public static SalaryProvider CreateSalaryProvider(TypeOfContract typeOfContract)
{
var providers = Assembly.GetAssembly(typeof(SalaryProvider))
.GetTypes()
.Where(t => typeof(SalaryProvider).IsAssignableFrom(t));
var provider = providers.Single(x => x.Name.ToLowerInvariant().Contains(typeOfContract.ToString().ToLowerInvariant()));
return((SalaryProvider)Activator.CreateInstance(provider));
}
