Add an uninstall start menu item to your .NET deployment project

[STAThread]
static void Main(string[] args)
{
	foreach (string arg in args)
	{
		if (arg.Split('=')[0] == "/u")
		{
			Process.Start(new ProcessStartInfo(Environment.GetFolderPath(Environment.SpecialFolder.System) + "\\msiexec.exe", "/x " + arg.Split('=')[1]));
			return;
		}
	}
	Application.EnableVisualStyles();
	Application.SetCompatibleTextRenderingDefault(false);
	Application.Run(new myForm());
}

        [STAThread]
        static void Main()
        {
            string[] args = Environment.GetCommandLineArgs();
            bool isRunnable = true;
            foreach (string argument in args)
            {
                if (argument.Split("=".ToCharArray(), StringSplitOptions.RemoveEmptyEntries)[0].ToLower() == "/u")
                {
                    string guid = argument.Split("=".ToCharArray(),StringSplitOptions.RemoveEmptyEntries)[1];
                    string path = Environment.GetFolderPath(Environment.SpecialFolder.System);
                    ProcessStartInfo si=new ProcessStartInfo(path+"\\msiexec.exe","/x "+guid);
                    Process.Start(si);
                    Application.Exit();
                    isRunnable = false;
                }
            }
            if (isRunnable)
            {
                Application.EnableVisualStyles();
                Application.SetCompatibleTextRenderingDefault(false);
                Application.Run(new myForm());
            }
        }

string[] ss = arg.Split("=".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
if (ss[0].ToLower() == "/u" && ss.Length == 2)
{
        if (MessageBox.Show("Whatever question you want?", "Whatever caption you want", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
        {
                string guid = ss[1];
                string path = Environment.GetFolderPath(Environment.SpecialFolder.System);
                ProcessStartInfo si = new ProcessStartInfo(path + "\\msiexec.exe", "/x " + guid + " /qb");
                Process.Start(si);
        }
        Application.Exit();
        return;
}

   Sub New() 'i wrote this sub

        Dim arguments As String() = Environment.GetCommandLineArgs()
        Dim argument As String
        For Each argument In arguments
            If argument.Split("=")(0).ToLower = "/u" Then
                Dim guid As String = argument.Split("=")(1)
                Dim path As String = _
                   Environment.GetFolderPath(Environment.SpecialFolder.System)
                Dim si As New ProcessStartInfo(path & _
                          " C:\Program Files\BSE 2008\Database\msiexec.exe", "/i " & guid)
                Process.Start(si)
                Close()
                Application.Exit()
                End
            End If
        Next
 
        ' This call is required by the Windows Form Designer.
        InitializeComponent()
 
        ' Add any initialization after the InitializeComponent() call.

    End Sub
 
    'NOTE: The following procedure is required by the Windows Form Designer
    'It can be modified using the Windows Form Designer.  
    'Do not modify it using the code editor.
    <system.diagnostics.debuggerstepthrough()> _
    Private Sub InitializeComponent()
       ......
    End Sub

Dim si As New ProcessStartInfo(path & _
    "\msiexec.exe", "/i " & guid)

Dim si As New ProcessStartInfo( _
    path & "\msiexec.exe", "/i " & guid)