docs/csharp/programming-guide/classes-and-structs/snippets/properties/interfaces.cs - main - aprogrammer/dotnet-docs

docs/csharp/programming-guide/classes-and-structs/snippets/properties/interfaces.cs

101 строка2 KB

Bill Wagner

C# 11: required members (#30275)

29 июл 2022, 23:16

29 июл 2022, 23:16ee56cb9

using System;

namespace interfaces
{
    // <SnippetDeclareInterfaceProperties>
    public interface ISampleInterface
    {
        // Property declaration:
        string Name
        {
            get;
            set;
        }
    }
    // </SnippetDeclareInterfaceProperties>
    interface ICitizen
    {
        string Name
        {
            get;
            set;
        }
    }

    public class Employee2 : IEmployee, ICitizen
    {
        //<SnippetExplicitImplementation>
        string IEmployee.Name
        {
            get { return "Employee Name"; }
            set { }
        }
        //</SnippetExplicitImplementation>

        //<SnippetCitizenImplementation>
        string ICitizen.Name
        {
            get { return "Citizen Name"; }
            set { }
        }
        //</SnippetCitizenImplementation>

        public int Counter => 0;
    }

    //<SnippetPropertyExample>
    interface IEmployee
    {
        string Name
        {
            get;
            set;
        }

        int Counter
        {
            get;
        }
    }

    public class Employee : IEmployee
    {
        public static int numberOfEmployees;

        private string _name;
        public string Name  // read-write instance property
        {
            get => _name;
            set => _name = value;
        }

        private int _counter;
        public int Counter  // read-only instance property
        {
            get => _counter;
        }

        // constructor
        public Employee() => _counter = ++numberOfEmployees;
    }
    //</SnippetPropertyExample>

    public static class Properties
    {
        public static void Examples()
        {
            // <SnippetUseProperty>
            System.Console.Write("Enter number of employees: ");
            Employee.numberOfEmployees = int.Parse(System.Console.ReadLine());

            Employee e1 = new Employee();
            System.Console.Write("Enter the name of the new employee: ");
            e1.Name = System.Console.ReadLine();

            System.Console.WriteLine("The employee information:");
            System.Console.WriteLine("Employee number: {0}", e1.Counter);
            System.Console.WriteLine("Employee name: {0}", e1.Name);
            // </SnippetUseProperty>
        }
    }
}