Question

As explained on http://www.lhotka.net/weblog/DataRefreshInWPF.aspx

A WPF control sometimes does not rebind to the new datacontext. Specifically when using viewmodels that implement Object.Equals to see if viewmodels are logically equal. The problem here is that the control does not rebind to the new datacontext if it is logically equal to the previous. This causes the controls to become limp, they are not bound to the new viewmodel.

I circumvented this by first setting the DataContext to a new object(). This makes sure the control rebinds to the new datacontext. This does not work however when a viewmodel contains another viewmodel that implements Object.Equals. A view bound to that viewmodel using a DataTemplate will not rebind. How can I work around this?

Obviously WPF databinding should use ReferenceEquals instead of Equals..

UPDATE: I solved it for now by having the sub ViewModels implement IEquatable<T> instead of overriding Object.Equals.

Answer 1

I solved it for now by having the sub ViewModels implement IEquatable instead of overriding Object.Equals.