C＃类引用，而不是实例的引用 [英] c# class reference as opposed to instance reference

问题描述

我可以在本地引用在C＃中的一类，而不是一个类的实例？下面的代码将无法编译，但作为一个例子，是这样的：

Can I locally reference a class in C#, instead of an instance of a class? The following code won't compile but, as an example, something like:

void someFunc()
{
    var a = System.Math;
    var b = a.Abs(4);
}

编辑：在真正的程序它不是System.Math类和我米想构造类，并返回所构造的值。我没有原来认为在这我想使用类的背景下将相应和，也许它不应该是。

edit: In the real program it's not the System.Math class and I'm wanting to construct the class and return the constructed value. I didn't think originally that the context in which I wanted to use the class would be relevent, and probably it shouldn't be.

Anastasiosyal有一个有趣的想法使用本地代表做。

Anastasiosyal has an interesting idea with using a local Delegate to do it.

推荐答案

您不能分配的变量的静态类的值。现在的问题是的为什么的你会想这样做，还有，你可以解决你的问题。

You cannot assign a variable a value of a static class. The question is why would you want to do this, there are probably other ways that you could tackle your problem

例如可能是其他方式。你可以使用委托指派操作要执行：

e.g. you could use delegates to assign the operation you want to perform:

Func<int,int> operation = Math.Abs; 
// then you could use it like so: 
int processedValue = operation(-1);

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