HttpFormUrlEncodedContent object not encoding the paremeters

Question

Im developing windows universal store app where it communicates to web api.
Previously I was using "System.Net.Http" api for communication.Now changed the code and using "Windows.web.Http".

I am facing problem with HttpFormUrlEncodedContent object in my application for a PostAsync method of Windows.Web.Http.HttpClient.

Code Snippet :
------------------
IHttpContent content = null;
content = new HttpFormUrlEncodedContent(postData);// postData (IDictionary<string, string> postData)

Problem: postData is not encoding.
Result : FIRST_PARAMETER%2BSECOND_PARAMETER%2BTHIRD_PARAMETER

Working code snippet using "System.Net.Http"
---------------------------------------------
HttpContent content = null;
content = new FormUrlEncodedContent(postData);

Is any other way of defining the content of my PostAsync method?


Thanks.

Answer 1

Can you give more explicit information on what parameters are you actually trying to pass in? For example, if I use the below code, then both HTTP requests send the POST request using the same header & data:

A.) The HTTP header: Content-Type: application/x-www-form-urlencoded

B.) The HTTP body: "name=John+Doe&age=45&test=A%2BB%3DC" (without quotes)

private async void btnSendRequest_Click(object sender, RoutedEventArgs e)
        {
            txtOut.Text = "";
            try
            {
                Windows.Web.Http.HttpClient client = new Windows.Web.Http.HttpClient();
                Uri uri = new Uri("http://127.0.0.1/time.aspx");
                List<KeyValuePair<string, string>> formData = new List<KeyValuePair<string, string>>();
                formData.Add(new KeyValuePair<string, string>("name", "John Doe"));
                formData.Add(new KeyValuePair<string, string>("age", "45"));
                formData.Add(new KeyValuePair<string, string>("test", "A+B=C"));
                
                Windows.Web.Http.HttpFormUrlEncodedContent content = new Windows.Web.Http.HttpFormUrlEncodedContent(formData);
                Windows.Web.Http.HttpResponseMessage response = await client.PostAsync(uri, content);
                String responseString = await response.Content.ReadAsStringAsync();
                txtOut.Text = responseString;
            }
            catch (Exception oEx)
            {
                txtOut.Text = "Exception: " + oEx.Message;
            }
        }

        private async void btnSendRequest_old_Click(object sender, RoutedEventArgs e)
        {
            txtOut.Text = "";
            try
            {
                System.Net.Http.HttpClient client = new System.Net.Http.HttpClient();
                Uri uri = new Uri("http://127.0.0.1/time.aspx");
                List<KeyValuePair<string, string>> formData = new List<KeyValuePair<string, string>>();
                formData.Add(new KeyValuePair<string, string>("name", "John Doe"));
                formData.Add(new KeyValuePair<string, string>("age", "45"));
                formData.Add(new KeyValuePair<string, string>("test", "A+B=C"));

                System.Net.Http.FormUrlEncodedContent content = new System.Net.Http.FormUrlEncodedContent(formData);

                System.Net.Http.HttpResponseMessage response = await client.PostAsync(uri, content);
                String responseString = await response.Content.ReadAsStringAsync();
                txtOut.Text = responseString;
            }
            catch (Exception oEx)
            {
                txtOut.Text = "Exception: " + oEx.Message;
            }
        }

Answer 2

Thanks Prashant.