Validating e-mail addresses in an IList interface Synchronously

ComponentSoft UltimateEmailValidator provides a number of convenient ways to verify email addresses, one of them is verifying email addresses in an IList interface.

The example below will demonstrate how to use ValidateEmails method to verify email addresses in an IList interface:

Validating a single e-mail address

1. Add using directives to your code to create aliases for existing namespaces and avoid having to type the fully qualified type names. The code looks similar to the following:

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   using ComponentSoft.Net;

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   Imports ComponentSoft.Net

2. Create a new instance of the EmailValidator class.

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   // Create a new instance of the EmailValidator class. EmailValidator client = new EmailValidator();

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   ‘ Create a new instance of the EmailValidator class. Dim client As New EmailValidator()

3. Now pass the list containing e-mail addresses you want to validate to the ValidateEmails method. The code looks similar to the following:

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   em.MessageLogging += em_MessageLogging; em.EmailValidated += em_EmailValidationCompleted; try { string[] list = new string[3] { “test1@testdomain.com“, “test2@testdomain.com“, “test3@testdomain.com” }; em.ValidateEmails(list); } catch (EmailValidatorException exc2) { Console.WriteLine(“EmailValidatorException: “ + exc2.Message); }

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   AddHandler em.MessageLogging, AddressOf em_MessageLogging AddHandler em.EmailValidated, AddressOf em_EmailValidationCompleted Try Dim list() As String = {“test1@testdomain.com”, “test2@testdomain.com”, “test3@testdomain.com”} em.ValidateEmails(list) Catch exc2 As EmailValidatorException Console.WriteLine(“EmailValidatorException: “ & exc2.Message) End Try

Final example code

C#

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static void Main() { // Create a new instance of the EmailValidator class. EmailValidator em = new EmailValidator(); em.MessageLogging += em_MessageLogging; em.EmailValidated += em_EmailValidationCompleted; try { string[] list = new string[3] { “test1@testdomain.com“, “test2@testdomain.com“, “test3@testdomain.com” }; em.ValidateEmails(list); } catch (EmailValidatorException exc2) { Console.WriteLine(“EmailValidatorException: “ + exc2.Message); } } static void em_EmailValidationCompleted(object sender, EmailValidatedEventArgs e) { if (e.ValidatedLevel == ValidationLevel.Success) Console.WriteLine(e.EmailAddress + ” validation done”); else Console.WriteLine(e.EmailAddress + ” validation failed at “ + e.ValidatedLevel); } static void em_MessageLogging(object sender, EmailValidatorLogEventArgs e) { Console.Write(e.SmtpTranscript); }

VB.NET

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Sub Main() ‘ Create a new instance of the EmailValidator class. Dim em As New EmailValidator() AddHandler em.MessageLogging, AddressOf em_MessageLogging AddHandler em.EmailValidated, AddressOf em_EmailValidationCompleted Try Dim list() As String = {“test1@testdomain.com”, “test2@testdomain.com”, “test3@testdomain.com”} em.ValidateEmails(list) Catch exc2 As EmailValidatorException Console.WriteLine(“EmailValidatorException: “ & exc2.Message) End Try End Sub Private Sub em_EmailValidationCompleted(ByVal sender As Object, ByVal e As EmailValidatedEventArgs) If e.ValidatedLevel = ValidationLevel.Success Then Console.WriteLine(e.EmailAddress & ” validation done”) Else Console.WriteLine(e.EmailAddress & ” validation failed at “ & e.ValidatedLevel) End If End Sub Private Sub em_MessageLogging(ByVal sender As Object, ByVal e As EmailValidatorLogEventArgs) Console.Write(e.SmtpTranscript) End Sub