I was wondering if LingObservableCollaction supports the concept of AllowNew, AllowDelete?
I have a datagrid that I have bound to the following property and have set the bindings for CanUserAddRow and CanUserDeleteRows. The underlying collection was set to AllowNew=False and AllowDelete = False. The datagrid does not work as expected. I originally had the property return the original collection and everything worked as expected.
Public Shared _criteriaValues As BoPropertyInfo(Of CriteriaValueCollection
) = _
Of CriteriaValueCollection)(New BoPropertyInfo(Of CriteriaValueCollection
"CriteriaValues", RelationshipTypes.Child, Nothing
Public ReadOnly Property CriteriaValues() As LinqObservableCollection(Of CriteriaValue
Return (From r In ReadProperty(_criteriaValues) Order By r.Key Select
No, the ObservableCollection type doesn't support those concepts. Those were part of the BindingList<T> (IBindingList) type collections for Windows Forms.
ObservableCollection got rid of almost all those concepts. As a result, an ObservableCollection generally won't work correctly in Windows Forms.
In WPF, conversely, only ObservableCollection works right, and BindingList works partially. Except that some third-party WPF datagrid controls work with BindingList (and don't necessarily work with ObservableCollection).
This makes WPF development a mess, at least if you are using datagrid controls.
If you are doing Windows Forms you should avoid LinqObservableCollection, and use SortedBindingList/FilteredBindingList to do your sorting and filtering. You should also be using the correct collection base types (BusinessBindingListBase instead of BusinessListBase, etc).
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