我有以下代码：
using System;
namespace Laboratory_work
{
public delegate void Delegate ();
public interface Method1
{
string InformationOutput (Person obj);
int WorkOffer();
}
public interface Method2
{
int Invitation();
}
public abstract class Person: Method1
{
public string Name{get; set;}
public string Surname{get; set;}
public int Age{get; set;}
public virtual string InformationOutput(Person obj)
{
string info="Some personal information \n_________________________\n\n"+
"Full name — "+Name+" "+Surname+
"\nAge — "+Age+" years\n";
return info;
}
public int WorkOffer()
{
if (Age>=18)
{
Console.WriteLine("\nYou may be offered a job.");
return 1;
}
else
{
Console.WriteLine("\nUnfortunately, there is no job for you.");
return 0;
}
}
}
public class WhiteCollarWorker: Person, Method1
{
public string Occupation{get; set;}
public bool ComputerAvailable{get; set;}
public override string InformationOutput(Person obj)
{
return base.InformationOutput(obj)+"Occupation — "+Occupation+"\n"+
"Computer — "+ComputerAvailable+"\n";
}
public int WorkOffer()
{
if (Age>=21 && Occupation!="\0")
{
Console.WriteLine("\nYou may be offered a job.");
return 1;
}
else
{
Console.WriteLine("\nUnfortunately, there is no job for you.");
return 0;
}
}
}
public class Laborer: Person, Method1
{
public string Occupation{get; set;}
public bool InstrumentsAvailable{get; set;}
public override string InformationOutput(Person obj)
{
return base.InformationOutput(obj)+"Occupation — "+Occupation+"\n"+
"Instruments — "+InstrumentsAvailable+"\n";
}
public int WorkOffer()
{
if (Age>=18 && Occupation!="\0")
{
Console.WriteLine("\nYou may be offered a job.");
return 1;
}
else
{
Console.WriteLine("\nUnfortunately, there is no job for you.");
return 0;
}
}
}
public class Engineer: WhiteCollarWorker, Method1, Method2
{
public int YearExperience{get; set;}
public bool BachelorDegree{get; set;}
public bool MasterDegree{get; set;}
public override string InformationOutput(Person obj)
{
return base.InformationOutput(obj)+"Experience — "+YearExperience+" year(s)\n"+
"Bachelor Degree — "+BachelorDegree+"\n"+
"Master Degree — "+MasterDegree+"\n";
}
public int WorkOffer()
{
if (Age>=25 && YearExperience>=1 && BachelorDegree==true)
{
Console.WriteLine("\nYou may be offered a job.");
return 1;
}
else
{
Console.WriteLine("\nUnfortunately, there is no job for you.");
return 0;
}
}
public int Invitation()
{
if(WorkOffer()==1)
{
Console.WriteLine("Dear "+Name+" "+Surname+", soon you will receive\n"+
"an email with date and time of your interview\n"+
"at out company.Thank you for your CV.");
return 1;
}
else
{
Console.WriteLine("Dear "+Name+" "+Surname+", unfortunately, you are\n"+
"not suitable for this position. Than you for your CV.\n");
return 0;
}
}
}
public class Builder: Laborer, Method1, Method2
{
public int YearExperience {get; set;}
public bool Education {get; set;}
public override string InformationOutput(Person obj)
{
return base.InformationOutput(obj)+"Experience — "+YearExperience+" year(s)\n"+
"Education — "+Education+"\n";
}
public int WorkOffer()
{
if (Age>=18 && (YearExperience>=1 || Education==true))
{
Console.WriteLine("\nYou may be offered a job.");
return 1;
}
else
{
Console.WriteLine("\nUnfortunately, there is no job for you.");
