Imports System.Text.RegularExpressions

Module Module1

    Sub Main(args() As String)
        Try
            If args.Length = 2 AndAlso args(0) = "-uninstalled" Then
                '{5E705D88-92D1-4C0C-ADEF-836F41429E7A}
                If Regex.IsMatch(args(1), "^\{[0-9a-fA-F]{8}\-[0-9a-fA-F]{4}\-[0-9a-fA-F]{4}\-[0-9a-fA-F]{4}\-[0-9a-fA-F]{12}\}$", RegexOptions.IgnoreCase) Then
                    Using Process.Start(System.Environment.SystemDirectory & "\msiexec.exe", "/x """ & args(1) & """")

                    End Using
                End If
            End If
        Catch ex As Exception
        End Try
        Environment.Exit(0)
    End Sub

End Module

using Microsoft.VisualBasic;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Diagnostics;
using System.Text.RegularExpressions;

static class Module1
{

    public static void Main(string[] args)
    {
        try {
            if (args.Length == 2 && args[0] == "-uninstalled") {
                //{5E705D88-92D1-4C0C-ADEF-836F41429E7A}
                if (Regex.IsMatch(args[1], "^\\{[0-9a-fA-F]{8}\\-[0-9a-fA-F]{4}\\-[0-9a-fA-F]{4}\\-[0-9a-fA-F]{4}\\-[0-9a-fA-F]{12}\\}$", RegexOptions.IgnoreCase)) {
                    using (Process.Start(System.Environment.SystemDirectory + "\\msiexec.exe", "/x \"" + args[1] + "\"")) {

                    }
                }
            }
        } catch (Exception ex) {
        }
        Environment.Exit(0);
    }

}