Hi Telerik,
I'mu using a base class with all proerties which are overridable :
Public
Class
SelectionDetailItemViewModel
Inherits
ViewModelBase
Public
Overridable
Property
Children
As
New
ObservableCollection(Of SelectionDetailItemViewModel)
Public
Overridable
Property
Reference
As
String
Public
Overridable
Property
Name
As
String
'Other properties .....
I have 2 classes A & B which inherit of SelectionDetailItemViewModel. A class has children of type of A & B.
The ItemSource is bound to a ObservableCollection(Of SelectionDetailItemViewModel). For each column, the filter panel has all column values but select a value doesn't filter the RadTreeListView. There the following error :
System.Windows.Data Error: 8 : Cannot save value from target back to source. BindingExpression:Path=IsActive; DataItem='DistinctValueViewModel' (HashCode=63240628); target element is 'CheckBox' (Name=''); target property is 'IsChecked' (type 'Nullable`1') ArgumentException:'System.ArgumentException: La valeur "((Name IsEqualTo er 2d2 MC)) AND ((Name IsEqualTo <Unset>) AND (Name IsEqualTo <Unset>))" n'est pas de type "Telerik.Windows.Data.IFilterDescriptor" et ne peut pas être utilisée dans cette collection générique.
Nom du paramètre : value
à System.ThrowHelper.ThrowWrongValueTypeArgumentException(Object value, Type targetType)
à System.Collections.ObjectModel.Collection`1.System.Collections.IList.Insert(Int32 index, Object value)
à Telerik.Windows.Data.CollectionHelper.Insert(IList target, IEnumerable newItems, Int32 startingIndex, IEqualityComparer itemComparer)
à Telerik.Windows.Data.ObservableCollectionManager.HandleCollectionChanged(IList sender, NotifyCollectionChangedEventArgs args)
à Telerik.Windows.Data.ObservableCollectionManager.Telerik.Windows.Data.IWeakEventListener<System.Collections.Specialized.NotifyCollectionChangedEventArgs>.ReceiveWeakEvent(Object sender, NotifyCollectionChangedEventArgs args)
à Telerik.Windows.Data.WeakEvent.WeakListener`1.Handler(Object sender, TArgs args)
à System.Collections.Specialized.NotifyCollectionChangedEventHandler.Invoke(Object sender, NotifyCollectionChangedEventArgs e)
à System.Collections.ObjectModel.ObservableCollection`1.OnCollectionChanged(NotifyCollectionChangedEventArgs e)
à Telerik.Windows.Data.RadObservableCollection`1.OnCollectionChanged(NotifyCollectionChangedEventArgs e)
à Telerik.Windows.Data.ObservableItemCollection`1.OnCollectionChanged(NotifyCollectionChangedEventArgs e)
à System.Collections.ObjectModel.ObservableCollection`1.InsertItem(Int32 index, T item)
à Telerik.Windows.Data.RadObservableCollection`1.InsertItem(Int32 index, T item)
à Telerik.Windows.Data.FilterDescriptorCollection.InsertItem(Int32 index, IFilterDescriptor item)
à System.Collections.ObjectModel.Collection`1.Add(T item)
à Telerik.Windows.Controls.GridViewColumn.OnColumnFilterDescriptorPropertyChanged(Object sender, PropertyChangedEventArgs e)
à Telerik.Windows.Data.DescriptorBase.OnPropertyChanged(PropertyChangedEventArgs args)
à Telerik.Windows.Data.DescriptorBase.OnPropertyChanged(String propertyName)
à Telerik.Windows.Data.DescriptorBase.ResumeNotifications()
à Telerik.Windows.Controls.GridView.FilteringViewModel.ApplyFilters()
à Telerik.Windows.Controls.GridView.FilteringViewModel.OnDistinctValuesChanged()
à Telerik.Windows.Controls.GridView.FilteringViewModel.OnDistinctValuesItemChanged(Object sender, ItemChangedEventArgs`1 e)
à Telerik.Windows.Data.ObservableItemCollection`1.RaiseGenericItemChanged(ItemChangedEventArgs`1 e)
à Telerik.Windows.Data.ObservableItemCollection`1.OnItemChanged(ItemChangedEventArgs`1 e)
à Telerik.Windows.Data.ObservableItemCollection`1.Telerik.Windows.Data.IWeakEventListener<System.ComponentModel.PropertyChangedEventArgs>.ReceiveWeakEvent(Object sender, PropertyChangedEventArgs args)
à Telerik.Windows.Data.WeakEvent.WeakListener`1.Handler(Object sender, TArgs args)
à System.ComponentModel.PropertyChangedEventHandler.Invoke(Object sender, PropertyChangedEventArgs e)
à Telerik.Windows.Controls.ViewModelBase.OnPropertyChanged(String propertyName)
à Telerik.Windows.Controls.GridView.DistinctValueViewModel.set_IsActive(Boolean value)'
Have you got any idea ?
Thanky you.