Question: I am displaying calendar using calendar control.

Each date is displayed as Link button.

But i want only last 30 days(dates) from current date, to be enabled for client click. on those days i will write some code on SelectionChanged event. But goal is other dates must be disabled for click.

They should not have link button.

Answer: 
Yahoo mail still does not offer IMAP. My guess is that it's because I'm more likely to use their site than Outlook, meaning I'll have to see their ads.
Many email services (such as those provided by ISPs) only offer a limited size mailbox. This makes it necessary to download your messages to your computer to be able to store the large number of emails that are common these days.