title: Getting the filter control in a RadGrid
body: <p>I'm trying to databind a combobox for a filter on a <code>radgrid</code>. I can't seem to be able to find the filter control when i try the following, nothing happens. </p>
  
  <pre><code>foreach (GridFilteringItem filterItem in InitAlerts.MasterTableView.GetItems(GridItemType.FilteringItem))
  {
      RadComboBox initLoans = (RadComboBox)filterItem.FindControl("InitLoan");
  
      var loannumber = (from DataRow dRow in initTable.Rows
                          select new { loan_number = dRow["loan_loan_number"] }).Distinct().ToList(); 
  
      initLoans.DataSource = loannumber;
      initLoans.DataBind();
      Label1.Text = initLoans.ID.ToString();
  }
  </code></pre>
  
  <p>Also, this is just running in <code>Page_Load</code>, if that makes a difference...</p>