.net - CultureInfo.CurrentCulture 可以为空吗？

Question

CultureInfo.CurrentCulture 可以为空吗？

空值会使我的程序崩溃，这是我不想要的。所以我问，为了安全起见，我需要做什么吗？

var culture = CultureInfo.CurrentCulture ?? CultureInfo.InvariantCulture

Answer 1

看起来肯定不是null :

The culture is a property of the executing thread. This read-only property is equivalent to retrieving the CultureInfo object returned by the Thread.CurrentCulture property.

Thread.CurrentCulture 如果您尝试将其设置为 null，则会引发异常，因此假设具有非 null 是合乎逻辑的值是一个不变量。

除此之外， CultureInfo.CurrentCulture给出确定其初始值的算法:

How a Thread's Culture Is Determined

When a thread is started, its culture is initially determined as follows:

• By retrieving the culture that is specified by the DefaultThreadCurrentCulture property in the application domain in which the thread is executing, if the property value is not null.

• By calling the Windows GetUserDefaultLocaleName function.

同样，这不会打开 null 的选项。值(value)。