public PersonController() : this(new PersonBLL()) { }
2 回答
繁花如伊
TA貢獻(xiàn)2012條經(jīng)驗(yàn) 獲得超12個贊
using System;
2 using System.Collections.Generic;
3 using System.Linq;
4 using System.Text;
5
6
namespace ConsoleApplication1
7
{
8
class Program
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{
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static void Main(string[] args)11
{12 PersonBLL p = new PersonBLL();
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PersonController pc = new PersonController(p); //初始化帶參構(gòu)造函數(shù)14
//輸出：初始化了帶參構(gòu)造函數(shù)15 Console.WriteLine("---------------------------------");16 PersonController pc1 = new PersonController();//初始化無參構(gòu)造函數(shù)17 //輸出：初始化了帶參構(gòu)造函數(shù)18 // 初始化了無參構(gòu)造函數(shù)19 }20 }21 22 public class PersonController23 {24 private PersonBLL personBLL;25 26 public PersonController(PersonBLL p)27 {28 this.personBLL = p;29 Console.WriteLine("初始化了帶參構(gòu)造函數(shù)");30 }31 32 public PersonController()33 : this(new PersonBLL())34 {35 Console.WriteLine("初始化了無參構(gòu)造函數(shù)");36 }37 }38 39 public class PersonBLL40 {41 }42 }在調(diào)用無慘構(gòu)造函數(shù)的時候，會先初始化帶參構(gòu)造函數(shù)，再明白了吧
眼眸繁星
TA貢獻(xiàn)1873條經(jīng)驗(yàn) 獲得超9個贊
PersonController類里面有一個構(gòu)造函數(shù) public PersonController(PersonBLL p)
直接調(diào)用該構(gòu)造函數(shù)初始化了public PersonController()
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