@model IEnumerable<FlexGridData.Sale>

<h1>
    GroupPanel control
</h1>
<p>
    The <b>wijmo.grid.grouppanel</b> module provides a <b>GroupPanel</b>
    control that adds an Outlook-style grouping UI to the grid.
</p>
<p>
    To use the <b>GroupPanel</b> control, drag column headers into
    the panel to create the groups. You may also remove or change 
    the order of groups by dragging them to a new position. 
</p>
<div id="theGroupPanel"></div>
@Html.C1().FlexGrid().Id("theGrid").Bind(Model).Height(250)