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/
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.
Related
I spent some time trying to figure this one out so I decided to post it here - hopefully it saves some time to someone else.
I'm building an ASP.Net Core Web API MVC application that accepts a Get request and makes a call to an external API (in this case is the Bing Image Search). When returning a result, it would give me a escaped Json string. Example:
"{\"_type\": \"Images\", \"instrumentation\": {\"pageLoadPingUrl\": \"https:...}
Instead of:
{
"_type": "Images",
"instrumentation": {
"pageLoadPingUrl": "https:....
}
Then, I wanted to pass it back to my web client with all sort of non-successes.
I will post shortly how I solved it.
Cheers!
So the issue was that I was trying to process the reponse content the wrong way. All I had to do is user the JsonConvert library.
My full API method looks like this:
[HttpGet("{id}")]
public async Task<IActionResult> Get(string id)
{
using (var client = new HttpClient())
{
client.DefaultRequestHeaders.Add("Ocp-Apim-Subscription-Key", "Enter your key here");
var uri = new Uri("uri to external API here + any parameters");
var response = await client.GetStringAsync(uri);
var jsonResponse = JsonConvert.DeserializeObject(response);
return Ok(jsonResponse);
}
}
Cheers! :)
I'am trying to pass values from a controller to another controller in another domain. I'am adding data to a NameValueCollection and pass it to another controller [httppost] method and receiving data there mapped to a Model same as i passed from.
Currently i'am running it locally by opening two instance of VS simultaneously. When the both VS is opened the values are passed correctly and the information is written to db correctly and i receive a response like "{byte[0]}". Now when i try stopping the destination controller Project and try to submit data then it wont work but still i get the same response as "{byte[0]}". Can somebody please help me how to return the response command in this scenario. Is there a way a understand the UploadValues are completed or not completed.
.........
.........
NameValueCollection resumeDetails = new NameValueCollection();
resumeDetails.Add("FirstName", "KRIZTE");
byte[] res = this.Post(ConfigurationManager.AppSettings["RedirectionUrl"].ToString(), resumeDetails);
return View("Index");
}
public byte[] Post(string uri, NameValueCollection resumeDetails)
{
byte[] response = null;
WebClient client = new WebClient();
response = client.UploadValues(uri, resumeDetails);
return response;
}
You should not use the WebClient because of problems like this.
Microsoft implemented HttpClient class as a newer API and it has these benefits:
HttpClient is the newer of the APIs and it has the benefits of
has a good async programming model
1- being worked on by Henrik F Nielson who is basically one of the inventors of HTTP, and he designed the API so it is easy for you to follow the HTTP standard, e.g. generating standards-compliant headers
2- is in the .Net framework 4.5, so it has some guaranteed level of support for the forseeable future
3- also has the xcopyable/portable-framework version of the library if you want to use it on other platforms - .Net 4.0, Windows Phone etc.
so I'm gonna show you an example of using HttpClient:
var uri = "http://google.com";
var client = new HttpClient();
try
{
var values = new List<KeyValuePair<string, string>>();
// add values to data for post
values.Add(new KeyValuePair<string, string>("FirstName", "KRITZTE"));
FormUrlEncodedContent content = new FormUrlEncodedContent(values);
// Post data
var result = await client.PostAsync(uri, content);
// Access content as stream which you can read into some string
Console.WriteLine(result.Content);
// Access the result status code
Console.WriteLine(result.StatusCode);
}
catch(AggregateException ex)
{
// get all possible exceptions which are thrown
foreach (var item in ex.Flatten().InnerExceptions)
{
Console.WriteLine(item.Message);
}
}
I have an API (https://www.readability.com/developers/api/parser#idm386426118064) to extract the contents of the webapges, but on passing a shortened url or an url that redirects to other, it gives error.
I am developing windows phone 8.1 (xaml) app. Is there any way to get the destination url in c# or any work around?
eg url - http://www.bing.com/r/2/BB7Q4J4?a=1&m=EN-IN
You could intercept the Location header value before the HttpClient follows it like this:
using (var handler = new HttpClientHandler())
{
handler.AllowAutoRedirect = false;
using (var client = new HttpClient(handler))
{
var response = await client.GetAsync("shortUrl");
var longUrl = response.Headers.Location.ToString();
}
}
This solution will always be the most efficient because it only issue one request.
It is possible however, that the short url will reference another short url and consequently cause this method to fail.
