1 //在创建类的时候对其属性进行初始化 2 class Polygon 3     { 4         public int NumSides { get; set; } 5         public double SideLength { get; set; } 6         public Polygon() 7         { 8             this.NumSides = 4; 9             this.SideLength = 10.0;10         }11 }12 //在创建对象时使用对象初始化器13 static void DoWork()14         {15             // to do16             Polygon square = new Polygon();17             Polygon triangle = new Polygon { NumSides = 3 };18             Polygon pentagon = new Polygon { SideLength = 15.5, NumSides = 5 };19             Console.WriteLine("Square: number of sides is {0},length of each side is {1}",square.NumSides,square.SideLength);20             Console.WriteLine("triangle: number of sides is {0},length of each side is {1}", triangle.NumSides, triangle.SideLength);21             Console.WriteLine("pentagon: number of sides is {0},length of each side is {1}", pentagon.NumSides, pentagon.SideLength);22         }23 24         static void Main(string[] args)25         {26             try27             {28                 DoWork();29             }30             catch (Exception ex)31             {32                 Console.WriteLine(ex.Message);33             }34         }