Custom Regular Expression not validating on the client side

Question

I have build a custom attribute to validate on the client side a positive decimal value. The problem is that when I apply the regular expression directly to the property, it

Answer 1

You need to register your attribute in global.asax. In its Application_Start() method, add the following code:

DataAnnotationsModelValidatorProvider.RegisterAdapter(typeof(PositiveDecimalAtt‌​ribute), typeof(RegularExpressionAttributeAdapter));