Regex for Alphanumeric with length (must start with a letter A or C) RSS

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  Venkat Ganes...

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  Regex for Alphanumeric with length (must start with a letter A or C)

  Aug 19, 2010 02:04 PM|LINK

  <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">Hi,</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste"></div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">I am looking for a regular expression which validates conditions below,</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste"></div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">1. 5 character lenght (Min & Max)</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">2. Must start with a letter ( A or C)</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">3. Textbox canbe left blank</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">4. Should not contain all numerics.</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste"></div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">I have a basic expression below, but I don't know how to extend it.</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste"></div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">^[0-9a-zA-Z]{5}</div>

  Hi,

  I am looking for a regular expression which validates conditions below,

  1. 5 character lenght (Min & Max)

  2. Must start with a letter ( A or C)

  3. Textbox canbe left blank

  4. Should not contain all numerics.

  I have a basic expression below, but I don't know how to extend it.

  ^[0-9a-zA-Z]{5}

  
  

  Thanks

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  PeterCwpan

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  163 Posts

  Re: Regex for Alphanumeric with length (must start with a letter A or C)

  Aug 20, 2010 06:26 AM|LINK

  Basically, point 3 and 4 are not required as the first character must be A or C. Try the following expression:

  ^(A|C)[0-9a-zA-Z]{4}$ 

  • Marked as answer by Wenchao Zeng - MSFT on Aug 25, 2010 01:19 AM
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  Shengqing Ya...

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  Re: Regex for Alphanumeric with length (must start with a letter A or C)

  Aug 20, 2010 09:49 AM|LINK

  Hi,

  Can you make some explanation on the third and the last points? What did you mean by "Textbox canbe left blank" and "Should not contain all numerics" as the string is only 5 char-length?

  Best Regards,
  Shengqing Yang

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