---
title: "what is email validation's regular expression in asp.net"
description: "what is email validation's regular expression in asp.net"
author: "Andrew Deniel"
published: 2013-06-08
updated: 2020-09-23
canonical: https://www.mindstick.com/interview/1764/what-is-email-validation-s-regular-expression-in-asp-dot-net
category: "asp.net"
tags: ["asp.net"]
reading_time: 1 minute
---
# what is email validation's regular expression in asp.net
By using below reg expression we can validate email id\
^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,4})$\
"^[_a-z0-9-]+": start with any underscore or alphanumeric one or more then one alfanumaric word"(\.[_a-z0-9-]+)*@":any dot(.) or alphanumeric zero times or more the zero and a @ sign"[a-z0-9-]+":one or more alphanumeric "(\.[a-z0-9-]+)*": zero or more dot alphanumeric or -(mins sign)"(\.[a-z]{2,5})$": End with two to 5 character may use dot (.) in that
## Answers
### Answer by Durgesh Tripathi
The RegularExpressionValidator control is used to ensure that an input value matches a specified pattern.\
It's used for email validate,numbervalidate, url validtate, special symbol validate, etc.
Syntax for Regular Expression Validator
\
*
### Answer by Andrew Deniel
By using below reg expression we can validate email id\
^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,4})$\
"^[_a-z0-9-]+": start with any underscore or alphanumeric one or more then one alfanumaric word"(\.[_a-z0-9-]+)*@":any dot(.) or alphanumeric zero times or more the zero and a @ sign"[a-z0-9-]+":one or more alphanumeric "(\.[a-z0-9-]+)*": zero or more dot alphanumeric or -(mins sign)"(\.[a-z]{2,5})$": End with two to 5 character may use dot (.) in that
---
Original Source: https://www.mindstick.com/interview/1764/what-is-email-validation-s-regular-expression-in-asp-dot-net
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