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copied!<p>Wow thanks this question/answer really helped me out. I heart Stackoverflow.</p> <p>I made what you are doing above a little more generic. All we're really looking for is to have Nullable with slightly different serialization behavior. I used Reflector to build my own Nullable, and added a few things here and there to make the XML serialization work the way we want. Seems to work pretty well:</p> <pre><code>public class Nullable<T> { public Nullable(T value) { _value = value; _hasValue = true; } public Nullable() { _hasValue = false; } [XmlText] public T Value { get { if (!HasValue) throw new InvalidOperationException(); return _value; } set { _value = value; _hasValue = true; } } [XmlIgnore] public bool HasValue { get { return _hasValue; } } public T GetValueOrDefault() { return _value; } public T GetValueOrDefault(T i_defaultValue) { return HasValue ? _value : i_defaultValue; } public static explicit operator T(Nullable<T> i_value) { return i_value.Value; } public static implicit operator Nullable<T>(T i_value) { return new Nullable<T>(i_value); } public override bool Equals(object i_other) { if (!HasValue) return (i_other == null); if (i_other == null) return false; return _value.Equals(i_other); } public override int GetHashCode() { if (!HasValue) return 0; return _value.GetHashCode(); } public override string ToString() { if (!HasValue) return ""; return _value.ToString(); } bool _hasValue; T _value; } </code></pre> <p>You lose the ability to have your members as int? and so on (have to use Nullable<int> instead) but other than that all behavior stays the same.</p>

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