, IXmlNamespaceResolver nsmgr, out object typedValue)
        {
            Exception exception;
            if (value == null)
            {
                throw new ArgumentNullException(nameof(value));
            }
            typedValue = null;
            string s = value as string;
            if (s != null)
            {
                return TryParseValue(s, nameTable, nsmgr, out typedValue);
            }

            object valueToCheck = null;
            XmlSchemaSimpleType memberType = null;
            for (int i = 0; i < _types.Length; ++i)
            {
                if (_types[i].Datatype.TryParseValue(value, nameTable, nsmgr, out valueToCheck) == null)
                { //no error
                    memberType = _types[i];
                    break;
                }
            }
            if (valueToCheck == null)
            {
                exception = new XmlSchemaException(SR.Sch_UnionFailedEx, value.ToString());
                goto Error;
            }
            try
            {
                if (this.HasLexicalFacets)
                {
                    string s1 = (string)this.ValueConverter.ChangeType(valueToCheck, typeof(System.String), nsmgr); //Using value here to avoid info loss
                    exception = unionFacetsChecker.CheckLexicalFacets(ref s1, this);
                    if (exception != null) goto Error;
                }
                typedValue = new XsdSimpleValue(memberType, valueToCheck);
                if (this.HasValueFacets)
                {
                    exception = unionFacetsChecker.CheckValueFacets(typedValue, this);
                    if (exception != null) goto Error;
                }
                return null;
            }
            catch (FormatException e)
            { //Catching for exceptions thrown by ValueConverter
                exception = e;
            }
            catch (InvalidCastException e)
            { //Catching for exceptions thrown by ValueConverter
                exception = e;
            }
            catch (OverflowException e)
            { //Catching for exceptions thrown by ValueConverter
                exception = e;
            }
            catch (ArgumentException e)
            { //Catching for exceptions thrown by ValueConverter
                exception = e;
            }

        Error:
            return exception;
        }
    }