Question

我将“在InfoPeople使用未经签名的版本”。我不敢肯定,为什么把我的班子作为教科书的榜样。有些人可以对此稍作说明。感谢。

  class personInfo
    {
        public string fName;
        public string lName;
        public int personID;
    }
    class Program
    {
        static void Main(string[] args)
        {
            personInfo InfoPeople;
            InfoPeople.fName = "jeff";
            Console.WriteLine("the fName is: " + " " + InfoPeople.fName);
        }
    }

Answer 1

阁下:

personInfo InfoPeople = new personInfo();

I would try and conform to C# style type/casing conventions:

PersonInfo infoPeople = new PersonInfo();

Answer 2

You need to new your object instance like this:

personInfo InfoPeople = new personInfo();

这只是C# syntax制造新物体的例子。

Answer 3

由于<代码>InfoPeople是一种可参照人信息的变量,但你从未实际创建人信息/代码>。



Fix it by saying:

personInfo InfoPeople = new personInfo();




By the way, your naming convention isn t very conventional. People generally PascalCase class names and camelCase variables. Try to follow that convention so that your code is easier to understand.

Answer 4


In C#, you must assign a value to a local variable before it is used -- local variables do not default to anything (not even the default value of the type!).

正如其他人所指出的,正确的解决办法很可能使用new personInfo(。然而,在<代码>InfoPeople变量(在使用该代码的地方)上仅仅指定了null,便可删除汇编时的错误(在操作时间段可找到;-)

(例如,汇编者错误与InfoPeople无任何关系,其中包含“无效”价值——它只注意以前曾分配过t Value<>>。)

幸福 co。

摘图:

// C# allows one to instantiate a new object // and assign members at the same time. personInfo InfoPeople = new personInfo { fName = "jeff", };

Answer 5

页: 1 你用“personInfoPeople说明”具体指明了标的类型,但没有分配记忆。当你用新的()关键词来做时,它实际上制造了记忆中的物体,这是错误。

personInfo InfoPeople = new personInfo()

Answer 6

您宣布以下类型的地方变量:personInfo, 名称:,但您在尝试使用之前没有给它分配价值。汇编者可以证明这一点,因此可以提出申诉。足够简单。

Answer 7

有权立即审理某人的案件信息

  class personInfo
{
    public string fName;
    public string lName;
    public int personID;
}
class Program
{
    static void Main(string[] args)
    {
        personInfo InfoPeople = new personInfo();
        InfoPeople.fName = "jeff";
        Console.WriteLine("the fName is: " + " " + InfoPeople.fName);
    }
}

Answer 8

页: 1 信息:

个人信息信息数据库=新人信息数据库;

Answer 9

你们需要把这一点作为新事物来做吗?

Answer 10

“新个人信息”你必须从这几类物体中立即发送。

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