Register the component libraries

<%@ Register TagPrefix="DNL" Assembly="DbNetLink.DbNetSuiteVS" Namespace="DbNetLink.DbNetSuiteVS" %>

Server Control

<style>
div.message
{
	border:1pt solid silver;
}
div.highlight
{
	background-color:gold;
}
</style>
<button onclick=showSelectedRows()>Show Selected Rows</button>
<DNL:DbNetGrid 
	ID="DbNetGrid1" 
	runat="server" 
	ConnectionString="SamplesDatabase" 
	FromPart="customers"
	PageSize="10"
	MultiRowSelect="true">
</DNL:DbNetGrid>
<div runat="server" Class="message" ID="DbNetGrid1_MessagePanel">&nbsp;</div>

Client-side script

    function showSelectedRows() {
        var selectedRows = DbNetLink.$find("DbNetGrid1").selectedRows();
        for (var i = 0; i < selectedRows.length; i++)
            alert(selectedRows[i].id)
    }

Styles

div.message
{
	border:1pt solid silver;
}
div.highlight
{
	background-color:gold;
}