ACC: IsDate() Returns False with Date in Long Date Format
ID: Q175385
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The information in this article applies to:
-
Microsoft Access versions 1.0, 1.1, 2.0, 7.0, 97
SYMPTOMS
Moderate: Requires basic macro, coding, and interoperability skills.
When you use the IsDate() function with a date in Long Date format, the
function returns a value of False. For example, the following expression
returns a value of False:
IsDate("Thursday, January 1, 1998")
However, the following expression returns a value of True:
IsDate("January 1, 1998")
CAUSE
The IsDate() function does not recognize days of the week; therefore, it
does not recognize a date that is in Long Date format.
RESOLUTION
Do not use a date in Long Date format with the IsDate() function. If you
want to verify the correct weekday for a particular date, use the Format()
function to show the weekday. For example, the expression
Format("1/10/98","DDDD, MMMM D, YYYY")
returns the value
Saturday, January 10, 1998
MORE INFORMATION
Steps to Reproduce Behavior
- Start Microsoft Access.
- If you are using Microsoft Access version 7.0 or later, press CTRL+G to
open the Debug window. If you are using Microsoft Access 2.0, follow
these steps to open the Immediate window:
- Open any database.
- Click the Module tab, and then click New.
- On the View menu, click Immediate Window.
- Type the following expression, and then press ENTER:
?IsDate("Tuesday, January 01, 1991")
If you are using Microsoft Access version 7.0 or later, the function
returns a value of False to the Debug window. If you are using Microsoft
Access 2.0, the function returns a value of 0 to the Immediate window.
REFERENCES
For more information about the IsDate() function, search the Help Index for
"IsDate function."
For more information about the Format() function, search the Help Index for
"Format function."
Additional query words:
cardinal days
Keywords : kbprg
Version : WINDOWS:1.0,1.1,2.0,7.0,97
Platform : WINDOWS
Issue type : kbprb