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How to: Send the Mail-Merge Document as an E-mail

  • 3 min to read

The following example describes how to send the mail merge result as an e-mail.

Refer to the Mail Merge topic for an example on how to create a mail-merge document. Follow the steps below to export the result as a Microsoft® Outlook® mail item.

Create an Exporter Class

  1. Add a reference to the Microsoft.Office.Interop.Outlook assembly.
  2. Create an exporter class that implements the IUriProvider interface. Declare the class constructor as follows:

    
    using DevExpress.Office.Services;
    using Outlook = Microsoft.Office.Interop.Outlook;
    
    public class RichEditMailMessageExporter : IUriProvider
    {
      readonly RichEditDocumentServer server;
      readonly Outlook.MailItem mailItem; 
    
      public RichEditMailMessageExporter(RichEditDocumentServer server, Outlook.MailItem mailItem)
     {
        Guard.ArgumentNotNull(server, "server");
        Guard.ArgumentNotNull(mailItem, "mailItem");
    
        this.server = richServer;
        this.mailItem = mailItem;
     }
    }
    
  3. Implement the Export method to retrieve the document text in HTML format and convert it into the message body. Subscribe to the RichEditDocumentServer.BeforeExport event.

    
    string tempFiles = Path.Combine(Directory.GetCurrentDirectory(), "TempFiles");
    
    public virtual void Export()
      {
         if (!Directory.Exists(tempFiles))
         Directory.CreateDirectory(tempFiles);
    
         server.BeforeExport += OnBeforeExport;
         string htmlBody = server.Document.GetHtmlText(server.Document.Range, this);
         server.BeforeExport -= OnBeforeExport;
    
         mailItem.BodyFormat = Outlook.OlBodyFormat.olFormatHTML;
         mailItem.HTMLBody = htmlBody;
       }
    
  4. Specify the HtmlDocumentExporterOptions.Encoding property in the BeforeExport event handler.

    
    private void OnBeforeExport(object sender, BeforeExportEventArgs e)
      {
         HtmlDocumentExporterOptions options = e.Options as HtmlDocumentExporterOptions;
         if (options != null)
         {
            options.Encoding = Encoding.UTF8;
         }
      }
    
  5. Implement the interface's IUriProvider.CreateCssUri and IUriProvider.CreateImageUri methods. In this example, the IUriProvider.CreateImageUri method retains the document images and attaches them to the mail message.

    
    int imageId;
    
    public string CreateCssUri(string rootUri, string styleText, string relativeUri)
    {
       return String.Empty;
    }
    
    public string CreateImageUri(string rootUri, OfficeImage image, string relativeUri)
    {
       string imageName = String.Format("image{0}.png", imageId);
       imageId++;
    
       string imagePath = Path.Combine(tempFiles, imageName);
    
       image.NativeImage.Save(imagePath, ImageFormat.Png);
    
       mailItem.Attachments.Add(imagePath, Outlook.OlAttachmentType.olByValue, 0, Type.Missing);
    
       return "cid:" + imageName;
    }
    

Send the result to the Microsoft® Outlook® application

Declare a new Outlook application object and create a new mail item in the main class. Create a new RichEditMailMessageExporter instance and pass the RichEditDocumentServer and the MailItem objects as parameters. Call the Export method.

Outlook.Application application = new Outlook.Application();
Outlook.MailItem mailItem = (Outlook.MailItem)application.CreateItem(Outlook.OlItemType.olMailItem);

RichEditMailMessageExporter exporter = new RichEditMailMessageExporter(richServer, mailItem);
exporter.Export();

mailItem.Display(false);          
Note

A full code example is available in the How to Export the Mail-Merge Document into an Outlook Mail Item repository on GitHub.