/// <summary>
/// This method returns all created grade of the given type.
/// </summary>
/// <param name="gradeType">This is the type of the grade.</param>
/// <returns>Grade List.</returns>
public static List <WelcomeMessage> GetAll(WelcomeMessageTypeEnum welcomeMessageType)
{
return(InMemoryDatabaseSingleton.DatabaseInstance.SelectMany <WelcomeMessage>(
x => x.WelcomeMessageType == welcomeMessageType).OrderByDescending(
x => x.CreationDate).ToList());
}
/// <summary>
/// Gets the last created class from the application.
/// </summary>
/// <param name="gradeTypeEnum">This is the grade type enum.</param>
/// <returns>The grade</returns>
public static WelcomeMessage Get(WelcomeMessageTypeEnum welcomeMessageTypeEnum)
{
return(InMemoryDatabaseSingleton.DatabaseInstance.SelectMany <WelcomeMessage>(x => x.WelcomeMessageType == welcomeMessageTypeEnum &&
x.IsCreated).OrderByDescending(x => x.CreationDate).First());
}
