zip - vb.net Download file and unzip it -

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i want download file .zip in vb, , decompress when download have reached 100%, here code download file:

wc.downloadfileasync(new uri(http://google.zip), "c:\documents , settings\all users\documents\google.zip")         sw.start()

what need add decompress google.zip when download have reached 100%?

dim saveas string="c:\documents , settings\all users\documents\google.zip"             dim theresponse httpwebresponse             dim therequest httpwebrequest             try 'checks if file exist                 therequest = webrequest.create(fileurl) 'fileurl zip url                 theresponse = therequest.getresponse             catch ex exception             'could not found on server (network delay maybe)             exit sub 'exit sub or function, because if not found can't downloaded             end try             dim length long = theresponse.contentlength             dim writestream new io.filestream(saveas, io.filemode.create)             dim nread integer                             dim readbytes(4095) byte                 dim bytesread integer = theresponse.getresponsestream.read(readbytes, 0, 4096)                 nread += bytesread                 if bytesread = 0 exit                 writestream.write(readbytes, 0, bytesread)             loop             theresponse.getresponsestream.close()             writestream.close()             'file downloaded 100%

unzipping file simple-> https://msdn.microsoft.com/en-us/library/ms404280%28v=vs.110%29.aspx


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