title: DataTable Select() with Guids
body: <p>I am trying to boild my treeview at runtime from a DataTable that is returned from a LINQ query.  The Fields returned are:</p>
  
  <p>NAME = CaseNoteID | ContactDate | ParentNote
  TYPE = Guid       | DateTime    | Guid</p>
  
  <p>The ParentNote field matches a entry in the CaseNoteID column.  The Select(filter) is giving me a runtime error of <strong><em>Cannot find column [ea8428e4].</em></strong> That alphanumeric is the first section of one of the Guids.  When I step thru my code filter = <code>"ParentNote=ea8428e4-1274-42e8-a31c-f57dc2f189a4"</code> </p>
  
  <p>What am I missing?</p>
  
  <pre><code>var tmpCNoteID = dr["CaseNoteID"].ToString();
                  var filter = "ParentNote="+tmpCNoteID;
  
                  DataRow[] childRows = cNoteDT.Select(filter);
  </code></pre>