IO Stream in ReadKey() in my program taken keys from key bord but SHIFT ALT CONTROL Not taken whenever press the these three

do
{
    Keypress = Console.ReadKey();
    Console.WriteLine("  Your Key is : " + Keypress.KeyChar);

    if ((ConsoleModifiers.Alt & Keypress.Modifiers) != 0)         
        Console.WriteLine(" Alt Key pressed: ");
                
    if ((ConsoleModifiers.Control & Keypress.Modifiers) != 0)
        Console.WriteLine(" Control Key pressed:");

    if ((ConsoleModifiers.Shift & Keypress.Modifiers) != 0)
        Console.WriteLine(" shift key pressed:");
}
while (Keypress.KeyChar != 'Q');