Event handler code to add incoming emails with subject “Discussion [ID]” as replies

Here the users will send emails with subject “DiscussionTitle [Discussion ID]” format. If there is a discussion thread present with specified “[Discussion ID]” then it will add the incoming email as a reply in that thread. If ID is not supplied and if there is no discussion thread present with “DiscussionTitle” then it will create a new discussion but if there is any discussion already available then it will ignore that incoming mail.

    1:  public override void EmailReceived(SPList list, Microsoft.SharePoint.Utilities.SPEmailMessage emailMessage, string receiverData)

    2:              {

    3:              base.EmailReceived(list, emailMessage, receiverData);

    4:              bool flag = false;

    5:              int id = -1;

    6:              string subject = emailMessage.Headers["Subject"].ToString();

    7:              SPUser ous = list.ParentWeb.AllUsers.GetByEmail(emailMessage.Sender);

    8:              SPListItemCollection viewColl = list.GetItems(list.Views["Subject"]);

    9:              foreach (SPListItem item1 in viewColl)

   10:              {

   11:                  SPListItem item2 = list.GetItemById(item1.ID);

   12:                  if ((item2["Subject"].Equals(subject.Substring(subject.IndexOf(":") + 2))) || (item2["Subject"].Equals(subject)))

   13:                  {

   14:                      flag = true;

   15:                      break;

   16:                  }

   17:              }

   18:   

   19:              if (subject.IndexOf("-[") >= 0)

   20:              {

   21:                  //if ((item2["Subject"].Equals(subject.Substring(subject.IndexOf(":") + 2, subject.IndexOf("-["))))

   22:   //|| (item2["Subject"].Equals(subject.Substring(0, subject.IndexOf("-[")))))

   23:                  {

   24:                      id = Convert.ToInt32(subject.Substring(subject.IndexOf("[") + 1, (subject.IndexOf("]") - subject.IndexOf("[") - 1)));

   25:                      SPListItem item2 = list.GetItemById(id);

   26:   

   27:                      SPListItem disc = SPUtility.CreateNewDiscussionReply(item2);

   28:                      disc["Body"] = emailMessage.HtmlBody;

   29:                      disc["TrimmedBody"] = emailMessage.HtmlBody;

   30:                      disc["Editor"] = ous;

   31:                      disc["Author"] = ous;

   32:                      disc["E-Mail Subject"] = emailMessage.Headers["Subject"].ToString();

   33:                      disc.Update();

   34:                      flag = true;

   35:                  }

   36:              }

   37:   

   38:              if (!flag)

   39:              {

   40:                  SPListItem disc = SPUtility.CreateNewDiscussion(list.Items, emailMessage.Headers["Subject"].ToString());

   41:                  disc["Body"] = emailMessage.HtmlBody;

   42:                  disc["TrimmedBody"] = emailMessage.HtmlBody;

   43:                  disc["Editor"] = ous;

   44:                  disc["Author"] = ous;

   45:                  disc["E-Mail Subject"] = emailMessage.Headers["Subject"].ToString();

   46:                  disc.Update();

   47:              }

   48:          }

   49:   

:: Please note that I would have just uploaded my initial code and you might want to consider proper optimization of the code and disposal of objects properly. I might not have updated the latest code here.