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How to send email and create appointment item using EWS Managed API in VB.net?

  • Article

It does seem to be a bit of a dearth of VB.net samples for Exchange Web Service Managed API. So here is a sample VB.net code which demonstrates:

  • Send Email
  • Create Appointment

NOTE: Following programming examples is for illustration only, without warranty either expressed or implied, including, but not limited to, the implied warranties of merchantability and/or fitness for a particular purpose. This sample code assumes that you are familiar with the programming language being demonstrated and the tools used to create and debug procedures. This sample code is provided for the purpose of illustration only and is not intended to be used in a production environment. 

 Imports System.Net

 Imports System.Net.Security

 Imports Microsoft.Exchange.WebServices.Data

 Imports System.Security.Cryptography.X509Certificates

  

 Public Class Form1

     'Creating Servie object for EWS service binding endpoint

     Dim service As New ExchangeService(requestedServerVersion:=ExchangeVersion.Exchange2007_SP1)

  

     Private Sub cmdSendMail_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdSendMail.Click

         Try

             'Create new message object and set properties required to send a mail

             Dim message As EmailMessage = New EmailMessage(service)

             message.Subject = "Hello from the EWS Managed API"

             message.Body = "Now that's easy!"

             message.ToRecipients.Add("testex2007@bex2007.com")

             message.SendAndSaveCopy()

             MessageBox.Show("Email Sent!!!")

         Catch ex As Exception

             MessageBox.Show(ex.Message)

         End Try

  

     End Sub

  

     Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

         'Add a valid EWS service end point here or user Autodiscover

         service.Url = New Uri("https://server/ews/exchange.asmx")

         'Add a valid user credentials

         service.Credentials = New WebCredentials("User", "Password", "Domain")

         'To address the SSL challenge

         ServicePointManager.ServerCertificateValidationCallback = New RemoteCertificateValidationCallback(AddressOf ValidateCertificate)

  

     End Sub

  

     Private Function ValidateCertificate(ByVal sender As Object, ByVal certificate As X509Certificate, ByVal 

  

 chain As X509Chain, ByVal sslPolicyErrors As SslPolicyErrors) As Boolean

         'Return True to force the certificate to be accepted.

         Return True

     End Function

  

     Private Sub cmdCreateAppointment_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) 

 Handles cmdCreateAppointment.Click

         Try

             'Create appointment object and set properties as required

             Dim appt As Appointment = New Appointment(service)

             appt.Subject = "Holidays"

             appt.Body = "The appointment is for holiday placeholder"

             appt.Start = New DateTime(2010, 11, 1)

             appt.End = appt.Start.AddHours(24)

             appt.IsAllDayEvent = True

             appt.LegacyFreeBusyStatus = LegacyFreeBusyStatus.OOF

             appt.Save(WellKnownFolderName.Calendar, SendInvitationsMode.SendToNone)

             MessageBox.Show("Appointment Added to Calendar")

         Catch ex As Exception

             MessageBox.Show(ex.Message)

         End Try

     End Sub

 End Class

We can refer to the articles mentioned below for further reading:

Enjoy EWS and Happy Holidays!!!