C# SendKeys loop stuck oluyor

while(true){
    if(IsKeyPushedDown(Keys.F6))
        SendKeys.SendWait("LEAVEMEALONE");
}

[DllImport("user32.dll")]
static extern short GetAsyncKeyState(System.Windows.Forms.Keys vKey);

if(GetAsyncKeyState(Keys.F6) < 0) // Basılı Tutarken
{
// Artık ne yapacaksan

}