POST json to another url

Question

I've a problem as I need to send some json to a url. When I send all my json and token to the page.

Then there will be no content JSON value into the system.

I have checked up on whether there is some content and it is there, but it sends just do not like json values.

string apiKeyToken = model.reepaytoken; // TOKEN HERE.

string URLLink = APIClassPay.HelperPay.CreateCustomerURL;//URL to send it json to.

WebClient client = new WebClient();
            //JSON coming here!
var JSONCustomer = APIClassPay.HelperPay.CreateCustomer(model.Brugernavn, model.Adresse, model.Byen, model.Postnr.ToString(), model.Mobil.ToString(), model.Fornavn, model.Efternavn);
client.Headers.Add("text/json", JSONCustomer);
client.Headers.Set("X-Auth-Token", apiKeyToken);
string reply = client.DownloadString(URLLink);

When I blow my json looks like this.

[HttpPost]
public ActionResult information(BuyMedlemskabViewModel model)
{
    DataLinqDB db = new DataLinqDB();
    var Pric = db.PriceValues.FirstOrDefault(i => i.id == model.HiddenIdMedlemskab);
    if (Pric != null)
    {
        string _OrderValue = DateTime.Now.Year + Helper.Settings.PlanValue();
        Session[HelperTextClass.HelperText.SessionName.OrderId] = _OrderValue;

        Session[HelperTextClass.HelperText.SessionName.FakturaId] = model.HiddenIdMedlemskab;

        Session[HelperTextClass.HelperText.SessionName.fornavn] = model.Fornavn;
        Session[HelperTextClass.HelperText.SessionName.efternavn] = model.Efternavn;
        Session[HelperTextClass.HelperText.SessionName.Adresse] = model.Adresse;
        Session[HelperTextClass.HelperText.SessionName.Post] = model.Postnr;
        Session[HelperTextClass.HelperText.SessionName.Byen] = model.Byen;
        Session[HelperTextClass.HelperText.SessionName.Mobil] = model.Mobil;


        string apiKeyToken = model.reepaytoken;.

        string URLLink = APIClassPay.HelperPay.CreateCustomerURL;//URL to send it json to.

        WebClient client = new WebClient();
        //JSON coming here!
        var JSONCustomer = APIClassPay.HelperPay.CreateCustomer(model.Brugernavn, model.Adresse, model.Byen, model.Postnr.ToString(), model.Mobil.ToString(), model.Fornavn, model.Efternavn);
        client.Headers.Add("text/json", JSONCustomer);
        client.Headers.Set("X-Auth-Token", apiKeyToken);
        string reply = client.DownloadString(URLLink);


    }
    return RedirectToAction("information");
}

EDIT - Update (ERROR HERE):

ReePay API reference: https://docs.reepay.com/api/

Answer 1

I think there are a few things, you'll have to fix:

First of all you're obviously trying to create a ressource (usually a POST or PUT, speaking in REST-words but you're using WebClient's DownloadString-method which performs a GET. So I think you should probably use a POST or PUT instead but which one to chose exactly depends on the web service you're contacting.

Then you seem to have mistaken the Content-Type-header and tried to pack the payload in there. The payload - your customer JSON - will have to be put into the request's body.

Based on your previous questions I assume the service you're trying to contact is either PayPal or QuickPay. To further help you with this question, it'd be helpful if you could specify which one you use.

If it's QuickPay, please notice that there's an official .NET client which you could use instead of using WebClient on you own.

But anyway for making HTTP requests I'd suggest you to use HttpClient in favor of WebClient. You'd generally do it in a way like this:

using (var httpClient = new HttpClient())
{
    var request = new HttpRequestMessage(HttpMethod.Post, 
         APIClassPay.HelperPay.CreateCustomerURL); 
    request.Headers.Add("X-Auth-Token", apiKeyToken); 
    request.Headers.Add("Content-Type", "application/json");
    request.Content = new StringContent(JSONCustomer);

    var response = await httpClient.SendAsync(request);
}

EDIT:

As you clarified in a comment, the service you're using is Reepay. If you take a look at the documentation of the create customer method, you can see, that the necessary HTTP method is POST. So the code snippet above should generally fit.

Regarding the compilation error you faced, I updated the code-snipped above. There was a mistake in the variable names I chose. Please note, that you dropped the keyword await as I can see from your screenshot. Please re-enter it. If the compiler complains about it, it's very likely that the .NET framework version of your project is less than 4.5 which is necessary to use async/await.

So you should update your project's .NET framework version at best to version 4.6.1 as Microsoft recently announced that support for 4.5 and others is discontinued. Have a look here on how to do that.