public MainVm()
{
AppliedCommands = new Stack <CommandWithUserState>();
Users = new ObservableCollection <User>(
new User[] {
new User {
Name = "test1", Age = 15
},
new User {
Name = "test2", Age = 10
}
});
Edit = new Mvvm1125.MvvmCommand(
() => {
EditUser = new CommandWithUserState(SelectedUser);
NotifyPropertyChanged("EditUser");
},
() => SelectedUser != null);
Apply = new Mvvm1125.MvvmCommand(
() => {
EditUser.Execute(null);
AppliedCommands.Push(EditUser);
EditUser = null;
NotifyPropertyChanged("EditUser");
},
() => !(SelectedUser == null || EditUser == null));
Undo = new Mvvm1125.MvvmCommand(
() => {
var lastCommand = AppliedCommands.Pop();
lastCommand.Undo();
},
() => AppliedCommands.Count != 0);
}