C#继承小结-C++-编程技术-六狼论坛-IT论坛-计算机论坛

junmail 发表于 2013-1-27 05:24:38

C#继承小结

1、实例化父类时，可以使用new子类，执行构造函数顺序为：先执行父类构造函数，再执行子类构造函数。
2、实例化子类时，只可以new子类，执行顺序同上。
3、父类实例化后，只能执行父类的方法，获得父类的属性等。
4、实例化子类后，可同时执行子类和父类的方法和属性，如同名方法，则执行子类的方法。
附代码：
<div style="padding-right: 5.4pt; padding-left: 5.4pt; background: #e6e6e6; padding-bottom: 4px; width: 95%; padding-top: 4px;">http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gifusing System;
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gifusing System.Collections.Generic;
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gifusing System.Text;
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gifnamespace ClassLibrary1
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedBlock.gif...{
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif    public class Class1
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif    ...{
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockEnd.gif    }
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif    public class NetClass
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif    ...{
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif        static string s = "NetClassaaaaaa";
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif        static string c = "NetClassbbbbbb";
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif        public NetClass()
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif        ...{
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif            Console.WriteLine("NetClass:NetClass()");
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockEnd.gif        }
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif        public NetClass(string sNo1)
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif        ...{
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif            Console.WriteLine("NetClass:NetClass(sNo1)");
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockEnd.gif        }
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif        public NetClass(string sNo1, string sNo2)
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif        ...{
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif            Console.WriteLine("NetClass:NetClass(sNo1,sNo2)");
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockEnd.gif        }
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif        public string S
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif        ...{
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif            get
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif            ...{
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif                return s;
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockEnd.gif            }
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockEnd.gif        }
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif        public string C
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif        ...{
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif            get
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif            ...{
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif                return c;
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockEnd.gif            }
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockEnd.gif        }
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif        public string Emp()
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif        ...{
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif            return "NetClassEmp";
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockEnd.gif        }
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockEnd.gif    }
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif    public class NetClass2 : NetClass
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif    ...{
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif        static string s = "NetClass2-111111";
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif        static string c = "NetClass2-222222";
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif        public NetClass2()// : base("789")
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif        ...{
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif            Console.WriteLine("NetClass2:NetClass2()");
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockEnd.gif        }
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif        public NetClass2(string sNo1)//           : base(sNo1,"789")
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif        ...{
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif            Console.WriteLine("NetClass2:NetClass2(sNo1)");
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockEnd.gif        }
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif        public NetClass2(string sNo1, string sNo2) : this()
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif        ...{
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif            Console.WriteLine("NetClass2:NetClass2(sNo2)");
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockEnd.gif        }
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif        public string Ss
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif        ...{
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif            get
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif            ...{
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif                return s;
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockEnd.gif            }
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockEnd.gif        }
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif        public string Cc
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif        ...{
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif            get
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif            ...{
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif                return c;
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockEnd.gif            }
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockEnd.gif        }
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif        //public string C
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif        //{
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif        //    get
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif        //    {
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif        //        return c;
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif        //    }
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif        //}
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif        public string Emp()
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif        ...{
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif            return "NetClass2Emp";
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockEnd.gif        }
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockEnd.gif    }
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif    public class MainClass
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif    ...{
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif        public static void Main()
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif        ...{
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif            NetClass2 nt = new NetClass2("asdf");
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif            Console.WriteLine(nt.C);
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif            Console.WriteLine(nt.Cc);
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif            Console.WriteLine(nt.Emp());
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif            Console.ReadKey();
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockEnd.gif        }
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockEnd.gif    }
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedBlockEnd.gif}
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif

页: [1]

六狼论坛's Archiver

C#继承小结