When setting the mail merge data source using the code below i am unable to see the field names in the "Insert merge field" drop down on the mail merge tool bar.
What am i missing to be able to set merge fields?
NDBMailMergeDataSource nDBMailMergeDataSource = new NDBMailMergeDataSource(Nevron.Nov.Data.ENDbConnectionType.SqlServer, "Data Source=w10Mike;Initial Catalog=Pats;Integrated Security=True", "SELECT Id, field1, field2 FROM tableone");

    
    this.RichTextView.Content.MailMerge.DataSource = nDBMailMergeDataSource;