DataGrind URL Issue with ASP.Net

How in ASP.Net does one alter Current DataGrid Coding Below to create a URL
that allows for multiple parameters?

I need to Post Multiple URL Paramaters via a Single URL for example :
test.aspx?test= 1&Next=2

Where: test= Databind Result
Next= Paramater Passed from QueryString or Other Variable
Current Datagrid Coding

<ASP:DataGrid id="MyDataGrid " runat="server" Width="800"
BackColor="#ccc cff" BorderColor="bl ack" ShowFooter="fal se" CellPadding="3"
CellSpacing="0"
Font-Name="Verdana" Font-Size="8pt" HeaderStyle-BackColor="#aaa add"
DataKeyField="r ecipe_number">
<Columns>
<asp:HyperLinkC olumn
DataNavigateUrl Field="Test_num ber"
DataNavigateUrl FormatString="t est.aspx?num={0 }"
Text="Get Details" />
</Columns>
</ASP:DataGrid>