Htt的prequest索引搜索顺序 [英] Search order of HttpRequest indexer

问题描述

如果您通过请求[关键]做一个简单的索引要求的项目，它看起来的 4的位置。什么是订单？有人提出在饼干，ServerVariables，窗体和查询字符串的页面上的猜测。有谁知道肯定？文件将是一个奖金：）

If you do a simple index into Request's items via Request[key], it looks in 4 locations. What's the order? Someone makes a guess on that page at "Cookies, ServerVariables, Form and QueryString". Does anyone know for sure? Documentation would be a bonus :)

推荐答案

公共字符串此[字符串键] {搞定; }

public string this[string key] { get; }

声明类型：System.Web.Htt prequest
集：System.Web，版本= 2.0.0.0

Declaring Type: System.Web.HttpRequest Assembly: System.Web, Version=2.0.0.0

public string this[string key]
{
    get
    {
        string str = this.QueryString[key];
        if (str != null)
        {
            return str;
        }
        str = this.Form[key];
        if (str != null)
        {
            return str;
        }
        HttpCookie cookie = this.Cookies[key];
        if (cookie != null)
        {
            return cookie.Value;
        }
        str = this.ServerVariables[key];
        if (str != null)
        {
            return str;
        }
        return null;
    }
}

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