关于HttpWebRequest上传文件的问题

Question

我现在上传提示错误：参数错误然后，问了对方，那人说 upload参数是必须的，我就不知道这个参数是加到哪儿的

Answer 1

string SendPostRequest(string url, string postString)
    {
        byte[] postData = Encoding.UTF8.GetBytes(postString);
        WebClient client = new WebClient();
        client.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
        client.Headers.Add("ContentLength", postData.Length.ToString());
        byte[] responseData = client.UploadData(url, "POST", postData);
        return Encoding.UTF8.GetString(responseData);
    }
Response.Write(SendPostRequest("http://www.webxml.com.cn/WebServices/WeatherWebService.asmx/getSupportCity", "byProvinceName=辽宁"));
看下这个  这是请求服务 参数byProvinceName是辽宁 可以正确post给server 不知道对你有没有帮助..

Answer 2

string SendPostRequest(string url, string postString)
    {
        byte[] postData = Encoding.UTF8.GetBytes(upload + postString);
        WebClient client = new WebClient();
        client.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
        client.Headers.Add("ContentLength", postData.Length.ToString());
        byte[] responseData = client.UploadData(url, "POST", postData);
        return Encoding.UTF8.GetString(responseData);
    }
试试

Answer 3

string SendPostRequest(string url, string postString)
    {
        byte[] postData = Encoding.UTF8.GetBytes("upload=" + postString);
        WebClient client = new WebClient();
        client.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
        client.Headers.Add("ContentLength", postData.Length.ToString());
        byte[] responseData = client.UploadData(url, "POST", postData);
        return Encoding.UTF8.GetString(responseData);
    }
试试

Answer 4

OK,我试试，刚才我问了对方，对方也说 upload 是上传的文件流

Answer 5

OK,我试试，刚才我问了对方，对方也说 upload 是上传的文件流结贴给分啊，火火火

Answer 6

OK,我试试，刚才我问了对方，对方也说 upload 是上传的文件流结贴给分啊，火火火上传还是不成功，一直提示参数错误