C＃-DateTime构造函数调用 [英] C# - DateTime Constructor Call

问题描述

因此，我有一个程序，该程序的构造函数的输入为DateTime。

So, I have this program that has a constructor with the inputs as DateTime.

但是每当我尝试创建该Class的对象并传递DateTime时，

But whenever I try to create the object of that Class, and pass the DateTime as argument, there is an error.

代码如下：

 public Student(DateTime dob)
        {
            DateofBirth = dob;
        }
    }
    class Program
    {
        static void Main(string[] args)
        {
            var myprogram = new Student(1995,04,29);

但是，在Student类中显示错误，表明构造函数不能接受三个参数。

But, it's showing error in the Student class stating that constructor cannot take three arguments. Please help!

PS：上面和下面都有代码，因此请忽略括号。

PS: There is code above and below, so ignore the brackets.

推荐答案

是的-您正试图将三个整数参数传递给构造函数，但它接受 DateTime 值。您当前未创建 DateTime 值。您需要做的就是将构造函数调用更改为：

Well yes - you're trying to pass three integer arguments to the constructor, but it accepts a DateTime value. You're not currently creating a DateTime value. All you need to do is change your constructor call to:

var myprogram = new Student(new DateTime(1995, 4, 29));

这将不隐式发生-您需要告诉编译器 did 的意思是创建一个 DateTime 。

This will not happen implicitly - you need to tell the compiler that you really did mean to create a DateTime.

作为替代，您可以添加一个 Student 构造函数来创建 DateTime 并链接到另一个构造函数：

As an alternative you could add a Student constructor to create the DateTime and chain to the other constructor:

public Student(int year, int month, int day)
    : this(new DateTime(year, month, day))

但是对于 Student 类。

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