Calender Control Availability Sytem(repost)(repost)

I have a search form that displays available properties when you search,. what i need is a link from the gridview for each property which will link to a calendar control showing which days are booked? for this property( highlighted in red ) and which dates are free ( standard colour? ) I have a calender control which partly works at the moment to the extent that it shows dates? that are booked in a new form. what i need is it to overlap the dates if for instance a property was booked for the last week in the month and the first week in the next month and still highlight them. at the moment it doesnt highlight? when i put these dates in which overlap to the next month, but if i put a week or 2 weeks within the same month it? highlights these!!. Need this fixing and a link form the property I would like to be talked through how to do this. i have a table ready in sql server the code in vb.net