A nice approach for a LOB WPF application

using System;

namespace Mainardi.ViewModels.VMBase
{
    public abstract class BaseWorkspaceViewModel : ViewModelBase
    {
        protected string[] _error;

        private Object _DataContext;

        private bool _canSave;

        public bool CanSave
        {
            get { return _canSave; }
            set
            {
                if (_canSave != value)
                {
                    _canSave = value;
                    OnPropertyChanged(this, "CanSave");
                }
            }
        }

        public Object DataContext
        {
            get { return _DataContext; }
            set
            {
                if (_DataContext != value)
                {
                    _DataContext = value;
                    OnPropertyChanged(this, "DataContext");
                }
            }
        }

        public abstract Mainardi.ViewModels.CommandBase.CommandModel DeleteCommand { get; }

        public abstract Mainardi.ViewModels.CommandBase.CommandModel SaveCommand { get; }

        public abstract Mainardi.ViewModels.CommandBase.CommandModel CancelCommand { get; }
    }
}