---
title: "How to validate email in C#?"
description: "How to validate email in C#?"
author: "Ravi Vishwakarma"
published: 2024-06-07
updated: 2024-06-07
canonical: https://www.mindstick.com/interview/33892/how-to-validate-email-in-c-sharp
category: "c#"
tags: ["c#", ".net"]
reading_time: 4 minutes
---
# How to validate email in C#?
Validating an email address in C# can be achieved using regular expressions.
Here's a simple example of how you can do it:
```cs
using System;
using System.Text.RegularExpressions;
namespace ConsoleApplication1
{
class Program
{
public static void Main(string[] args)
{
// Array of email addresses to be validated
string[] emails = {
"test@e&&&&xample.com&******",
"user@domain.com",
"john.doe@example.com",
"@3jane_doe1234@gmail.com",
"testuser123@hotmail.com",
"info@website.net",
"support@company.org",
"admin@system.co.uk",
"contact_us@example.org",
"sales@business.com",
"valid.email+alias@gmail.com",
"user.name@domain.co",
"firstname.lastname@sub.domain.com",
"user@subdomain.example.com",
"customer.service@domain.in",
"employee@company.xyz",
"first.last@company.travel",
"someone@domain.museum",
"info@domain.edu",
"example@domain.io",
"name@do#main.travel",
"contact@domain.gov",
"firstname+lastname@example.com",
"test.email@domain.co.jp",
"username@domain.co.uk",
"name@domain.co.kr",
"user@domain.co.in",
"email@sub.domain.biz",
"contact@domain.jobs",
"firstname-lastname@example.com",
"valid_123@domain.com",
"user.name+tag@domain.co.uk",
"username@sub.domain.travel",
"special_chars@example.io",
"customer-service@domain.tech",
"info@nonprofit.org",
"firstname_lastname@domain.co",
"email@domain.guru",
"admin@sub.example.net",
"test@domain.solutions",
"firstname.lastname@domain.us",
"user@domain.company",
"na%me@domain.expert",
"support@domain.firm",
"contact@domain.store",
"email@domain.agency",
"person@domain.education",
"user@domain.center",
"user@domain.pro",
"name@domain.club",
"person@domain.media",
"user@domain.tools",
"firstname_lastname@domain.estate",
"example@domain.tech",
"test@domain.events",
"person@domain.services",
"contact@domain.site",
"info@domain.community",
"sales@domain.shop",
"service@domain.holdings"
};
// Create an instance of the Program class
Program pr = new Program();
// Iterate through each email address in the array
foreach (var email in emails)
{
// Check if the email is valid using the IsValidEmail method
if (pr.IsValidEmail(email))
{
//Reset th console txt color
Console.ResetColor();
// Print if the email is valid
Console.WriteLine(string.Format("Valid: {0}", email));
}
else
{
//Set console text output color for invalid emails
Console.BackgroundColor = ConsoleColor.Red;
// Print if the email is invalid
Console.WriteLine(string.Format("Invalid: {0}", email));
}
}
// Wait for user input to close the console window
Console.ReadLine();
}
///
/// Method to check whether an email is valid or not
///
/// A string containing the email address to validate
/// True if the email is in a valid format, otherwise false
bool IsValidEmail(string email)
{
// Regular expression pattern for validating email addresses
string pattern = @"^[\w.+-]+@[\w-]+\.[\w.-]+$";
// Create a Regex object
Regex regex = new Regex(pattern, RegexOptions.Multiline);
// Use the IsMatch method to validate the email address
return regex.IsMatch(email);
}
}
}
```
## Output :
## Answers
### Answer by Ravi Vishwakarma
Validating an email address in C# can be achieved using regular expressions.
Here's a simple example of how you can do it:
```cs
using System;
using System.Text.RegularExpressions;
namespace ConsoleApplication1
{
class Program
{
public static void Main(string[] args)
{
// Array of email addresses to be validated
string[] emails = {
"test@e&&&&xample.com&******",
"user@domain.com",
"john.doe@example.com",
"@3jane_doe1234@gmail.com",
"testuser123@hotmail.com",
"info@website.net",
"support@company.org",
"admin@system.co.uk",
"contact_us@example.org",
"sales@business.com",
"valid.email+alias@gmail.com",
"user.name@domain.co",
"firstname.lastname@sub.domain.com",
"user@subdomain.example.com",
"customer.service@domain.in",
"employee@company.xyz",
"first.last@company.travel",
"someone@domain.museum",
"info@domain.edu",
"example@domain.io",
"name@do#main.travel",
"contact@domain.gov",
"firstname+lastname@example.com",
"test.email@domain.co.jp",
"username@domain.co.uk",
"name@domain.co.kr",
"user@domain.co.in",
"email@sub.domain.biz",
"contact@domain.jobs",
"firstname-lastname@example.com",
"valid_123@domain.com",
"user.name+tag@domain.co.uk",
"username@sub.domain.travel",
"special_chars@example.io",
"customer-service@domain.tech",
"info@nonprofit.org",
"firstname_lastname@domain.co",
"email@domain.guru",
"admin@sub.example.net",
"test@domain.solutions",
"firstname.lastname@domain.us",
"user@domain.company",
"na%me@domain.expert",
"support@domain.firm",
"contact@domain.store",
"email@domain.agency",
"person@domain.education",
"user@domain.center",
"user@domain.pro",
"name@domain.club",
"person@domain.media",
"user@domain.tools",
"firstname_lastname@domain.estate",
"example@domain.tech",
"test@domain.events",
"person@domain.services",
"contact@domain.site",
"info@domain.community",
"sales@domain.shop",
"service@domain.holdings"
};
// Create an instance of the Program class
Program pr = new Program();
// Iterate through each email address in the array
foreach (var email in emails)
{
// Check if the email is valid using the IsValidEmail method
if (pr.IsValidEmail(email))
{
//Reset th console txt color
Console.ResetColor();
// Print if the email is valid
Console.WriteLine(string.Format("Valid: {0}", email));
}
else
{
//Set console text output color for invalid emails
Console.BackgroundColor = ConsoleColor.Red;
// Print if the email is invalid
Console.WriteLine(string.Format("Invalid: {0}", email));
}
}
// Wait for user input to close the console window
Console.ReadLine();
}
///
/// Method to check whether an email is valid or not
///
/// A string containing the email address to validate
/// True if the email is in a valid format, otherwise false
bool IsValidEmail(string email)
{
// Regular expression pattern for validating email addresses
string pattern = @"^[\w.+-]+@[\w-]+\.[\w.-]+$";
// Create a Regex object
Regex regex = new Regex(pattern, RegexOptions.Multiline);
// Use the IsMatch method to validate the email address
return regex.IsMatch(email);
}
}
}
```
## Output :
---
Original Source: https://www.mindstick.com/interview/33892/how-to-validate-email-in-c-sharp
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