vStationURM/Tools/UpdateDataTool/RelayCommand.cs

using System;
using System.Windows.Input;

namespace UpdateDataTool
{
	public class RelayCommand : ICommand
	{
		private readonly Action<object> _executeAction;
		private readonly Func<object, bool> _canExecute;

		/// <summary>
		/// Occurs when changes occur that affect whether or not the command should execute.
		/// </summary>
		public event EventHandler CanExecuteChanged;

		/// <summary>
		/// Initializes a new instance of the <see cref="RelayCommand"/> class.
		/// </summary>
		/// <param name="execute">
		/// The action that will be executed.
		/// </param>
		/// <param name="canExecute">The function that indicates whether the command can be executed.</param>
		public RelayCommand(Action execute, Func<bool> canExecute = null)
			: this(p => execute(), canExecute == null ? (Func<object, bool>)null : p => canExecute())
		{
		}
		public RelayCommand(Action<object> executeAction, Func<object, bool> canExecute = null)
		{
			_executeAction = executeAction;
			_canExecute = canExecute;
		}

		public void Execute(object parameter)
		{
			if (CanExecute(parameter))
			{
				_executeAction(parameter);
			}
		}

		public bool CanExecute(object parameter)
		{
			return _canExecute == null || _canExecute(parameter);
		}
	}
}