The demo represents the sorting capabilities of <strong>RadGridView</strong>. Three sorting
directions are supported: <b><em>Ascending</em></b>, <b><em>Descending</em></b>
and <b><em>None </em></b> (no sorting), which can be changed by clicking on the
column header text. 
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This example demonstrates how data can be sorted programmatically by:<br />
			<ul>
			<li>Using the <b>GridSortExpression</b> class that provides the sorting options for 
                <strong>RadGridView</strong></li>
                <li>Using the <b>SortExpressions</b> collection of the <b>GridTableView</b> class </li>
			<li>How to set the two different sorting modes - single or multi-column 
			sorting</li></ul>