ASP.NET Error when exporting report (Crystal Report to PDF) -

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i'm having error when want export crystal report pdf local machine.

enter image description here

based on understanding, says context null. how trace values from? in advance!

below code appear me problem.

response.write("<script>") response.write("window.open('" & resolveurl("~\report\rpthandler.ashx?p=user_id|date&v=" & user_id & "&t=0&n=porderprocessingcard.rpt&c=orcl_po") & "','_blank')") response.write("</script>")

the solution check on parameter , value passing to. example above, calling 2 parameters (user_id , date) while i'm passing 1 value it. therefore prompt such error. hope helps :)


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