在 C# 3.0 及更高版本，当属性访问器中不需要任何其他逻辑时，自动实现的属性会使属性声明更加简洁。它们还允许客户端代码创建对象。当你声明以下示例中所示的属性时，编译器将创建仅可以通过该属性的
get 和 set 访问器访问的专用、匿名支持字段。

// This class is mutable. Its data can be modified from

// outside the class.

class Customer

{

    // Auto-Impl Properties for trivial get and set

    public double TotalPurchases { get; set; }

    public string Name { get; set; }

    public int CustomerID { get; set; }

    // Constructor

    public Customer(double purchases, string name, int ID)

    {

        TotalPurchases = purchases;

        Name = name;

        CustomerID = ID;

    }

    // Methods

    public string GetContactInfo() {return "ContactInfo";}

    public string GetTransactionHistory() {return "History";}

    // .. Additional methods, events, etc.

}

class Program

{

    static void Main()

    {

        // Intialize a new object.

        Customer cust1 = new Customer ( 4987.63, "Northwind",90108 );

        //Modify a property

        cust1.TotalPurchases += 499.99;

    }

}