IMultiValueConverter is an interface defined in Microsoft .NET WPF and used with MultiBinding data binding. Implementors of the interface have the opportunity to compose or convert items from multiple input collections into a single output collection.
The Microsoft .NET WPF MultiBinding object requires that you provide an IMultiValueConverter implementation when specifying multiple input collections in the MultiBinding object. The multivalue converter's job is to decide how to combine the elements from the multiple input collections. The IMultiValueConverter implementation can also filter elements, returning only a subset of the items found in the input collections.
For more details, see the MSDN documentation for IMultiValueConverter
