Validate Max Text Input Size MVC

Question

I'm struggling on logic here - can i get some ideas please! :)

basically i have a c# MVC3 application that accepts a huge amount of text (100+ text areas), modifies it, and then outputs it.

i want to check the length of the combined text boxes and have the process fail validation if they are over X length.

the only solution i can think of is by combining all the text into a string server side and get the length. I'm expecting my competitors to fully abuse the system and attempt to overload my servers when i go live, so i want to try and validate on the client side too if possible.

can anyone think of an efficient way to do this (client or server-side if you have a nice idea).

Answer 1

You could use maxlength css property or you could decorate your model with [StringLength] data annotation to check length of the string

Answer 2

Build a custom validator using a technique similar to this answer by Daron Dimitrov. That will do the check on both client and server side and you can use a ViewModel to decorate the attribute to apply to all of the inputs.