c# - 如何序列化到日期时间

Question

正在努力获取任何时区的日期时间。 我正在使用 DateTimeOffset、一个字符串和一个 XmlElement 属性。当我这样做时，出现以下错误:

[InvalidOperationException: 'dateTime' is an invalid value for the XmlElementAttribute.DataType property. dateTime cannot be converted to System.String.]
System.Xml.Serialization.XmlReflectionImporter.ImportTypeMapping(TypeModel model, String ns, ImportContext context, String dataType, XmlAttributes a, Boolean repeats, Boolean openModel, RecursionLimiter limiter) +450

[InvalidOperationException: There was an error reflecting type 'System.String'.]
System.Xml.Serialization.XmlReflectionImporter.ImportTypeMapping(TypeModel model, String ns, ImportContext context, String dataType, XmlAttributes a, Boolean repeats, Boolean openModel, RecursionLimiter limiter) +1621
System.Xml.Serialization.XmlReflectionImporter.ImportAccessorMapping(MemberMapping accessor, FieldModel model, XmlAttributes a, String ns, Type choiceIdentifierType, Boolean rpc, Boolean openModel, RecursionLimiter limiter) +8750
System.Xml.Serialization.XmlReflectionImporter.ImportFieldMapping(StructModel parent, FieldModel model, XmlAttributes a, String ns, RecursionLimiter limiter) +139
System.Xml.Serialization.XmlReflectionImporter.InitializeStructMembers(StructMapping mapping, StructModel model, Boolean openModel, String typeName, RecursionLimiter limiter) +1273

[InvalidOperationException: There was an error reflecting property 'creationTimeX'.] ...

代码:

 [System.Xml.Serialization.XmlElement(ElementName = "creationTime",
      DataType="dateTime")]
 public string creationTimeX
    {
        get
        {
            return this.creationTimeField.ToString("yyyy-MM-ddTHH:mm:sszzz");
        }
        set
        {
            DateTimeOffset.TryParse(value, out this.creationTimeField);
        }
    }

[System.Xml.Serialization.XmlIgnoreAttribute()]
public System.DateTimeOffset creationTime
{
    get {
        return this.creationTimeField;
    }
    set {
        this.creationTimeField = value;
    }
}

Answer 1

这对我有用

private const string DateTimeOffsetFormatString = "yyyy-MM-ddTHH:mm:sszzz";
private DateTimeOffset eventTimeField;

[System.Xml.Serialization.XmlElementAttribute(Form = System.Xml.Schema.XmlSchemaForm.Unqualified, Order = 0)]
public string eventTime
{
    get { return eventTimeField.ToString(DateTimeOffsetFormatString); }
    set { eventTimeField = DateTimeOffset.Parse(value); }
}