c＃中有任何派生数据类型吗？它们是什么？ [英] Are there any derived data types in c#.what r they?

问题描述

c＃中是否有任何派生数据类型？

解决方案

C＃中的所有数据类型都是派生的，但除外object ，这是从中派生所有其他类的根类。



来自对象您将获得引用类型，例如 string ，以及所有类类型，以及 ValueType ，所有 struct 和basic数据类型，例如 int ， float ， double ， char 等等已经诞生。



这就是为什么你可以将任何类型的数据分配给对象变量：

< pre lang =c＃> string s = 你好有编码器！;
string [] words = s.Split（' '）;
int val = 42 ;
object o = s;
o =字;
o = val;
o = true ;

请看这里：

http://stackoverflow.com/questions/4729094/value-types-inherit-from-system-object-why [<一个href =http://stackoverflow.com/questions/4729094/value-types-inherit-from-system-object-whytarget =_ blanktitle =New Window> ^ ]

在实际的基础上，你可能表现得好像 .NET中的所有东西都是一个对象;然而，从技术上讲，这并不完全正确，正如Eric Lippert在并非一切都来自于对象：中所指出的那样：[ ^ ]。



接口派生来自Interface，而不是Object，但正如Eric指出的那样，它们可以转换为Object。

Are there any derived data types in c#.what r they?

解决方案

All datatypes in C# are derived, with the exception of object, which is the root class from which all others are derived.

From object you get reference types such as string, and all class types, and the ValueType, from which all struct and "basic" datatypes such as int, float, double, char, etc. are born.

Which is why you can assign any type of data to an object variable:

string s = "hello there coder!";
string[] words = s.Split(' ');
int val = 42;
object o = s;
o = words;
o = val;
o = true;

Please have a look here:
http://stackoverflow.com/questions/4729094/value-types-inherit-from-system-object-why[^]

On a practical basis, you might as well act as if everything in .NET "is" an Object; however, technically, that's not quite true, as Eric Lippert points out in "Not everything derives from object:" [^].

Interfaces derive from Interface, not Object, but, as Eric points out, they can be converted into an Object.

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