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target date is first Sunday from today's date

Medium Priority
Last Modified: 2012-05-06
I have a formfield textbox that has a dropdown calendar attached to it.

Here are my questions:
1. How can I autopopulate the first coming sunday in the txt field: Me.txtTargetDate.Text = DateTime.Now.AddMonths(+3).ToString("d"). What do I replace the AddMonths(+3) with?
2. How can I disable all other days (except for Sunday) on the ajax calendar?
or if that's not possibel how can I validate that Sunday are only valid days to be selected?

Thanks  a lot!
Watch Question

Senior .Net Developer
DateTime.Now.AddDays(7 - DateTime.Now.DayOfWeek)

to validate is sunday:

if DayOfWeek.Sunday.CompareTo(ctype(.txtTargetDate.Text,date))= 0 then
'is sunday.

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