CustomVaidator Examples


Want to know why do we need CustomValidators. Can you give me any real time example or implementation.

I want to know if it can help in any of my web pages.

Thank yall
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CustomValidator might be helpful when your validation rule applies to many controls. for example, if you have 2 DropDownList's where the second depends on the SelectedValue of the 1st, a CuatomValidator may be used to validate a rule that applies to the selection of both controls.
CUstom validator is helpful when u need conditional checking. Let us say you have 3 fields country state and city and if the country name entered is US then the user must enter state other wise he can leave it blank. In such a situation you can use custom validator and implement your custom logic through it.
you can test the custom validator online
try this:

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