Regular expression for email address

[Mark B]

Does anyone know what regular expression I would use for the asp.net regular
expression validator simply to check if there is a @ character entered?

I don't care about any of the other characters because they may be in other
languages such as Chinese, Arabic or Thai.

 

[Juan T. Llibre]

Try this one, Mark :

[@]




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Does anyone know what regular expression I would use for the asp.net regular expression validator simply to check if
there is a @ character entered?

 

[Mark B]

Didn't work.

Try this one, Mark :

[@]




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Does anyone know what regular expression I would use for the asp.net
regular expression validator simply to check if there is a @ character
entered?

I don't care about any of the other characters because they may be in
other languages such as Chinese, Arabic or Thai.

 

[Juan T. Llibre]

re:
!> Didn't work.

It does work.
Check your implementation.



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Didn't work.

Try this one, Mark :

[@]




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Does anyone know what regular expression I would use for the asp.net regular expression validator simply to check if
there is a @ character entered?

I don't care about any of the other characters because they may be in other languages such as Chinese, Arabic or
Thai.

 

[Scott M.]

Why not use the regular expression for email addresses that is provided with
the validator?

 

[Mark B]

It can't handle non-English text.

Why not use the regular expression for email addresses that is provided
with the validator?

 

[Mark B]

Using the asp:RegularExpressionValidator control though:?


<asp:RegularExpressionValidator ID="RegularExpressionValidator1"
runat="server"
ControlToValidate="TextBox3"
SetFocusOnError="True"
ValidationExpression="[@]">*Enter
valid email
address</asp:RegularExpressionValidator>

Does anyone know what regular expression I would use for the asp.net
regular expression validator simply to check if there is a @ character
entered?

I don't care about any of the other characters because they may be in
other languages such as Chinese, Arabic or Thai.
Try this one, Mark :

[@]

Didn't work.

Works for me:

Regex objRegex = new Regex("[@]");
string strGoodEmail = "12345@7890";
string strBadEmail = "1234567890";
bool blnValidEmail;

blnValidEmail = objRegex.IsMatch(strGoodEmail);
blnValidEmail = objRegex.IsMatch(strBadEmail);

 

[Juan T. Llibre]

re:
!> Why not use the regular expression for email addresses that is provided with the validator?

He stated that the mail addresses might be in
other languages such as Chinese, Arabic or Thai.

Those would fail validation for regular email addresses.

All he is looking for is the presence of @ in a string.
[@] detects that.





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[Juan T. Llibre]

See:

http://www.iridescence.no/post/RegularExpressionValidatorAndPartialMatches.aspx

Thanks to this blog entry by Fredrik Kalseth we have a valid answer !

The correct expression to use in a RegularExpressionValidator is :


ValidationExpression="^.*@.*$"

---000---

ValidationExpression="@" ...works with the RegEx class, as Mark and I pointed out,
but it doesn't work with the RegularExpressionValidator

"^.*@.*$"

...works with the RegularExpressionValidator




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Using the asp:RegularExpressionValidator control though:?


<asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server"
ControlToValidate="TextBox3" SetFocusOnError="True"
ValidationExpression="[@]">*Enter
valid email address</asp:RegularExpressionValidator>

Does anyone know what regular expression I would use for the asp.net regular expression validator simply to check
if there is a @ character entered?

I don't care about any of the other characters because they may be in other languages such as Chinese, Arabic or
Thai.

Try this one, Mark :

[@]

Didn't work.

Works for me:

Regex objRegex = new Regex("[@]");
string strGoodEmail = "12345@7890";
string strBadEmail = "1234567890";
bool blnValidEmail;

blnValidEmail = objRegex.IsMatch(strGoodEmail);
blnValidEmail = objRegex.IsMatch(strBadEmail);

 

[Juan T. Llibre]

re:
!> <sigh> Sometimes I wonder just how they get away with it...

Isn't that something ?
Does the phrase "complying with standards" mean anything any more ?

re:
!> Yet another reason for avoiding these validation "training wheels" controls like the plague...

True enough...




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[Mark B]

Thanks all. Just tested:

^.*@.*$

for Chinese etc and it works great.

 

[Juan T. Llibre]

re:
!> Thanks all. Just tested:
!> ^.*@.*$
!> for Chinese etc and it works great.

I suppose that by "all", you mean "Juan". <g>




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Thanks all. Just tested:

^.*@.*$

for Chinese etc and it works great.

 

[Mark B]

Yes thanks Mark also gave some insight with his training wheels comment.

re:
!> Thanks all. Just tested:
!> ^.*@.*$
!> for Chinese etc and it works great.

I suppose that by "all", you mean "Juan". <g>




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[Juan T. Llibre]

re:
!> Yes thanks



re:
!> Mark also gave some insight with his training wheels comment.

Mark is one of the sharpest programming minds here.
He helps a lot of people, too...




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