xamarin, read post request (with parameters) to server

Question

I'm trying to send a request from Xamarin (webview application). Just now, I'm sending a request from my client with a simple form with a POST method. The request is received by:

bool HandleShouldStartLoad (UIWebView webView, NSUrlRequest request, UIWebViewNavigationType navigationType)
{
            var resources = request.Url.ResourceSpecifier.Split ('?');
            var method = resources [0];
            if(method == "test")
            {
                        //TODO
            }
}

Just now, I can read parameters as URL, but for some reason, I can't read the data that I sent with the form with POST Method. How I can get the keys and values in the request?

Answer 1

I find an answer, the only way that I found was: If you need do a request to a remote server, you can do it using something like:

Your View.cshtml

<form action="http://myaddress:3000/upload" enctype="multipart/form-data" method="post">
<input type="text" name="email" />
<input type="text" name="email" />
<input type="submit" />
</form>

And here you can use a Post or Get Method, but if you need process the data first you can use:

<form action="hybrid:RegisterUser" enctype="multipart/form-data" method="GET">
                <input type="email" name="email"  required="required" placeholder="myemail@mydomain.com" class="input-register" required="required"/>
                <input type="password" name="password" placeholder="Password" class="input-register" required="required"/>
                <br />
                <input type="submit" class="btn" value="Register" />
            </form>

Your HybridViewController.cs

if (method == "RegisterUser") 
{
                RequestProcessor rp = new RequestProcessor();
                var parameters = System.Web.HttpUtility.ParseQueryString (resources [1]);
                Dictionary<string,string> requestParams = new Dictionary<string,string> ();
                string email = parameters["email"];
                requestParams.Add ("email", email )
                rp.HttpPostRequest("users/add", requestParams);
                rp.HttpGetRequest("users/add?email" + email);
}

**Your RequestProcessor.cs **

public string HttpPostRequest(string url, Dictionary<string,string> postParameters)
        {
            url = "http://Mydomain:3000/" + url;
            string postData = "";
            foreach (string key in postParameters.Keys)
            {
                postData += HttpUtility.UrlEncode(key) + "="
                    + HttpUtility.UrlEncode(postParameters[key]) + "&";
            }

            HttpWebRequest myHttpWebRequest = (HttpWebRequest)HttpWebRequest.Create(url);
            myHttpWebRequest.Method = "POST";
            byte[] data = System.Text.Encoding.ASCII.GetBytes(postData);
            myHttpWebRequest.ContentType = "application/x-www-form-urlencoded";
            myHttpWebRequest.ContentLength = data.Length;
            Stream requestStream = myHttpWebRequest.GetRequestStream();
            requestStream.Write(data, 0, data.Length);
            requestStream.Close();
            HttpWebResponse myHttpWebResponse = (HttpWebResponse)myHttpWebRequest.GetResponse();
            Stream responseStream = myHttpWebResponse.GetResponseStream();
            StreamReader myStreamReader = new StreamReader(responseStream, System.Text.Encoding.Default);
            string pageContent = myStreamReader.ReadToEnd();
            myStreamReader.Close();
            responseStream.Close();
            myHttpWebResponse.Close();
            return pageContent;
        }

        public string HttpGetRequest(string Url)
        {
            string Out = String.Empty;
            Url = "http://Mydomain:3000/" + Url;
            System.Net.WebRequest req = System.Net.WebRequest.Create(Url);
            try
            {
                System.Net.WebResponse resp = req.GetResponse();
                using (System.IO.Stream stream = resp.GetResponseStream())
                {
                    using (System.IO.StreamReader sr = new System.IO.StreamReader(stream))
                    {
                        Out = sr.ReadToEnd();
                        sr.Close();
                    }
                }
            }
            catch (ArgumentException ex)
            {
                Out = string.Format("HTTP_ERROR :: The second HttpWebRequest object has raised an Argument Exception as 'Connection' Property is set to 'Close' :: {0}", ex.Message);
            }
            catch (WebException ex)
            {
                Out = string.Format("HTTP_ERROR :: WebException raised! :: {0}", ex.Message);
            }
            catch (Exception ex)
            {
                Out = string.Format("HTTP_ERROR :: Exception raised! :: {0}", ex.Message);
            }

            return Out;
        }