Validation on conditional MVC Razor

Question

I am working on MVC razor. I have to do validation depend on condition. Condition is below mentioned

We have country dropdown which is having Country USA and UK. when i select USA from Drop down then I do not want any validation on city and zip text box.

2.When I select US from drop down then i want validation on city and zip text box.

How to implement this scenario on mvc razor.

[What have you tried ?](http://mattgemmell.com/2008/12/08/what-have-you-tried/) — Yasser Shaikh, Aug 25 '12 at 10:02
i know only data annontaion validation on mvc razor.but i don't know how to implement this secnario.if you know about mentioned scenario,please tell me how to do code for this — user1624306, Aug 25 '12 at 10:10
**I** think, You can only do this by `jquery/js` not other way for this.. — Yasser Shaikh, Aug 25 '12 at 10:20

score 0 · Answer 1 · answered Aug 25 '12 at 10:10

You can do this using jQuery validation.

if(...)
    $('#target').rules('add', { ... });
else
    $('#target').rules('remove');

Or you can add custom method:

jQuery.validator.addMethod(...);

See: http://docs.jquery.com/Plugins/Validation/Validator/addMethod

score 0 · Answer 2 · edited May 23 '17 at 10:34

For the client side you have to do the validation yourself by creating custom validation method. You can see an example here.

At the server-side I may suggest you to go for implementing IModelValidatable in the model class. You can get more information about this in this blog post. I also suggest you may create an Address model that wraps up the properties and validation so you don't need to repeat the validation in many models.

Validation on conditional MVC Razor

2 Answers2