return 0;
}
}
public int Invitation()
{
if(WorkOffer()==1)
{
Console.WriteLine("Dear "+Name+" "+Surname+", soon you will receive\n"+
"an email with date and time of your interview\n"+
"at out company.Thank you for your CV.");
return 1;
}
else
{
Console.WriteLine("Dear "+Name+" "+Surname+", unfortunately, you are\n"+
"not suitable for this position. Than you for your CV.\n");
return 0;
}
}
}
class Program
{
public static void Main()
{
Delegate Del_1=new Delegate(WorkOffer);
Delegate Del_2=new Delegate(Invitation);
Delegate TwoDels=new Delegate(Del_1+Del_2);
const int N=10;
int Count=0;
var persons1=new Engineer[N];
for (int i=0; i<10; i++)
{
persons1[i] = new Engineer();
Console.WriteLine("\n\nENGINEERS\n________\n");
Console.WriteLine("Input information of a person");
Console.Write("Name: ");
persons1[i].Name=Console.ReadLine();
Console.Write("Surname: ");
persons1[i].Surname=Console.ReadLine();
Console.Write("Age: ");
persons1[i].Age=int.Parse(Console.ReadLine());
Console.Write("Occupation: ");
persons1[i].Occupation=Console.ReadLine();
Console.Write("Computer (true or false): ");
persons1[i].ComputerAvailable=bool.Parse(Console.ReadLine());
Console.Write("Experience (in years): ");
persons1[i].YearExperience=int.Parse(Console.ReadLine());
Console.Write("Bachelor Degree (true or false): ");
persons1[i].BachelorDegree=bool.Parse(Console.ReadLine());
Console.Write("Master Degree (true or false): ");
persons1[i].MasterDegree=bool.Parse(Console.ReadLine());
Count++;
Console.WriteLine("Do you want to continue? (Print 'OK' or 'NO'.)");
string answer;
answer=Console.ReadLine();
if (answer=="OK"||answer=="ok") continue;
else break;
}
for(int i=0; i<Count;i++)
{
Console.WriteLine("\n\n#"+(i+1));
Console.WriteLine(persons1[i].InformationOutput(persons1[i]));
}
Count=0;
var persons2=new Builder[N];
for (int i=0; i<10; i++)
{
persons2[i] = new Builder();
Console.WriteLine("\n\nBUILDERS\n________\n");
Console.WriteLine("Input information of a person");
Console.Write("Name: ");
persons2[i].Name=Console.ReadLine();
Console.Write("Surname: ");
persons2[i].Surname=Console.ReadLine();
Console.Write("Age: ");
persons2[i].Age=int.Parse(Console.ReadLine());
Console.Write("Occupation: ");
persons2[i].Occupation=Console.ReadLine();
Console.Write("Instruments (true or false): ");
persons2[i].InstrumentsAvailable=bool.Parse(Console.ReadLine());
Console.Write("Experience (in years): ");
persons2[i].YearExperience=int.Parse(Console.ReadLine());
Console.Write("Education (true or false): ");
persons2[i].Education=bool.Parse(Console.ReadLine());
Count++;
Console.WriteLine("Do you want to continue? (Print 'OK' or 'NO'.)");
string answer;
answer=Console.ReadLine();
if (answer=="OK"||answer=="ok") continue;
else break;
}
for(int i=0; i<Count;i++)
{
Console.WriteLine("\n\n#"+(i+1));
Console.WriteLine(persons2[i].InformationOutput(persons2[i]));
}
Console.WriteLine("\nPress any key to continue . . .");
Console.ReadKey(true);
}
}
}
它很松散，所以我想把注意力集中在第176-178行：
Delegate Del_1=new Delegate(WorkOffer);
Delegate Del_2=new Delegate(Invitation);
Delegate TwoDels=new Delegate(Del_1+Del_2);
在这里，我正在尝试创建Delegate的示例，导致出错。编译器显示错误“当前上下文中不存在名称'WorkOffer'”和“当前上下文中不存在名称'邀请'”。 我认为这都是因为我尝试在声明这些方法的类中使用它们，但是我应该怎样做才能在我的程序中使用连接到这些方法的委托？我需要一些建议。