Install/uninstall MSI using VB.NET

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Since the Windows Installer Object Model does not work properly when used with .NET, I've found that the easiest way to control the installation, etc. of MSIs is to use the API provided in msi.dll.


    Const ERROR_SUCCESS = 0

    Declare Function MsiInstallProduct Lib "msi.dll" Alias "MsiInstallProductA"
(ByVal szPackagePath As String, ByVal szCommandLine As String) As Long

    Sub InstallMSI(ByVal remove As Boolean, ByVal MSIFile As String)
        Select Case remove
            Case True
                If MsiInstallProduct("MSIFileName", "REMOVE=ALL") =
            Case False
                If MsiInstallProduct("MSIFileName", "property1=value1 
property2=value2") = ERROR_SUCCESS Then MsgBox("OK")
        End Select
    End Sub

This was first published in April 2003

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