Search in Outlook

private void SearchInBox()
{
   Outlook.MAPIFolder inbox = this.ActiveExplorer().Session.
       GetDefaultFolder(Outlook.OlDefaultFolders.olFolderInbox);
   Outlook.Items items = inbox.Items;
   Outlook.MailItem mailItem = null;
   object folderItem;
   string subjectName = string.Empty;
   string filter = "[Subject] > 's' And [Subject] <'u'";
   folderItem = items.Find(filter);
   while (folderItem != null)
   {
       mailItem = folderItem as Outlook.MailItem;
       if (mailItem != null)
       {
           subjectName += "\n" + mailItem.Subject;
       }
       folderItem = items.FindNext();
   }
   subjectName = " The following e-mail messages were found: " +
       subjectName;
   MessageBox.Show(subjectName);
}