我如何确定接口包含的类

Question

i have a set of classes that belong to an interface;

public  class Platform : IGraphic
{
}

public class Decal : IGraphic
{
}

public class Character : IGraphic
{
}

public interface IGraphic
{
}

If i set an IGraphic value to point to say Decal like so;

IGraphic graphic = new Decal();

How can i, at some later point, determine which Class the Interface has been set to?

Answer 1

您可以使用以下方法确定接口的实现：

graphic.GetType()

Answer 2

First, classes do not belong to an interface, they can implement it. Now, after we have defined it you can see that implementing the interface enables you to know that such methods are implemented in each class that implements the interface. So your question is kind of backwards, you can implement the method differently for each class so you won't have to know what is the type of your object.

If you insist knowing the type you can use reflection. I advice you using reflection as less as you can. If you wan't to describe the purpose of your program maybe we can help you avoiding reflection (usually- a better architecture)

Answer 3

Use graphic.GetType() .

This will get the Type of the instance.

Note that this works for every kind of object, not just for interfaces.

You could conceivably also use

if (graphic is Platform)

or

if (graphic is Decal)

etc.