Question

I want to send a reply email. I found this example in microsoft examples on using EWS. The problem is I get this error when running this piece of code.

        ExchangeService service = new ExchangeService(ExchangeVersion.Exchange2007_SP1);
        EmailMessage mes = new EmailMessage(service);
        string replyto = mes.Sender.Address;
        Console.WriteLine(replyto);
        mes.Subject = "Notification Received";
        mes.Body = "Your notification has successfully been added to the site";
        mes.ToRecipients.Add(replyto);
        mes.Send();

Error: Error: You must load or assign this property before you can read its value.

Answer 1

mes.Sender.Address has not been assigned – you cannot read a property until you assign it a value. See EmailMessage.Sender on MSDN for reference.