Detect if .NET Framework is installed, run installation if it isn't RRS feed

  • Question

  • I have an existing project running under .NET 4.

    I am looking for a way to install .NET Framework 4 if it isn't installed.

    With the extracted files from the standard installation, I can run setup.exe /passive to do the installation automatically, or just quit if it's already installed.

    The issue is calling the installer, then wait for it to complete before running the project that requires it.

    Obviously I can't do this using a previous version of .NET.  My application is for Windows 7 or 8 only.

    On 7, the original installation of Windows contains only up to .NET 3.5, while Windows 8 doesn't contain 3.5.  So if I compile a loader under 2.0, it still wants 3.5 in order to run under Windows 8.

    I tried a VB script, but it complains that it can't wait for the .NET framework installation to complete.

    I also considered PowerShell, but that isn't part of Windows 7.

    VB Script code follows..

    dim dir
    dim prog
    dim args
    Set objArgs = WScript.Arguments
    args = ""
    For Each strArg in objArgs
        args = args & " " & strArg
    set objShell = WScript.CreateObject ("WScript.Shell")
    dir = objShell.CurrentDirectory
    prog = dir & "\Net\Setup.exe /passive"
    Run prog, true
    prog = dir & "\Setup.exe " & args
    Run prog, false
    Sub Run(ByVal sFile, ByVal wait)
    Dim shell
        Set shell = CreateObject("WScript.Shell")
        shell.Run sFile, 1, wait
        Set shell = Nothing
    End Sub


    Sunday, August 19, 2012 6:17 PM


  • I switched to c++, and it works there.
    • Marked as answer by LLAndyW Tuesday, August 21, 2012 2:57 AM
    Tuesday, August 21, 2012 2:56 AM