enkelmedia/Newsletter Studio - Attach file.cs

## Newsletter Studio - Attach file.cs
public class AttachmentRendertask : Services.RenderTasks.RenderTask
    {
        string _attachmentPath = String.Empty;

        public override void ProcessPreRender(RenderResult renderResult, RenderTaskParameters parameters)
        {
            // This method is executed when the scheduled jobs web request is still running. This means that the UmbracoContext, ApplicationContext etc can still be used.

            // Let's save the path to the attachment media file here.

            // Check if this newsletter is connected to a content node (if the ContenNodeId-property has a value the letter is created from that node in the content section).
            if (parameters.Newsletter.ContentNodeId.HasValue && parameters.Newsletter.ContentNodeId.Value > 0)
            {
                // Get this node as a IPublishedContent-object
                var helper = new UmbracoHelper(UmbracoContext.Current);
                var node = helper.TypedContent(parameters.Newsletter.ContentNodeId);

                // Check that there is an attachment-property defined (this could be any name of the property, attachement is just an example).
                if (!node.HasProperty("attachment") || node.GetPropertyValue<int>("attachment") <= 0)
                    return;

                var attachmentMediaId = node.GetPropertyValue<int>("attachment");

                var property = helper.TypedMedia(attachmentMediaId);

                _attachmentPath = HttpContext.Current.Server.MapPath(property.GetPropertyValue<string>("umbracoFile"));

            }

        }

        public override void ProcessUniqueItem(RenderResult renderResult, RenderTaskUniqueItemParameters parameters)
        {
            if (!string.IsNullOrEmpty(_attachmentPath))
            {
                // add new attachment to the e-mail;
                parameters.MailMessage.Attachments.Add(new Attachment(_attachmentPath));
            }
        }

    }