<div>
I used ideas from both the regex validated a date nice. With a proper format date I could format without fear of it being a bad date. &nbsp;Thanks Both
</div>


<div>
Thanks for the assist, and the points.<br />
<br />
Good luck &amp;&nbsp;have a great day.
</div>


<div>
<div class="content wysiwyg-content">
I have this expression in a &nbsp;&lt;asp:RegularExpressionVali<wbr />dator control<br />
(0[1-9]|1[012])[- /.](0[1-9]|[12][0-9]|3[01]<wbr />)[- /.](19|20)\d\d<br />
<br />
It has a problem with the date. It will allow any day in any month up to the 31. &nbsp;Is there a regex for a &quot;Valid Date&quot; format &nbsp;I need it in mm/dd/yyyy format.<br />
<br />
Leap year would be super great to catch<br />
<br />
Thanks <br />
chuck<br />

</div>
</div>


I have this expression in a  <asp:RegularExpressionValidator control
(0[1-9]|1[012])[- /.](0[1-9]|[12][0-9]|3[01])[- /.](19|20)\d\d

It has a problem with the date. It will allow any day in any month up to the 31.  Is there a regex for a "Valid Date" format  I need it in mm/dd/yyyy format.

Leap year would be super great to catch

Thanks 
chuck


I used ideas from both the regex validated a date nice. With a proper format date I could format without fear of it being a bad date.  Thanks Both

Thanks for the assist, and the points.

Good luck &amp; have a great day.

Need regex for proper date

I have this expression in a  &lt;asp:RegularExpressionValidator control
(0[1-9]|1[012])[- /.](0[1-9]|[12][0-9]|3[01])[- /.](19|20)\d\d

It has a problem with the date. It will allow any day in any month up to the 31.  Is there a regex for a &quot;Valid Date&quot; format  I need it in mm/dd/yyyy format.

Leap year would be super great to catch

Thanks 
chuck


A regular expression ("regex") is a sequence of characters that define a search pattern, mainly for use in pattern matching with strings, or string matching, i.e. "find and replace"-like operations. Regular expression processors are found in several search engines, search and replace dialogs of several word processors and text editors, and in the command lines of text processing utilities, such as sed and AWK. Many programming languages provide regular expression capabilities, some built-in, for example Perl, JavaScript, Ruby, AWK, and Tcl, and others via a standard library, for example .NET languages, Java, Python and C++ (since C++11). Most other languages offer regular expressions via a library.

Regular Expressions

The successor to Active Server Pages, ASP.NET websites utilize the .NET framework to produce dynamic, data and content-driven web applications and services. ASP.NET code can be written using any .NET supported language. As of 2009, ASP.NET can also apply the Model-View-Controller (MVC) pattern to web applications

ASP.NET

C# is an object-oriented programming language created in conjunction with Microsoft’s .NET framework. Compilation is usually done into the Microsoft Intermediate Language (MSIL), which is then JIT-compiled to native code (and cached) during execution in the Common Language Runtime (CLR).