HttpValueCollection和NameValueCollection

问题描述

HttpValueCollection 和 NameValueCollection 有什么区别?
如有可能，请举例说明.

What is the difference between HttpValueCollection and NameValueCollection?
If possible please explain with example.

谢谢

推荐答案

NameValueCollection 对键区分大小写，而 HttpValueCollection 不区分大小写.同样， HttpValueCollection 是一个内部类，它从 NameValueCollection 派生，您从不应该在代码中直接使用它. HttpValueCollection 的另一个属性是，当您将值添加到此集合时，它会自动对值进行url编码.

NameValueCollection is case sensitive for the keys, HttpValueCollection isn't. Also HttpValueCollection is an internal class that derives from NameValueCollection that you are never supposed to use directly in your code. Another property of HttpValueCollection is that it automatically url encodes values when you add them to this collection.

以下是使用 HttpValueCollection 类的方法:

class Program
{
    static void Main()
    {
        // returns an implementation of NameValueCollection
        // which in fact is HttpValueCollection
        var values = HttpUtility.ParseQueryString(string.Empty);
        values["param1"] = "v&=+alue1";
        values["param2"] = "value2";*

        // prints "param1=v%26%3d%2balue1&param2=value2"
        Console.WriteLine(values.ToString());
    }
}

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