This example demonstrates how to use GroupByExpressions in <strong>RadGridView</strong> to:<br/>
	<ul>
	<li>Create group-by expressions, testing expressions syntax:<br />
        <b>fieldname[ alias]|aggregate(fieldname)[ alias][, ...] 
			Group By fieldname[ sort][, ...]
			<br/>
			&nbsp;&nbsp;&nbsp; </b>Where: <b>
			<br/>
			&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; fieldname</b>: name of any 
		field from the DataSource <b>
			<br/>
			&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; alias</b>: alias string. 
		This cannot contain blanks or other reserved symbols like ',', '.' etc. <b>
			<br/>
			&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; aggregate</b>: any of - <em>min, 
			max, sum, count, last, first</em> etc (the same as in GridAggregateFunction 
		enumeration) <b>
			<br/>
			&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; sort</b>: acs or desc - the 
		sort order of the grouped items
		<br/>
		<b>&nbsp;&nbsp;&nbsp; <i>Example</i></b>: <b>Country, City, 
			count(Country) Items, ContactName Group By Country, City desc</b>
	&nbsp; 
        <br />
        &nbsp;</li><li>Display additional information in each group header - like aggregate fields</li>
	<li>Dynamically add a "SubTotal" to each group, handling grid's grouping events</li></ul>