1 namespace StructAndClass 2 { 3     internal class PointClass 4     { 5         public PointClass(int x, int y) 6         { 7             X = x; 8             Y = y; 9         }10 11         public int X { get; set; }12 13         public int Y { get; set; }14     }15 }

 1 namespace StructAndClass 2 { 3     internal struct PointStruct 4     { 5         public int X { get; set; } 6  7         public int Y { get; set; } 8  9         public PointStruct(int x, int y)10         {11             X = x;12             Y = y;13         }14     }15 }

 1 using System; 2  3 namespace StructAndClass 4 { 5     internal class Program 6     { 7         private static void Main(string[] args) 8         { 9             Console.WriteLine("PointStruct =====");10             var pStruct = new PointStruct(10, 10);11             Console.WriteLine("初始值：x={0}，y={1}", pStruct.X, pStruct.Y);12             ModifyPointStruct(pStruct);13             Console.WriteLine("調用 ModifyPointStruct() 后的值：x={0}，y={1}", pStruct.X, pStruct.Y);14             Console.WriteLine();15 16             Console.WriteLine("PointClass =====");17             var pClass = new PointClass(10, 10);18             Console.WriteLine("初始值：x={0}，y={1}", pClass.X, pClass.Y);19             ModifyPointClass(pClass);20             Console.WriteLine("調用 ModifyPointClass() 后的值：x={0}，y={1}", pClass.X, pClass.Y);21             Console.Read();22         }23 24         private static void ModifyPointStruct(PointStruct point)25         {26             Console.WriteLine("調用方法：ModifyPointStruct");27             point.X = 20;28             point.Y = 20;29             Console.WriteLine("修改成的值：x={0}, y={1}", point.X, point.Y);30         }31 32         private static void ModifyPointClass(PointClass point)33         {34             Console.WriteLine("調用方法：ModifyPointClass");35             point.X = 20;36             point.Y = 20;37             Console.WriteLine("修改成的值：x={0}, y={1}", point.X, point.Y);38         }39     }40 }