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Field validator expression.

Posted on 2007-03-27
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Last Modified: 2010-04-16
Required field validator. YYYYMM

Numbers only has to be a period.
of type numeric for example 200701


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Question by:mathieu_cupryk
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mrichmon earned 500 total points
ID: 18803278
<asp:requiredfieldvalidator runat="server" controltovalidate="yourfield" errormessage="Please enter this value in the format YYYYMM" display="dynamic" />
<asp:regularexpressionvalidator runat="server" controltovalidate="yourfield"  validationexpression="[0-9]{6}" errormessage="Please enter this value in the format YYYYMM" display="dynamic" />

But that does allow 000701

If you want to restrict the years you need a more complex validation expression like:

[1-2][0-9]{3}(0[1-9]|11|12)

which makes the year start with a 1 or 2 followed by 3 digits and a valid month
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