ASpeak IOpine!

private static int Uninstall()
{
        Microsoft.Win32.RegistryKey Fregistry =
        Microsoft.Win32.Registry.LocalMachine.OpenSubKey("SOFTWARE")
        .OpenSubKey("Microsoft").OpenSubKey("Windows").OpenSubKey("CurrentVersion")
        .OpenSubKey("Installer").OpenSubKey("UserData")
        .OpenSubKey("S-1-5-18").OpenSubKey("Products");
        string[] Names = Fregistry.GetSubKeyNames();
        string uninstall = "";
        string ApplicationName = "My Custom Application";
        for (int i = 0; i < Names.Length; i++)
        {
            Microsoft.Win32.RegistryKey FTemp = Fregistry.OpenSubKey(Names[i]).OpenSubKey("InstallProperties");
            if (FTemp == null)
                continue;
            string appFound = (FTemp.GetValue("DisplayName") == null) ? String.Empty : FTemp.GetValue("DisplayName").ToString();
            if (!String.IsNullOrEmpty(appFound))
                System.Diagnostics.Trace.WriteLine("Found Software: " + appFound);
            if (String.Compare(appFound, ApplicationName, true) == 0)
            {
                String installedVersion = FTemp.GetValue("DisplayVersion").ToString();
                if (!installedVersion.StartsWith("3.1."))//can be removed if only one version is installed
                    continue;
                object obj = FTemp.GetValue("UninstallString");
                if (obj == null)
                    uninstall = "";
                else
                    uninstall = obj.ToString();
                i = Names.Length;
            }
        }
        if (String.IsNullOrEmpty(uninstall))
        {
            return -1;
        }
        System.Console.WriteLine(uninstall);
        System.Diagnostics.Process FProcess = new System.Diagnostics.Process();
        string temp = "/passive /x{" + uninstall.Split("/".ToCharArray())[1].Split("I{".ToCharArray())[2];
        FProcess.StartInfo.FileName = uninstall.Split("/".ToCharArray())[0];
        FProcess.StartInfo.Arguments = temp;
        FProcess.StartInfo.UseShellExecute = false;
        FProcess.Start();
        FProcess.WaitForExit();
        if (FProcess.ExitCode != 0)
            return -1;
        else
        {
            return 0;
        }
}