title: Get Folder from Outlook using C# & GetFolderFromID EntryIdStore
body: <p>I'm trying to get a specific folder in outlook with c#.  Someone else had the same issue here <a href="https://stackoverflow.com/questions/76964/using-outlook-api-to-get-to-a-specific-folder">Using Outlook API to get to a specific folder</a> but when using the Folders collection I'm not sure how to get through the folders collection.  I mean, I've looked at the type of object that the Folders collection returns and it looks like it's a Folders object.  But when I try to use that in a loop it gives me an invalid cast exception.  I also hoped I could use the GetFolderFromID method to give it the string name of the folder but that doesn't want to work either... but I also can't find an example of how to use it so I'm not sure I'm coding it correctly.  Here's an example of what I tried.  Anyone know how to get the Processed folder which is on the same level as the Inbox folder?  Thanks.</p>
  
  <pre><code>        MAPIFolder oProcessed = null;
          foreach (var folder in oNS.Folders)
              if (folder.ToString() == "Processed")
              {
                  oProcessed = (MAPIFolder)folder;
              }
  
          if (oProcessed == null)
              throw new Exception("Missing processed folder.");
  </code></pre>