How to handle Nullable Reference Types in C# 8 while binding to UI elements?
I'm trying to figure out I've looked through the documentation and I'm still confused about I'm stuck on something that should probably be simple. I'm working on a WPF application using .NET Core 3.1, and I've enabled nullable reference types in my project. I've run into issues with data binding when using properties that are marked as nullable. For instance, I have a ViewModel with a property defined as `string? Name` and I'm binding it to a `TextBox` element. When the property is null, I want the `TextBox` to be empty, but when I set it to a non-null value, it populates correctly. Here's the relevant part of my ViewModel: ```csharp public class UserViewModel : INotifyPropertyChanged { private string? _name; public string? Name { get => _name; set { _name = value; OnPropertyChanged(nameof(Name)); } } public event PropertyChangedEventHandler? PropertyChanged; protected virtual void OnPropertyChanged(string propertyName) { PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName)); } } ``` In my XAML, I have: ```xml <TextBox Text="{Binding Name, UpdateSourceTrigger=PropertyChanged}" /> ``` The issue arises when I run the application. If `_name` is null, the `TextBox` displays an empty string, which is fine. However, when I set `_name` to a string value and then reset it to null, the `TextBox` still displays the last non-null value instead of clearing. I've tried calling `OnPropertyChanged(nameof(Name));` after setting it to null but that didn't seem to help. Additionally, I've checked the binding and the `DataContext` is set correctly. Is there a specific binding mode or converter I should be using to properly handle this case? Any insights would be appreciated! This is part of a larger API I'm building. I'd really appreciate any guidance on this. I'm working on a CLI tool that needs to handle this. Any ideas what could be causing this? Thanks in advance!