Wpf combobox text not updating analsexdating com

Posted by / 21-Dec-2020 12:49

Wpf combobox text not updating

In WPF, everytime you navigate to a Page everything gets re-initialized, constructor gets called, loaded methods, everything.

so if you are setting your Data Context inside your View you will no doubt be blowing away that Selected Item that the user selected.

View Model No matter which way I configure this when I come back to the page and the object is reassembled the Combo Box will not select the value.

The object is returning the correct object via the get in the property though.

No errors were being thrown, it just wasn't storing the values!

The problem I have is that when the bound value changes, the selected value in the combobox's textbox does not update.

In my case I was using in complex type (List) as the Item Source and was using a Key Type as the selected value. Selecting a color was possible but it wasnt displayed when the selection closed (although the property was changed!

Add(name) Next _selected Name = default Name End Sub Public Read Only Property My List() As Observable Collection(Of String) Get Return _mylist End Get End Property Public Read Only Property Selected Name() As String Get Return _selected Name End Get End Property End Class Class Window1 Private obj1 As My List Object Private obj2 As My List Object Private odp As Object Data Provider Public Sub New() Initialize Component() Dim namelist1 As New List(Of String) namelist1. Add("Steve") obj1 = New My List Object(namelist1, "Steve") . Find Resource("My List Object"), Object Data Provider) odp. It appears that you have a list of strings and want the binding to just do string matching against the actual item content in the combobox, so if you tell it which property to use for the Selected Value it should work; at least, that worked for me when I ran across this problem. Selected Text Tip: Selected Value is preferred for Combo Style.

Object Instance = obj1 End Sub Private Sub btn_List1_Click(By Val sender As System. It seems like Content would be a sensible default for Selected Value but perhaps it isn't?

I think this could be done in the template of the combobox - somehow make the textbox be bound to the selecteditem of the combobox, or always update when it updates?

EDIT: I didn't make clear - I do implement INotify Property Changed properly and when the value changes I raise Property Changed for my List and my Selected Item.

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new items don't appear to be added to the list of items in the combobox.

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