C#中的var vs Object [英] var vs Object in C#

问题描述

可能重复:
"var"之间的差异和对象"在C#

我想知道var和object之间的区别.

I would like to know the difference between var and object.

何时使用Var和何时使用Object.

When to use Var and when to use Object.

使用它们的优缺点.

推荐答案

var 只是让编译器为我选择正确的变量类型"的简写(编译时类型推断是更准确的术语).

var is just shorthand for "let the compiler pick the right variable type for me" (compile-time type-inference is the more exact term).

object 是一种特定的类型.所有其他引用类型都源自 object ，因此您可以将任何内容分配给 object 类型的变量.

object, on the other hand, is a specific type; all other reference types derive from object, so you can assign anything to a variable of type object.

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