创建一个空对象 [英] Creating a Null Object

问题描述

如何在c#中创建一个空对象及其用途?

how to Creating a Null Object in c# and what it use???

推荐答案

如果您的意思是 ^ ]:
这可以用于明确消除对对象的引用 [

If you are meaning assigning null to an Object[^]:
This can be used to explicitly eliminate a reference to an Object[^].

SomeObject so = new SomeObject();
so.DoSomething();
so.Dispose();
so = null; // We are now absolutely sure the SomeObject so was referencing to is no longer referenced by so.
// This should theoretically not be necessary in .NET.

创建一个可空对象:
可以创建可空类型 [

Create a Nullable Object:
It is possible to create Nullable types[^] of value types that would otherwise not allow a null reference.

Nullable<int> i1 = null; // Actually has a null reference.
int? i2 = null; // Same as code above.

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