How to download multiple file Simultaneously without Zip on button click in asp.net using c#?consider files are in local folder.

I solved this problem by using javascript which opens serveral links to a download script.

sub Download
response.write("<script language='javascript'>")
response.write("newwindow('download.aspx?action=filename1');")
response.write("newwindow('download.aspx?action=filename2');")
response.write("</script>")
end sub

You could also add session-variables:
session("file-content1")=strContent1
session("file-content2")=strContent2

download: response.write(session("file-content1").tostring)

This is just useable if the target system has no poup blocker or something.
There is also a solution using iFrames (search).
Actually I'm using ZIP files most the time.

regards,
Andi