系统类型;(System.Type; implicit cast to string)

系统类型;(System.Type; implicit cast to string)

在查看代码定义窗口下的System.Type类时，我似乎无法理解如何将此类的实例隐式转换为字符串。 例如，在以下代码中：

int foo = 0; Console.WriteLine("Hi! I'm a type of type {0}", foo.GetType());

如何将GetType（）产生的System.Type隐式转换为字符串？

While looking at the System.Type class under the Code Definition Window, I cannot seem to understand how an instance of this class is implicitly cast to string. For example, on the following code:

int foo = 0; Console.WriteLine("Hi! I'm a type of type {0}", foo.GetType());

How was the System.Type resulting from GetType() implicitly cast to string?

最满意答案

它不是隐式地转换为字符串。 它被转换为Object （使用标准的隐式引用转换），并且String.Format正确地格式化它 - 在这种情况下通过调用ToString 。

这不是在编译时完成的。 您显示的代码调用Console.WriteLine(string, object)重载。

It's not being implicitly cast to string. It's being converted to Object (with the standard implicit reference conversion), and String.Format is formatting it appropriately - by calling ToString in this case.

This is not being done at compile-time. The code you've shown calls the Console.WriteLine(string, object) overload.