如何的屬性數組從另一個類C＃

Question

class Customer:PhoneNumber 
    { 
     //PhoneNumber p = new PhoneNumber(); 
     private string fname; 
     private string lname; 
     private string cname; 
     private string pnumber; 
     private string type; 
     private string anum; 
     private string phonenumber; 

     public PhoneNumber[] a ; 





     public string sFirstName 
     { 
      get 
      { 

       return fname; 

      } 
      set 
      { 
       fname = value; 
      } 


     } 
     public string sLastName 
     { 
      get 
      { 
       return lname; 
      } 
      set 
      { 
       lname = value; 
      } 

     } 
     public string sCompanyName 
     { 
      get 
      { 
       return cname; 
      } 
      set 
      { 
       cname = value; 
      } 


     } 




     public PhoneNumber[] p 
     { 
      get 
      { 
    ????????????????????? 
      How to do it here? 

      } 

     } 

     public Customer() 
     { 
      sFirstName = fname; 
      sLastName = lname; 
      sCompanyName = cname; 
      //phone = pnumber; 


     } 
     public Customer(string Fname,string Lname,string Cname) 
     { 
      sFirstName = Fname; 
      sLastName = Lname; 
      sCompanyName = Cname; 

     } 
     public Customer(string Fname, string Lname, string Cname,string phonenumber) 
     { 
      sFirstName = Fname; 
      sLastName = Lname; 
      sCompanyName = Cname; 

      AddPhoneNumber(phonenumber,"fds"); 



     } 
     public string AddPhoneNumber(string pnum1,string pnum2) 
     { 

      sPhoneNumber = pnum1; 
      if (pnum2 == null) 
      { 

       sPhoneType = "Home"; 
      } 
      else 
      { 

       sPhoneType = pnum2; ; 

      } 
      return sPhoneNumber + sPhoneType; 
     } 
     public override string ToString() 
     { 
      return string.Format("{0} {1},{2} ",sFirstName,sLastName,sCompanyName); 
     } 
     public void DisplayCustomer() 
     { 
      Console.WriteLine(ToString()); 


      foreach (var num in p) 
      { 

       Console.WriteLine(num); 
      } 
       //PhoneNumber ph = new PhoneNumber(sPhoneNumber,sPhoneType); 

       //Console.WriteLine(ph.ToString()); 
      } 


     } 
class PhoneNumber 
    { 

     public string sPNumber; 
     public string sPType; 
     public int count=0; 
     public string sPhoneNumber 
     { 
      get 
      { 
       return sPNumber; 
      } 
      set 
      { 
       //sPNumber = value; 
       bool check = VerifyPhoneNumber(value); 
       if (check == true) 
       { 
        sPNumber = value; 
       } 
       else 
       { 
        //Console.WriteLine("Wrong Number"); 
        //string m = "Default number is (000) 000‐0000"; 
        //m = value; 
        sPNumber = "Default number is (000) 000‐0000"; 
        //Console.WriteLine("Default number is (000) 000‐0000"); 


       } 
       count++; 
      } 


     } 

     public string sPhoneType 
     { 
      get 
      { 
       return sPType; 
      } 

      set 
      { 
       sPType = value; 
      } 

     } 

     public PhoneNumber() 
     { 
      sPNumber=""; 
      sPType=""; 
     } 
     public PhoneNumber(string pNumber) 
     { 
      this.sPhoneNumber = pNumber; 
     } 
     public PhoneNumber(string pNumber, string pType) 
     { 
      sPhoneNumber= pNumber; 
      sPhoneType = pType; 

     } 
     public bool VerifyPhoneNumber(string pnumber) 
     { 
      if (pnumber.Contains("0") || pnumber.Contains("1")|| pnumber.Contains("2") || pnumber .Contains("3") || pnumber .Contains("4")|| pnumber.Contains("5") || pnumber .Contains("6") || pnumber.Contains("7") || pnumber.Contains("8") || pnumber.Contains("9")) 
      { 

       return true; 
      } 
      else 
      { 
       return false; 
      } 



     } 
     public override string ToString() 
     { 
      return string.Format("{0}:{1}",sPhoneType,sPhoneNumber); 
     } 


    } 

Answer 1

您是否爲pArray指定了值？ 你必須指定如下，

pArray[0] = new PhoneNumber(); 
pArray[1] = new PhoneNumber(); 
pArray[2] = new PhoneNumber(); 

Answer 2

PhoneNumber p = new PhoneNumber(); 

上面p不是陣列。

PhoneNumber []pArray = new PhoneNumber[3]; 

public PhoneNumber[] p 
{ 
     get 
     { 
      //return value should be an array of PhoneNumber 
      return pArray; 
     } 
}