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POCreating Value of unknown type at runtime
 

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    <p>I found an nice code example for type validation:</p> <pre><code>public class StringViewModel : ViewModelBase, IComparable { private string _value; private string _originalValue; public StringViewModel(string value) { _value = value; _originalValue = value; } // Der eigentliche Wert. public string Value { get { return _value; } set { if (value != _value) { _value = value; RaisePropertyChanged("Value"); HasChanges = _value != _originalValue &amp;&amp; !(string.IsNullOrEmpty(_value) &amp;&amp; string.IsNullOrEmpty(_originalValue)); } } } public override void AcceptChanges() { _originalValue = _value; HasChanges = false; HasError = false; } public override void UndoChanges() { Value = _originalValue; HasError = false; } // Muss implementiert werden, damit die Sortierung im CollectionView funktioniert. public int CompareTo(object obj) { if (obj == null) return 1; if (object.ReferenceEquals(this, obj)) return 0; StringViewModel other = obj as StringViewModel; return string.Compare(this._value, other._value); } public override string ToString() { return _value; } } </code></pre> <p>Now I want do make it more generic, so I need to create the 2 values below at runtime:</p> <pre><code>private T? _value; private T? _originalValue; </code></pre> <p>because I want to do something like:</p> <pre><code>public class ItemModel : IComparable, INotifyEXTEND { private ??? _value; private ??? _originalValue; public ItemModel(string value) { _value = value; _originalValue = value; } public ??? Value { get { return _value; } set { if (value != _value) { _value = value; RaisePropertyChanged("Value"); HasChanges = _value != _originalValue &amp;&amp; !(string.IsNullOrEmpty(_value) &amp;&amp; string.IsNullOrEmpty(_originalValue)); } } } public override void AcceptChanges() { _originalValue = _value; HasChanges = false; HasError = false; } public override void UndoChanges() { Value = _originalValue; HasError = false; } public int CompareTo(object obj) { if (obj == null) return 1; if (object.ReferenceEquals(this, obj)) return 0; ??? other = obj as ???; return string.Compare(this._value, other._value); } public override string ToString() { return _value; } } </code></pre> <p>So I can use it like this:</p> <pre><code>public class PersonViewModel : ViewModelBase { private Person _person; private ItemModel _lastname; private ItemModel _birthdate; private bool _isNew; // Otherstuff } </code></pre> <p>Any suggestions on how to do this? (Some example code snippets or links would be nice)</p>
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