I have a DataGrid where its ItemsSource bound to a DataTable. When I Update the DataTable, the data from the ViewModel gets updated but the UI won’t. I already use INotifyPropertyChanged for my ViewModel.
Here is my functions

I have a simple MVVM app to search for SwiftMessages, display a list of them, and then let the user click on a button to open a secondary view to display one. I want the Open button to stay disabled until the user has searched for and selected a message. I’m doing this with two Views, two ViewModels:

I have a user requirement: Select an item in a list. Click on a button. Dialog-mode window opens showing details of that item (window behind doesn’t disappear).

In my WPF project, I need to transfer large SQL data to a datagrid. Naturally, it waits for a long time. I used the MVVM pattern.

In my WPF project, I need to transfer large SQL data to a datagrid. Naturally, it waits for a long time. I used the MVVM pattern.

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I have several text boxes in a WPF application that are bound to a double value, e.g.:

I have a listView of items in my app, each item has some configuration and save button.
MainWindow:

I think it’s time to ask for help! I have an ItemsControl that lists UserControls (called CompoundCardControl):

I’m developing a WPF application with MVVM pattern and I was wondering how can I open and close a window or a dialog from ViewModel or even this is a best practice or not? I mean when it comes to MVVM pattern is always said to avoid code-behind as much as possible so I was thinking should I open and close windows from code-behind or it is OK to do it from the ViewModel. one of the approaches is mentioned is the following one: