Wpf listview selecteditem not updating
Similar to @Blam, I suspect that the Has Information implementation in the IItem interface does not implement INotify Property Changed.
Just because you use an Observable Collection does not mean that when a property in a contained item changes that the List Box or other elements will get notified.
1'st, 2'nd, 4'th List Box do good, But 3'rd List Box have error. I'm sorry I cannot serve all behindcode and ~ xaml.
Currently, to make a this function, I use detour way. All items that I select is accumulated just in "lb Loaded Items" I'll consider more your recommendation. You're setting the reference to the object Item List to a new instance, rather than updating the items on the list that WPF is already hooked up to.
and adding an Event handler for Collection Changed, but this has not worked.
I am sure I am missing something stupid, and cannot see the wood for the trees.
First List Box is aggregation of Mart Branches, Second List Box is aggregation of goods as fruit, meat, vegetable ans so on that a Mart sells. (apple, peach, peer, melon...) 4th List Box is aggregation of a kind of selected fruit, for example, if Apple is selected, cortland, crabapple, sansa, gala and so on. After fire Selection Changed, I catch Added Items of Selelction Changed Event Args. WPF automatically hooks up to the Collection Changed event of Observable Collection, but it does not know that you have changed the reference in the code behind.
In the same way, a sub-kind of selected item is displayed on 3'rd List Box and 4'th List Box. Regardless of Selection Mode (Single, Multiple, Extend), Selected Items of 3'rd List Box have all items I have selected. Is Virtualizing="False", Is Synchronized With Current Item="True", But I cannot find solution. Items Source of my List Box is Observable Collection as you see above.
If you would like to stay with the INotified property changed interface you should set up the code as in the following documentation: https://msdn.microsoft.com/en-us/library/ms184414(v=vs.110). The gridview second column contains textboxes (and in case this is relevant to this particular problem, the textboxes are rendered by a datatemplate).I want the listview Selected Item to update when the user clicks in the textbox to type and reflect the row (or listview item) containing the textbox.I had to add in a couple lines because the previous item was not getting unselected protected void Select Current Item(object sender, Keyboard Focus Changed Event Args e) Thanks so much!now i searched for 2 Days why my Binding does not work. I Want to bind the Selected Item to the Code-Behind.