UAC, Vista and C# - Programatically requesting elevation

Question

I have a program that only requires elevation to Admin on very rare occasions so I do not want to set-up my manifest to require permanent elevation.

How can I Programatically request elevation only when I need it?

I am using C# Thanks

Answer 1

WindowsPrincipal pricipal = new WindowsPrincipal(WindowsIdentity.GetCurrent());
    bool hasAdministrativeRight = pricipal.IsInRole(WindowsBuiltInRole.Administrator);

    if (!hasAdministrativeRight)
    {
        RunElevated(Application.ExecutablePath);
        this.Close();
        Application.Exit();
    }

private static void RunElevated(string fileName)
{
    //MessageBox.Show("Run: " + fileName);
    ProcessStartInfo processInfo = new ProcessStartInfo();
    processInfo.Verb = "runas";
    processInfo.FileName = fileName;
    try
    {
        Process.Start(processInfo);
    }
    catch (Win32Exception)
    {
        //Do nothing. Probably the user canceled the UAC window
    }
}