要将多个参数放入查询字符串，请使用&分开它们:

例如

To put multiple parameters into a query string, use & to separate them:

For example

example.com/default.asps?animal=tiger&fruit=apple

要提取它们，请使用

To extract them, use

string myAnimal = Request.QueryString("animal")
string myFruit = Request.QueryString("fruit")

实际上，您可以通过两种方式做到这一点.

1.您可以使用许多变量构建链接，例如:
www.whatever.com/default.aspx? category1 = A& category2 = B& category3 = C 等

2.您可以在一个类别名称中编写您的个人逻辑:
www.whatever.com/default.aspx? category = A | B | C
然后，当您获得类别值时，只需对其进行解析即可.

希望对您有所帮助.

Actually here are two ways you can do that.

1. You can build a link with many variables like:
www.whatever.com/default.aspx?category1=A&category2=B&category3=C and so on

2. You can program your personal logic in one category name:
www.whatever.com/default.aspx?category=A|B|C
and after when you get a category value just parse it.

I hope it helps.