C＃中：＆QUOT之差; System.Object的＆QUOT;和＆QUOT;对象＆QUOT; [英] c#: difference between "System.Object" and "object"

问题描述

在C＃中，有没有使用 System.Object的在code，而不是任何区别只是对象或 System.String ，而不是字符串等等？或者是它只是一个风格问题？

In C#, is there any difference between using System.Object in code rather than just object, or System.String rather than string and so on? Or is it just a matter of style?

是否有一个原因，一种形式是preferrable其他？

Is there a reason why one form is preferrable to the other?

推荐答案

字符串是全球:: System.String的别名。它只是语法糖。两者的究竟的互换，而且会在编译code没有区别。

string is an alias for global::System.String. It's simply syntactic sugar. The two are exactly interchangable, and there'll be no difference in the compiled code.

我个人使用的变量名等别名，但我用的CLR类型名称在API的名称，例如：

Personally I use the aliases for variable names etc, but I use the CLR type names for names in APIs, for example:

public int ReadInt32() // Good, language-neutral

public int ReadInt() // Bad, assumes C# meaning of "int"

（请注意，返回类型是不是一个真正的名字 - 这是连接codeD作为元数据的类型，所以有没有出现混乱）

(Note that the return type isn't really a name - it's encoded as a type in the metadata, so there's no confusion there.)

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