如何在C#中忽略XMLSerilization时的空值？

public class MyClass
{
    [XmlIgnore]
    public string MyProperty { get; set; }
}

XmlSerializer serializer = new XmlSerializer(typeof(MyClass));
XmlSerializerNamespaces namespaces = new XmlSerializerNamespaces();
namespaces.Add(string.Empty, string.Empty);

MyClass obj = new MyClass();
// 设置MyProperty的值为null或空字符串
obj.MyProperty = null;

using (StringWriter writer = new StringWriter())
{
    serializer.Serialize(writer, obj, namespaces);
    string xml = writer.ToString();
    Console.WriteLine(xml);
}