System.Xml.XsdValidatingReader.ReadContentAsAsync C# (CSharp) Méthode

        public override async Task<object> ReadContentAsAsync(Type returnType, IXmlNamespaceResolver namespaceResolver)
        {
            if (!CanReadContentAs(this.NodeType))
            {
                throw CreateReadContentAsException(nameof(ReadContentAs));
            }
            string originalStringValue;

            var tuple_0 = await InternalReadContentAsObjectTupleAsync(false).ConfigureAwait(false);
            originalStringValue = tuple_0.Item1;

            object typedValue = tuple_0.Item2;

            XmlSchemaType xmlType = NodeType == XmlNodeType.Attribute ? AttributeXmlType : ElementXmlType; //TODO special case for xsd:duration and xsd:dateTime
            try
            {
                if (xmlType != null)
                {
                    // special-case convertions to DateTimeOffset; typedValue is by default a DateTime 
                    // which cannot preserve time zone, so we need to convert from the original string
                    if (returnType == typeof(DateTimeOffset) && xmlType.Datatype is Datatype_dateTimeBase)
                    {
                        typedValue = originalStringValue;
                    }
                    return xmlType.ValueConverter.ChangeType(typedValue, returnType);
                }
                else
                {
                    return XmlUntypedConverter.Untyped.ChangeType(typedValue, returnType, namespaceResolver);
                }
            }
            catch (FormatException e)
            {
                throw new XmlException(SR.Xml_ReadContentAsFormatException, returnType.ToString(), e, this as IXmlLineInfo);
            }
            catch (InvalidCastException e)
            {
                throw new XmlException(SR.Xml_ReadContentAsFormatException, returnType.ToString(), e, this as IXmlLineInfo);
            }
            catch (OverflowException e)
            {
                throw new XmlException(SR.Xml_ReadContentAsFormatException, returnType.ToString(), e, this as IXmlLineInfo);
            }
        }