class UserSaveValidator : AbstractValidator<UserData>
	{
		public UserSaveValidator()
		{

			RuleFor(x => x.UserName).NotEmpty().WithMessage(Properties.Resources.Account_MustSpecifyUsername);
		}
	}

ResourceManager rm = new ResourceManager("Monitoring.Properties.Resources", System.Reflection.Assembly.GetExecutingAssembly());
CultureInfo ci = Thread.CurrentThread.CurrentCulture;
String str = rm.GetString("Account_MustSpecifyUsername", ci);

public class ResourceWrapper
	{
		protected ResourceWrapper() { }
		private sealed class SingletonCreator
		{
			private static readonly ResourceWrapper instance = new ResourceWrapper();
			public static ResourceWrapper Instance { get { return instance; } }
		}

		private ResourceManager _rm;
		public static ResourceWrapper Instance
		{
			get { return SingletonCreator.Instance; }
		}

		public void Init(ResourceManager RM)
		{
			_rm = RM;
		}

		public void SelectCulture(string culture)
		{
			if (string.IsNullOrEmpty(culture)) culture = "ru";

			// Inform the threads of the new culture      
			Thread.CurrentThread.CurrentCulture = CultureInfo.CreateSpecificCulture(culture);
			Thread.CurrentThread.CurrentUICulture = new CultureInfo(culture);
		}

		public string GetStringByName(string name)
		{
			return _rm.GetString(name, Thread.CurrentThread.CurrentCulture);
		}
	}

class UserSaveValidator : AbstractValidator<UserData>
	{
		public UserSaveValidator()
		{

			RuleFor(x => x.UserName).NotEmpty().WithMessage(Properties.Resources.Account_MustSpecifyUsername);
		}
	}

[ValidateParameter("model", typeof(UserSaveValidator))]
		public ActionResult Submit(UserData model)
		{}

			<TextBlock>
				<Hyperlink Click="Hyperlink_Click" CommandParameter="ru">
					<Image Height="12" Source="/Monitoring;component/Images/Flag/ru.png" Margin="5"/>
				</Hyperlink>
				<Hyperlink Click="Hyperlink_Click" CommandParameter="en">
					<Image Height="12" Source="/Monitoring;component/Images/Flag/gb.png" Margin="5"/>
				</Hyperlink>
			</TextBlock>

private void Hyperlink_Click(object sender, RoutedEventArgs e)
		{
			MessageBox.Show(ResourceWrapper.Instance.GetStringByName("Account_MustSpecifyUsername"));
			Hyperlink hl = sender as Hyperlink;

			ResourceWrapper.Instance.SelectCulture(hl.CommandParameter.ToString());
		}