StackOverflowException

private int stage
{
  get
  {
    return stage;
  }
  set
  {
    if (stage == 1)
    {
      hogergardin1.Margin = new Thickness(636, 516, 0, -306);
      venstergardin1.Margin = new Thickness(457, 516, 0, -94);
    }
    if (stage == 2)
    {
      hogergardin1.Margin = new Thickness(600, 516, 0, 0);
      venstergardin1.Margin = new Thickness(500, 516, 0, 0);
    }
    if (stage == 3)
    {
      hogergardin1.Margin = new Thickness(600, 516, 0, 306);
      venstergardin1.Margin = new Thickness(500, 516, 0, 94);
    }
  }
}