DelegateCommand for MVVM

DelegateCommand

using System;

namespace CommandHelpers
{
    public class DelegateCommand : System.Windows.Input.ICommand
    {

        #region Fields

        private readonly Action<object> execute;
        private readonly Func<object, bool> canExecute;

        #endregion Fields

        #region Initializaton

        public DelegateCommand(Action<object> pExecute, Func<object, bool> pCanExecute)
        {
            execute = pExecute;
            canExecute = pCanExecute;
        }

        public DelegateCommand(Action<object> pExecute)
            : this(pExecute, null)
        { 
        }

        #endregion Initializaton

        #region ICommand implementation

        public bool CanExecute(object commandParameter)
        {
            return null == canExecute ? false : canExecute(commandParameter);
        }

        public event EventHandler CanExecuteChanged;

        public void Execute(object commandParameter)
        {
            if (CanExecute(commandParameter))
                execute(commandParameter);
        }

        #endregion ICommand implementation
    }
}