How to update data in ComboBox after changing ListBox/db?

Question

when you click on the button (change delete add) a window opens with a TextBox in which I specify name, age
so after I click ok, the data is correctly displayed in LisBox, which I can’t say about comboBox

when you click Open_Click, a window opens with LisBox, which also displays name, age data and here it is possible to change delete add (new entry)

on the main window there is a comboBox that displays name, age data,

Answer 1

Hi @Максимилиан Янулевич, Welcome to Q&A. You could try the following code to get what you wanted.

One easy way：

//after modifying the data
DataContext=null;
DataContext =db.Users.Local.ToObservableCollection(); 

For real-time modification of Name and Age, change the binding method to:

<TextBlock Text="{Binding Name,Mode=TwoWay}" FontSize="16"/>
<TextBlock Text="{Binding Age, Mode=TwoWay}" FontSize="13"/>

You may need to refer to this document:Binding declarations overview (WPF .NET)

Another way you should implement INotifyPropertyChanged interface for your binding source object.

Best Regards,

Jiale

---

If the answer is the right solution, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment". 

Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.