public int Compare(object?x, object?y)
{
GeometricObject geo1 = x as GeometricObject;
GeometricObject geo2 = y as GeometricObject;
if (geo1 != null && geo2 != null)
{
return(Bigger(geo1, geo2));
}
else
{
throw new InvalidCastException();
}
}
public static int Bigger(GeometricObject x, GeometricObject y)
{
if (x.GetValue() > y.GetValue())
{
return(1);
}
else if (x.GetValue() < y.GetValue())
{
return(-1);
}
else
{
return(0);
}
}
static void Main(string[] args)
{
GeometricObject[] arr = new GeometricObject[3];
arr[0] = new GeometricObject("hallo");
arr[1] = new Circle("hh");
arr[2] = new Rectangle("ffff");
foreach (GeometricObject geo in arr)
{
geo.Start();
}
Console.WriteLine("------------------------------");
//GeometricObjectCompare a = new GeometricObjectCompare();
//Array.Sort(arr, a);
Array.Sort(arr, new GeometricObjectCompare());
foreach (GeometricObject geo in arr)
{
geo.Start();
}
}