title: Hierarchical Rad Grid Troubles
body: <p>I'm not sure if anyone else has had trouble with this.  I'm trying to use a RAD Grid to create a 4-level hierarchy to display to the user.  I followed the tutorial on <a href="http://demos.telerik.com/aspnet-ajax/grid/examples/hierarchy/declarativerelations/defaultcs.aspx" rel="nofollow noreferrer">this website</a>, and couldn't get it to work.  I know that there is data within the child select statements, but the second layer is always coming up empty.  I've checked my select statements against the database, and they're all correct.  I believe that the problem is where I'm populating my parameters for my datasources.  I've tried using the session method used in the tutorial, but that didn't work.  I saw another way of doing it by using just regular asp:Parameters, but that doesn't work either.  I think that the issue is with my parameter names because the tutorial puts a large emphasis on making sure they're named properly, but I don't see where it's incorrect.  Has anyone else had this issue before using a rad grid?</p>
  <p>Thanks for your help.</p>
  <p><strong>EDIT</strong></p>
  <p><code>DataKeyNames</code> for the <code>GridTableView</code> and their relational <code>MasterKeyField</code> in the <code>GridRelationField</code> are case sensitive...this caused the issue.</p>