How can I validate an entry of a field by using RegularExpressionValidator?

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Hey guys

I used this code:

XML

<asp:TextBox ID="_textBoxCustomerNr" runat="server" Width="150"></asp:TextBox>
<br />
<asp:RegularExpressionValidator ID="_regularExpressionValidatorCustomerNr" runat="server" Display="Dynamic" ControlToValidate="_textBoxCustomerNr" ValidationExpression="^[\s\S]{3,50}$" EnableClientScript="false"
ErrorMessage="Customer Nr. too short!">
</asp:RegularExpressionValidator>

Now what I want:

whenever I enter something int the textBox _textBoxCustomerNr, the RegularExpressionValidator should be validated and the error message should be displayed.

this works for the first textbox but not for the others, why? Did I forget something? I turned EnableClientScript to "true" for every textbox, but that doesn't help anything. Now it's turned into "false" - only for the first one.

I would be very happy for every help.

Thanks
valentigra

Posted 21-Nov-13 22:04pm

v_tigra

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Er Daljeet Singh 22-Nov-13 4:19am

post the whole code here.
so we can find where is the problem.

v_tigra 22-Nov-13 4:28am

that's the code, I already posted it. Every other textbox has the same code (only ID changes)s

Er Daljeet Singh 22-Nov-13 4:55am

but the code you have posted work fine if you set EnableClientScript=true.
this property simple check whether you want to check the validation at server of client side.
if this property is true then its means we want to check the validation at client side.

3 solutions

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♥…ЯҠ…♥ · Answer 1 · 2013-11-21T23:24:00

Solution 1

Hi valentigra,

If you want other text box to validate the same condition then you should use another asp:RegularExpressionValidator control with ControlToValidate ="_Text2" attribute.
Since you have set _regularExpressionValidatorCustomerNr with attribute ControlToValidate to only one textbox that is _textBoxCustomerNr, you cant expect other textbox to follow the same validation.
For every text box you should have individual Regularexpression validation control.

Updated solution:

EnableClientScript="True" also did not work for you?

Hope this helps you a bit.

Regards,
RK

Posted 21-Nov-13 23:24pm

♥…ЯҠ…♥

Updated 22-Nov-13 1:56am

v4

Comments

v_tigra 22-Nov-13 7:12am

yes that's right, but I also have individual regularexpressions for every textbox.. I still don't understand why it only works for the first one.

♥…ЯҠ…♥ 22-Nov-13 7:19am

If you want 3 text box to validate, then you need to add three regularexpressionvalidator with controltovalidate attribute assign to each and every textbox resp., then only it will satisfy what you are expecting in this case.

v_tigra 22-Nov-13 7:47am

Please read my comment at solution 3 - maybe you can help me better after reading it

♥…ЯҠ…♥ 22-Nov-13 8:01am

Now i got, but totally weird situation... i'll google it for you

v_tigra 22-Nov-13 8:07am

thank you a lot, I already googled for it and didn't find what I was searching for. I hope you can help me.

♥…ЯҠ…♥ 22-Nov-13 8:13am

why you are not thinking about javascript since you want to validate it in client side, its better to go with javascript right?

v_tigra 22-Nov-13 8:35am

Hm, because I thought this should work.. I don't find the failur

♥…ЯҠ…♥ 22-Nov-13 8:38am

I think its not failure, stuck up here so that you can move on to next option right, which is easier to implement,just suggesting.. no hard feelings.

v_tigra 22-Nov-13 8:51am

I have to analyze my code again.. maybe I forgot something.

Tejas Sawant 13 · Answer 2 · 2013-11-21T23:48:00

Solution 3

Hi valentigra,

Solution 1 is best , you just need to set validation group property of all text boxes same also for button on which you have to perform all this validations.
You must need separate Regular Expression Validation For each textbox if you want to do validation using RegularExpressionValidator.
Or you can write validation function programatically and call that function for each textbox entry.?

reply me If it works or not ?

Posted 21-Nov-13 23:48pm

Tejas Sawant 13

Comments

v_tigra 22-Nov-13 7:18am

I don't want to execute this validations by clicking the button, I really would like to get error-messages by entering something wrong in the individual textboxes.

Example:

I have TextBox Name and TextBox E-Mail, both TextBoxes got individual RegularExpressionValidators (ID="regexValidatorName" and ID="regexValidatorEmail"). The character length of TextBox Name must be between 3 and 50. So, if I write "S", the errorMessage must be shown directly next to the TextBox containing this sentence "Name too short!". Same by the TextBox Email.
The validation should be done while writing, not if I click a button, do you understand now what I want to do with those regularexpressionvalidators?

[no name] 22-Nov-13 23:57pm

for name validation what expression you write ?

Miriyala SandeepKumar · Answer 3 · 2013-11-21T23:39:00

Solution 2

Can you tell me your test cases for above questions .

Posted 21-Nov-13 23:39pm

Miriyala SandeepKumar