using System.ComponentModel; using System.Runtime.CompilerServices; namespace Ehwrj.App.ViewModels; public abstract class ObservableObject : INotifyPropertyChanged { public event PropertyChangedEventHandler? PropertyChanged; protected bool SetProperty(ref T field, T value, [CallerMemberName] string? propertyName = null) { if (EqualityComparer.Default.Equals(field, value)) { return false; } field = value; OnPropertyChanged(propertyName); return true; } protected void OnPropertyChanged([CallerMemberName] string? propertyName = null) { PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName)); } }