Wpf listview selecteditem not updating

bathroom-blowjob

Suppose you have a collection of Person View Model instances, where the class is defined as: Also suppose that you have these resources set up, and they are applied to the List Box that displays the list of Person View Model objects: The List Box is declared as: The UI also has another List Box that is not bound to a grouped collection view, and also, beneath the List Boxs, a Text Block that shows the selected Person View Model’s Bio property. Because it turns out that the initially selected item in a List Box bound to a grouped ICollection View has its Is Selected property set to true, as a local value.

When you run the app, it looks like this: If you select Steve Smith from the left List Box, the UI updates accordingly: However, if you then select Dave Brown again from the right List Box (the one bound to grouped data), watch what happens: Yikes!! According to rules of WPF, a local value takes precedence over the value provided by a binding.

So, the binding established on the List Box Item’s Is Selected property is overwritten by a local value.

Until Microsoft fixes the bug I reported about this we are stuck using a workaround.

Find it in the new version of the list, and re-select it.

bathroom-blowjob

bathroom-blowjob

Save the selected item's key before the list is updated.

And if there are changed items, they load their content from server, while other remain intact.

ndn33.ru

76 Comments

Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>