在C＃中的WebClient请求期间发生异常 [英] An exception occurred during a WebClient request in C#

问题描述

在C＃中的WebClient请求期间发生异常。当我运行项目时遇到错误。如何解决此错误？



var postdata =ratepleplan&1250&roomtype&254;



使用（WebClient客户端=新WebClient（））

{



client.Headers [HttpRequestHeader.Accept] =* / *;

client.Headers [HttpRequestHeader.Referer] =https://dfddff.com/extranet/;

client.Headers [HttpRequestHeader.ContentType] =application / x-www-form-urlencoded; charset = UTF-8;

client.Headers [HttpRequestHeader.ContentLength] = postdata。 Length.ToString（）;

client.Headers [HttpRequestHeader.Cookie] = sessioncookie;

client.Headers [HttpRequestHeader.UserAgent] =Mozilla / 5.0（Windows NT 6.1） ）AppleWebKit / 537.36（KHTML，如Gecko）Chrome / 46.0.2490.86 Safari / 537.36 ;

//client.Headers.Add(HttpRequestHeader.Cookie,conssioncookie）;

byte [] postArray = Encoding.ASCII.GetBytes（postdata）;

byte [] response = client.UploadData（https://dfddff.com/rate，POST，postArray）; ==========>得到错误

var responsehtml = Encoding.UTF8.GetString（response）;

}

An exception occurred during a WebClient request in C#.when i run project got above error.How to solve this error?

var postdata = "ratepleplan&1250&roomtype&254";

using (WebClient client = new WebClient())
{

client.Headers[HttpRequestHeader.Accept] = "*/*";
client.Headers[HttpRequestHeader.Referer] = "https://dfddff.com/extranet/";
client.Headers[HttpRequestHeader.ContentType] = "application/x-www-form-urlencoded; charset=UTF-8";
client.Headers[HttpRequestHeader.ContentLength] = postdata.Length.ToString();
client.Headers[HttpRequestHeader.Cookie] = sessioncookie;
client.Headers[HttpRequestHeader.UserAgent] = "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.86 Safari/537.36";
//client.Headers.Add(HttpRequestHeader.Cookie, sessioncookie);
byte[] postArray = Encoding.ASCII.GetBytes(postdata);
byte[] response = client.UploadData("https://dfddff.com/rate", "POST", postArray); ==========> Got error
var responsehtml = Encoding.UTF8.GetString(response);
}

推荐答案

var postdata = "ratepleplan&1250&roomtype&254";

这是无效的发布数据，必须是喜欢这个

That's not valid post data, it has to be like this

var postdata = "ratepleplan=1250&roomtype=254";

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