.net - get duration of .mp4 file -

i making application in .net(vb) in display list of video files (.mp4). want show duration of each file well. couldn't find way how got duration of mp4 file. please provide , hint or guideline.

you can extract file attributes , duration of particular file.this function help:

function getduration(byval moviefullpath string) string    if file.exists(moviefullpath)       dim objshell object = createobject("shell.application")       dim objfolder object = _          objshell.namespace(path.getdirectoryname(moviefullpath))             each strfilename in objfolder.items                if strfilename.name = path.getfilename(moviefullpath)                   return objfolder.getdetailsof(strfilename, 21).tostring                   exit                   exit function                end if             next             return ""    else       return ""    end if end function 

and call function like

dim myduration string =  getduration("c:\somepath\somevideooraudiofile.avi") 

hope helps!!

updates:

in case of using different operating system xp,you should make small changed aboce code..

if using windows 7, change

dim myduration string = getduration("c:\somepath\somevideooraudiofile.avi")

to

return objfolder.getdetailsof(strfilename, 36).tostring.

for windows vista use return objfolder.getdetailsof(strfilename, 27).tostring