Gets the day of the week in a date value and returns the weekday’s name.
DayName ( date )
Argument |
Description |
|---|---|
date |
The date for which you want the name of the day |
String. Returns a string whose value is the name of the weekday (Sunday, Monday, and so on) for date.
DayName returns a name in the language of the deployment files available on the machine where the application is run. If you have installed localized deployment files in the development environment or on a user’s machine, then on that machine the name returned by DayName will be in the language of the localized files.
This expression for a computed field returns Okay if the day in date_signed is not Sunday:
If(DayName(date_signed) <> "Sunday", "Okay", "Invalid Date")
To pass this validation rule, the day in date_signed must not be Sunday:
DayName(date_signed) <> "Sunday"
