Use C# code to Delete all read outlook emails, meetings and appointments in EWS

See more:

C#2.0

C#3.0

C#

.NET

C#3.5

EWS

, +

hi,
When I was trying to delete everything other than a normal email.
I want to delete appointments, Meetings etc.

Appointment appointment = new Appointment(service);

appointment.Subject = subject;

appointment.Body = body;

appointment.Delete(DeleteMode.MoveToDeletedItems);  

And i was also trying to select all read emails and delete them.

 int readEmailCount = 0;

                    SearchFilter searchFilter = new SearchFilter.SearchFilterCollection(LogicalOperator.And, new SearchFilter.IsEqualTo(EmailMessageSchema.IsRead, true));

                    ItemView view = new ItemView(999);

                    FindItemsResults<item> findResults = service.FindItems(WellKnownFolderName.Inbox, searchFilter, view);
                    readEmailCount = findResults.Items.Count;
                    Console.WriteLine("Number of emails read : " + readEmailCount);

                    for (int i = 0; i < readEmailCount; ++i )
                    {
                        while(emailMessage.Subject != null)
                        {
                        if (i > 0)
                        {
                            Console.WriteLine("================================================");
                            Console.WriteLine("\n");
                            Console.WriteLine("{0}.Read mail from outlook inbox", ++i);
                            Console.WriteLine(string.Format("Subject:-     {0}", emailMessage.Subject));
                            // emailMessage.Delete(DeleteMode.MoveToDeletedItems);
                            Console.WriteLine("================================================");
                            Console.WriteLine("\n");
                        }
                    }
                    } 

Could you please help me to solve this

System.InvalidOperationException: This operation can't be performed because this service object doesn't have an Id.
   at Microsoft.Exchange.WebServices.Data.ServiceObject.ThrowIfThisIsNew()
   at Microsoft.Exchange.WebServices.Data.Item.InternalDelete(DeleteMode deleteMode, Nullable`1 sendCancellationsMode, Nullable`1 affectedTaskOccurrences, Boolean suppressReadReceipts)
   at Microsoft.Exchange.WebServices.Data.Item.Delete(DeleteMode deleteMode, Boolean suppressReadReceipts)
   at Microsoft.Exchange.WebServices.Data.Item.Delete(DeleteMode deleteMode)
   at AP.Utils.MailUtil.SendMail_HTML(String from_address, String to_address, String cc_address, String subject, String body, String smtp_server, MailFileAttachment fileAttachment)

Thanks in advance