如何在对象初始化程序中使用Console.Write? [英] How can I use Console.Write in object initializer?

问题描述

当我在对象初始化程序中使用Console.Write时，出现此错误

When I use Console.Write in object initializer I get this error

错误CS0747无效的初始化器成员声明器

Error CS0747 Invalid initializer member declarator

person[i] = new Karmand()
            {
                Console.Write("first name:"),
                FirstName = Console.ReadLine(),
                LastName = Console.ReadLine(),
                ID = Convert.ToInt32(Console.ReadLine()),
                Hoghoogh = Convert.ToDouble(Console.ReadLine())
            };

推荐答案

您不能，因为Console.Write不是Karmand的可访问属性或字段.您只能在对象初始值设定项中设置类属性和字段的值.

You can't because Console.Write is not an accessible property or field of Karmand. You can only set values of class properties and fields in object initializers.

您的代码是下面代码的语法糖(有些不同).

Your code is a syntactic sugar (a little bit different) for the code below.

var person[i] = new Karmand();
// what do you expect to do with Console.Write here?
person[i].FirstName = Console.ReadLine();
person[i].LastName = Console.ReadLine();
person[i].ID = Convert.ToInt32(Console.ReadLine());
person[i].Hoghoogh = Convert.ToDouble(Console.ReadLine());

如果需要，您可以在Karmand类中有一个构造函数为您打印该构造函数.

You can have a constructor inside Karmand class to print that for you if you want.

public class Karmand
{
    public Karmand(bool printFirstName = false)
    {
        if (printFirstName)
            Console.Write("first name:");
    }

    // rest of class code
}

然后像使用它

person[i] = new Karmand(printFirstName: true)
            {
                FirstName = Console.ReadLine(),
                LastName = Console.ReadLine(),
                ID = Convert.ToInt32(Console.ReadLine()),
                Hoghoogh = Convert.ToDouble(Console.ReadLine())
            };

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