CODEWITHSUNDEEP
asp.netvalidation
BigJim
BigJim

Reputation: 411

CustomValidator not firing?

Hi I have a textbox in a RadGrid which is required only when another control which is a dropdownbox has a certain value.

I think the best way to make use of a CustomValidator here but you need a RequiredFieldValidator to make the Custom one fire.

However this is not going to work for me because the field is only required when the dropdownbox has a particular value. If it doesn't it doesn't matter if nothing is in the Textbox

Any suggestions?

Upvotes: 0

Views: 1296

Answers (3)

Dan Pawlaczyk
Dan Pawlaczyk

Reputation: 11

set the ValidateEmptyText="yes" for the CustomValidator. then it will fire even if the value is blank.

Upvotes: 1

David
David

Reputation: 73564

Just an idea....

Set up the validators (the custom one and the requiredfield one) and have it disabled, then in the drop-down's SelectedIndexChanged event, check for the value you're looking for and enable the validators when required. Of course, that's a server-side solution requiring a postback, but it can be done in Javascript or via Ajax as well.

Upvotes: 1

brumScouse
brumScouse

Reputation: 3216

You could make use of the .NET client side validation API and turn on/off the validator depedant on the value in the drop down box.

ValidatorEnable(val, enable) is used to turn on or off a particular validator (where val is the validator and enable is a boolean indicating wheter to enable or disable it.

http://msdn.microsoft.com/en-us/library/aa479045.aspx

Upvotes: 1

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