How to download multiple files as zip in vb.net. Lost my extension while downloading in firefox -


i downloading multiple files zip file in vb.net. of browsers doesn't add zip file.

my code is:

if not ispostback         if not session("x") = nothing             dim x string = session("x").tostring             dim path() string             path = x.split("|"c)             using zip new zipfile()                 zip.alternateencoding = encoding.utf8                 zip.alternateencodingusage = zipoption.asnecessary                 = 0 ubound(path)                     if len(path(i)) > 0                         dim filepath string = trim(path(i))                         zip.addfile(filepath)                     end if                 next                 response.clear()                 response.bufferoutput = false                 dim zipname string = [string].format _                  ("datas_{0}.zip", datetime.now.tostring("dd-mmm-yyyy"))                 response.contenttype = "application /zip"                 response.addheader("content-disposition", "attachment;filename=" + zipname + "")                 zip.save(response.outputstream)                  httpcontext.current.applicationinstance.completerequest()                  response.flush()                 session.removeall()                 session.clear()                 session.abandon()              end using         else             response.redirect("frmuser.aspx")         end if     end if

my files downloading zip file in chrome , ie in firefox downloading xml files , downloading without extension. dono whats actual problem is?


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