static void Main(string[] args)
{
DisArea dis = new DisArea(5);
ISquare sq = (ISquare)dis; //强制类型转换
ICircle ci = (ICircle)dis; //强制类型转换
Console.WriteLine("正方形的面积是:" + sq.Area()); //显式接口成员只能通过接口实例访问
Console.WriteLine("圆形的面积是:" + ci.Area());
Console.ReadKey();
}
public IActionResult Index()
{
var circle = new CircleDTO
{
Radius = _circle.Radius,
Area = _circle.Area(),
Perimeter = _circle.Perimeter()
};
return(View(circle));
}