C#中包含&的字符串的帖子问题

Question

我正在尝试向 url 发布一个帖子，该帖子应如下图所示。

提琴手的正确帖子

问题发生：当我发布它时，它从 & （与号）溢出并为提琴手正文中的键值创建单独的条目。

我在提琴手的帖子

我应该怎么做才能出现在单键值对中？

我正在尝试发布以下数据：

responseData = "paymentid=100131806470125606&result=NOT+CAPTURED&auth=138601&ref=806420053674&tranid=131806429899386&postdate=0305&trackid=100001182618838&udf1=1&udf2=2&udf3=3&udf4=4&udf5=5&amt=5190.0&authRespCode=51"


        using (WebClient wc = new WebClient())
        {
            wc.Headers[HttpRequestHeader.ContentType] = "application/x-www-form-urlencoded";
            string HtmlResult = wc.UploadString("https://example.com/test.php", "authRespCode=1&responseData = " + responseData);
        }

Answer 1

你可以使用HttpUtility.ParseQueryString:

var res = HttpUtility.ParseQueryString(responseData);

然后你可以像这样访问你的参数：

res["paymentid"]

等等……

Answer 2

添加这一行解决了我的问题：

responseData = responseData.Replace("&", "&");
responseData = HttpUtility.UrlEncode(responseData);

完整代码：

string responseData = Utilitycl.GetHtmlInputValue(getString, "responseData", Utilitycl.ELEMENTTYPE.INPUT);
responseData = responseData.Replace("&", "&");
responseData = HttpUtility.UrlEncode(responseData);
using (WebClient wc = new WebClient())
{
    wc.Headers[HttpRequestHeader.ContentType] = "application/x-www-form-urlencoded";
    string HtmlResult = wc.UploadString("https://example.com/test.php", "authRespCode=1&responseData = " + responseData);
}

Answer 3

您需要转义您的 URI 字符串：

string HtmlResult = wc.UploadString("https://example.com/test.php", "authRespCode=1&responseData = " + Uri.EscapeUriString(responseData));