I need read only value on the text box and that box i put the calender and i select some date and save it bu it not stores in DB

It sound like you want to have a date-picker (where date can only be filled using a calendar) and then save it in DB.

You can try Calendar Extender.

Have a look at this sample:
Calendar Demonstration[^]
You can set the textbox as disabled. Just get the calendar date on server side and save it to DB.