[DllImport("msi.dll", CharSet = CharSet.Auto)]
public static extern int MsiGetFileVersion(
[MarshalAs(UnmanagedType.LPTStr)] string szFilePath,
[MarshalAs(UnmanagedType.LPTStr)] StringBuilder lpVersionBuf,
ref int pcchVersionBuf,
[MarshalAs(UnmanagedType.LPTStr)] StringBuilder lpLangBuf,
ref int pcchLangBuf
);