set Date & time regular expression to RegularExpressionValidator according to culture

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C#

ASP.NET

regular-expression

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I am facing a problem of validating date & time according to local culture.

This is my RegularExpressionValidator

C#

<asp:RegularExpressionValidator
       ID="regTime"
       ControlToValidate="txtTime"
       Display="Dynamic"
       Text="Invalid Time Format"
       ValidationExpression="^((1[012])|(0?[1-9])):([0-5][0-9]) ?([aApP][mM])$"
       runat="server">
 </asp:RegularExpressionValidator>

The above validator validates time of en-en culture.

Now as I am developing an applications which needs to be able to handle date and time format of every culture, I want a concrete solution to how to validate date & time depending on culture using RegularExpression.

For example, American time format is h:mm tt (01:20 PM) & German time format is HH:mm (13:20).

Posted 4-Aug-14 20:04pm

markand911

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Maciej Los 5-Aug-14 2:12am

Sounds like AM/PM at then end of time string is not necessary. Adding {0,1} should resolve the problem.
?([aApP][mM]){0,1}$

markand911 5-Aug-14 2:23am

You mean this way
^((1[012])|(0?[1-9])):([0-5][0-9]) ?([aApP][mM]){0,1}$

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**Jaimin H. Soni** · Answer 1 · 2014-08-04T23:22:00

Solution 1

try this Validation expression

@"^(([0-2]\d|[3][0-1])\.([0]\d|[1][0-2])\.[2][0]\d{2})$"

Posted 4-Aug-14 23:22pm

Jaimin H. Soni