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New Message on MumbaiUserGroup
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From: Vipul
Message 4 in Discussion
hi .,
you can use validation controls like RegularExpressionValidator for that
purpose.
An extract from MSDN documentation is as undeR:
Client-Side Validation
The validation controls always perform validation checking in server code.
However, if the user is working with a browser that supports DHTML, the
validation controls can also perform validation using client script. With
client-side validation, any errors are detected on the client when the form is
submitted to the server. If any of the validators are found to be in error, the
submission of the form to the server is cancelled and the validator's Text
property is displayed. This permits the user to correct the input before
submitting the form to the server. Field values are revalidated as soon as the
field containing the error loses focus, thus providing the user with a rich,
interactive validation experience.
Note that the Web Forms page framework always performs validation on the
server, even if the validation has already been performed on the client. This
helps prevent users from being able to bypass validation by impersonating
another user or a preapproved transaction.
Client-side validation is enabled by default. If the client is capable, uplevel
validation will be performed automatically. To disable client-side validation,
set the page's ClientTarget property to "Downlevel" ("Uplevel" forces
client-side validation).
Hope this solves your problem
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