VB.NET open and print an excel file -

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i developing simple vb.net desktop app little printing business. has main winform, buttons opening jpg/pdf/word/excel files, open associated program, print file, capture spool job, , charge user being printed, based on printer name, number of pages, size of pages , cost per page. no big deal. hosts machines have win7 os.

when user wants print xls file, want app open excel 2010, opening file selected file dialog. , when excel opens, go directly print dialog, when job finishes load in spool, capture event , kill excel process.

my problem is:

i cant open excel directly going print dialog. excel respond "print" verb. prints default printer. want open , go print dialog. not want print default printer, need allow user select desired printer, pages, copies, etc.

i'm trying following code:

   dim openfiledialog1 new openfiledialog()    dim filepath string = ""    dim startinfo processstartinfo      'openfiledialog1.initialdirectory = "c:\"     openfiledialog1.filter = "xls files (*.xls)|*.xls|xlsx files (*.xlsx)|*.xlsx|all files (*.*)|*.*"     openfiledialog1.filterindex = 1     openfiledialog1.restoredirectory = true      if (dialogresult.ok) = openfiledialog1.showdialog(me)         filepath = openfiledialog1.filename     else         exit sub     end if      startinfo = new processstartinfo(rutaarchivo)      startinfo             .filename = filepath                  .windowstyle = processwindowstyle.normal              .verb = "print"             .createnowindow = false             .useshellexecute = true      end      try         system.diagnostics.process.start(startinfo)      catch ex exception         msgbox(ex.tostring)      end try

ide sharpdevelop 4.3. framework .net 4.0 client profile. os win7.

many :)

ms excel has following command line switches: excel switches

to want, might excel interop


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