For more information, see the ICollection View Live Shaping interface.
Implementing the weak event pattern is now easier because subscribers to events can participate in it without implementing an extra interface.
The source object typically needs the value of the slider only when the slider's Value stops changing.To prevent updating the source too often, use Delay to specify that the source should not be updated until a certain amount of time elapses after the thumb stops moving.WPF supports data binding to objects that implement ICustom Type Provider, also known as custom types. In certain cases, you might get the Binding Expression of a Binding and need information about the source and target objects of the binding.A collection of data can be grouped, sorted, or filtered.WPF 4.5 enables the data to be rearranged when the data is modified.
Search for validating datagrid:
For more information about grouping data, see How to: Sort and Group Data Using a View in XAML.