Using Concat Querystrings Based On Checkbox Selection?

May 5, 2010

i have a querystring like this : Comparison.aspx?id=4545&Product=foo&displaylevelname=128

it's being build by 3 hidden fields in a html tablerow based on checkbox selection.

but user can select multiple checkboxes (20) and afterwards

i need a querystring like this : Comparison.aspx?id=4545&Product=foo&displaylevelname=128;145;455;

So how do i go from :

Comparison.aspx?id=4545&Product=foo&displaylevelname=128

Comparison.aspx?id=4545&Product=foo&displaylevelname=145

Comparison.aspx?id=4545&Product=foo&displaylevelname=455

To Comparison.aspx?id=4545&Product=foo&displaylevelname=128;145;455;

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