protected override void Execute(CodeActivityContext context) { Microsoft.Office.Interop.Outlook.Application outlookApplication = new Microsoft.Office.Interop.Outlook.Application(); Microsoft.Office.Interop.Outlook.MailItem email = (Microsoft.Office.Interop.Outlook.MailItem)outlookApplication.CreateItem(Microsoft.Office.Interop.Outlook.OlItemType.olMailItem); var to = To.Get(context); var cc = CC.Get(context); var bcc = BCC.Get(context); var subject = Subject.Get(context); string body = (Body != null ?Body.Get(context) : null); string htmlbody = (HTMLBody != null ? HTMLBody.Get(context) : null); if (!string.IsNullOrEmpty(htmlbody)) { body = htmlbody; } var attachments = Attachments.Get(context); var uiaction = UIAction.Get(context); email.BodyFormat = Microsoft.Office.Interop.Outlook.OlBodyFormat.olFormatRichText; email.To = to; email.Subject = subject; email.HTMLBody = body; email.CC = cc; email.BCC = bcc; if (attachments != null && attachments.Count() > 0) { foreach (var attachment in attachments) { if (!string.IsNullOrEmpty(attachment)) { email.Attachments.Add(attachment, Microsoft.Office.Interop.Outlook.OlAttachmentType.olByValue, 100000, Type.Missing); } } } if (uiaction == "Show") { email.Display(true); } //else if(uiaction == "SendVisable") //{ // email.Display(true); // email.Send(); //} else { email.Send(); } if (EMail != null) { EMail.Set(context, new email(email)); } }