How to verify string is a valid email in C#?

There are many ways to validate an email address
1) Using System.Net.Mail.MailAddress() Method
2) Using EmailAddressAttribute Class

Example Using System.Net.Mail.MailAddress()

The MailAddress class is used by the SmtpClient and MailMessage classes to store address information for email messages.

using System;

public class Example
{
    static bool IsValidEmail(string email)
    {
	try
	{
		var addr = new System.Net.Mail.MailAddress(email);
		return addr.Address == email;
	}
	catch
	{
		return false;
	}
    }
	
    public static void Main()
    {
	Console.WriteLine(IsValidEmail("info@mockstacks.com"));
	Console.WriteLine(IsValidEmail("info .com"));
    }
}

Output

True
False

Example Using EmailAddressAttribute Class

Initializes a new instance of the EmailAddressAttribute class which has a built in method called IsValid() and takes string email address as parameter.

Make sure to include using System.ComponentModel.DataAnnotations;

using System;
using System.ComponentModel.DataAnnotations;

public class Example
{
	static bool IsValidEmail(string email)
	{
	    if(email == null){
		return false;
	    }
	if(new EmailAddressAttribute().IsValid(email))
	{
		return true;
	}
	else
	{

		return false;
	}
    }
	
    public static void Main()
    {
	Console.WriteLine(IsValidEmail("info@mockstacks.com"));
	Console.WriteLine(IsValidEmail("info .com"));
    }
}

Output

True
False

Conclusion

In this page (written and validated by A. Gawali) you learned about How to verify string is a valid email in C#? . What's Next? If you are interested in completing C# tutorial, we encourage you simply to start here: C# Tutorial.

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