private static void CanWriteCheck(object obj)
{
//构造实例
Attribute checking = new AccountsAttribute(Accounts.Checking);
//构造应用于类型的特性实例
Attribute validAccounts = Attribute.GetCustomAttribute(obj.GetType(), typeof(AccountsAttribute), false);
if ((validAccounts != null) && checking.Match(validAccounts))
{
Console.WriteLine("{0} types can write checks.", obj.GetType());
}
else
{
Console.WriteLine("{0} types can not write checks.", obj.GetType());
}
}
