Regex MVC model Validation

Question

This is a working regex script in JS:

var emailRegExp   = /^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/;

How would I escape characters like \ and "

I would like to use it for my model validation like this:

[RegularExpression(@"/^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/")]

But it fails when I escape with either two \ or using @ before the string.

How would this script look like in a C# model validation?

Thanks!

Avinash Raj · Accepted Answer · 2015-02-17 16:48:44Z

1

You need to remove the js delimiter that is the the forward slash present at the start and the end.

@"^(([^<>()[\]\\.,;:\s@""]+(\.[^<>()[\]\\.,;:\s@""]+)*)|("".+""))@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$"

edited Feb 17, 2015 at 16:48

answered Feb 17, 2015 at 15:17

Avinash Raj

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2 Comments

Reft Over a year ago

I would love to accept your answer but it fails with the " character. @"^(([^<>()[]\\.,;:\s@\" <---- here

Reft Over a year ago

I had to escape the double quotes aswell like this: @"^(([^<>()[]\\.,;:\s@\"" Please edit your answer so I can accept it :)

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