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POICustomTypeDescriptor databinding to textbox
 

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  1. POICustomTypeDescriptor databinding to textbox
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    <p>I have a model that implements ICustomTypeDescriptor. This is because I want to be able to add custom properties ... that are not in the object and bind them to a textbox. The strange part is that the binding works great to a PropertyGrid but not to a textbox. </p> <p>This code works: </p> <pre><code>DynamicClass&lt;ExtensionModel&gt; binder = new DynamicClass&lt;ExtensionModel&gt;(ext); propertyGrid1.SelectedObject = binder; </code></pre> <p>but not his one: </p> <pre><code>var binder = new DynamicClass&lt;ExtensionModel&gt;(ext); _versionLabel.DataBindings.Add("Text", binder, "SelectedVersion", false, DataSourceUpdateMode.OnPropertyChanged); </code></pre> <p>In this case I get Object does not match target type. exception. If I put ext instead of binder in the binding it works fine.</p> <p>Is there a problem with the textbox binding capabilities?</p> <p>My code for DynamicClass is: </p> <pre><code>public class DynamicClass&lt;T&gt; : ICustomTypeDescriptor { private readonly T _object; public DynamicClass(T trackedObject) { _object = trackedObject; } // Collection to code add dynamic properties public KeyedCollection&lt;string, DynamicProperty&gt; Properties { get; private set; } // ICustomTypeDescriptor implementation AttributeCollection ICustomTypeDescriptor.GetAttributes() { return TypeDescriptor.GetAttributes(_object, true); } string ICustomTypeDescriptor.GetClassName() { return TypeDescriptor.GetClassName(_object, true); } string ICustomTypeDescriptor.GetComponentName() { return TypeDescriptor.GetComponentName(_object, true); } TypeConverter ICustomTypeDescriptor.GetConverter() { return TypeDescriptor.GetConverter(_object, true); } EventDescriptor ICustomTypeDescriptor.GetDefaultEvent() { return TypeDescriptor.GetDefaultEvent(_object, true); } PropertyDescriptor ICustomTypeDescriptor.GetDefaultProperty() { return TypeDescriptor.GetDefaultProperty(_object, true); } object ICustomTypeDescriptor.GetEditor(Type editorBaseType) { return TypeDescriptor.GetEditor(_object, editorBaseType, true); } EventDescriptorCollection ICustomTypeDescriptor.GetEvents() { return TypeDescriptor.GetEvents(_object, true); } EventDescriptorCollection ICustomTypeDescriptor.GetEvents(Attribute[] attributes) { return TypeDescriptor.GetEvents(_object, attributes, true); } PropertyDescriptorCollection ICustomTypeDescriptor.GetProperties() { return TypeDescriptor.GetProperties(_object, true); } PropertyDescriptorCollection ICustomTypeDescriptor.GetProperties(Attribute[] attributes) { return TypeDescriptor.GetProperties(_object, attributes, true); } object ICustomTypeDescriptor.GetPropertyOwner(PropertyDescriptor pd) { return _object; } } </code></pre>
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    1. USRadu D
    1. USRadu D
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    1. COCan we see any of your custom descriptors? (in particular for SelectedVersion) In general this should work fine (I've done plenty of crazy custom descriptor stuff), so my gut say: bug in the code you aren't showing
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      1. POICustomTypeDescriptor databinding to textbox
      1. USMarc Gravell
    2. COalso, you mention "textbox", but you seem to be binding to a ComboBox...?
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      1. POICustomTypeDescriptor databinding to textbox
      1. USMarc Gravell
    3. COI will add the code now. Sorry wrong copy/paste with the binding :(
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      1. POICustomTypeDescriptor databinding to textbox
      1. USRadu D
 

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