An alternative solution would be to allow the HttpClient to follow the Location header value and observe the destination:
using (var client = new HttpClient())
{
var response = client.GetAsync("shortUrl").Result;
var longUrl = response.RequestMessage.RequestUri;
}
This method is both terser and more reliable than the first.
The drawback is that this code will issue two requests instead of one.
You can get the ResponseUri from GetResponse():
string redirectedURL = WebRequest.Create("http://www.bing.com/r/2/BB7Q4J4?a=1&m=EN-IN")
.GetResponse()
.ResponseUri
.ToString();
Interesting article, by the way.
You need to inspect the headers returned from the URL.
If you get HTTP return codes 301 or 302, then you are being notified that the page is redirecting you to another URL.
See http://www.w3.org/Protocols/HTTP/HTRESP.html for more details about HTTP return codes.
I need to HTTP POST a complex type to a web service (which I don't controll). I believe the web service was built using an older version of ASP.NET MVC. It model binds payloads formatted as form-url-encoded.
If I fire the following at it, it works perfectly. As you can see, I've manually created a collection of key/value pairs.
var values = new List<KeyValuePair<string, string>>
{
new KeyValuePair<string, string>("Username", "some-username"),
new KeyValuePair<string, string>("Password", "some-password"),
new KeyValuePair<string, string>("Product", "some-product")
};
var content = new FormUrlEncodedContent(values);
var response = new HttpClient().PostAsync(url, content).Result;
But I don't want to have to do this, I just want to send complex types if I can.
var content = new ComplexType("some-username", "some-password", "some-product");
var response = new HttpClient().PostAsync(url, content).Result;
I believe there used to be a HttpRequestMessage<T> but that's been dropped in favour of
HttpClient.PostAsJsonAsync<T>(T value) sends “application/json”
HttpClient.PostAsXmlAsync<T>(T value) sends “application/xml”
But I don't want to send Json or XML I want to send form-url-ecncoded without the hassle of converting complex types to collections of key/value pairs.
Essentially I'd also like to know the answer to this question that Jaans poses (His is the second comment to the second answer).
Can anyone advise please.
Flurl [disclosure: I'm the author] provides a method that seems to be exactly what you're looking for:
using Flurl.Http;
var resp = await url.PostUrlEncodedAsync(new {
Username = "some-username",
Password = "some-password",
Product = "some-product",
});
Flurl is small and portable, and uses HttpClient under the hood. It is available via NuGet:
PM> Install-Package Flurl.Http
Since you've almost got a solution that does work, I'd say just go with it. Organize your code inside an extension method so that you can post using that, something like:
public static async Task<HttpResponseMessage> PostAsFormUrlEncodedAsync<T>(
this HttpClient httpClient, T value)
{
// Implementation
}
Your implementation just needs to serialize your object into form-encoded values, which you should be able to do easily with reflection.
Then you can call the code exactly as you would for JSON or XML.
You can do this:
var content = new ComplexType("some-username", "some-password", "some-product");
var response = new HttpClient().PostAsync<ComplexType>(url, content, new FormUrlEncodedMediaTypeFormatter()).Result;
I just started playing around with some API's in C#. In my form I had added a service reference http://wsf.cdyne.com/WeatherWS/Weather.asmx. Everything works great and I am able to utilize its library. Now I am trying to use for example http://free.worldweatheronline.com/feed/apiusage.ashx?key=(key goes in here)&format=xml. [I have a key] Now when I try to use it as service reference I am not able to use.
Do I have to call it in my form instead of referencing it? or do some sort of conversion? Also does it matter if its xml or json type?
ASMX is old technology and uses SOAP under the hood. SOAP doesn't tend to work with query string parameters, it takes parameters as part of the message.
ASHX is something different (it could be anything, it's one way to write a raw HTML/XML page in .NET), so you can't transfer the method for calling one to the other. It also won't have a service reference, it's likely you request it via a raw HTTP request. You'll need to consuly the service documentation to discover how to use it.
worldweatheronline doesn't return a SOAP-XML that is consumable by a WebService client. Therefore you should download the response and parse it as done with many REST services.
string url = "http://free.worldweatheronline.com/feed/apiusage.ashx?key=" + apikey;
using (WebClient wc = new WebClient())
{
string xml = wc.DownloadString(url);
var xDoc = XDocument.Parse(xml);
var result = xDoc.Descendants("usage")
.Select(u => new
{
Date = u.Element("date").Value,
DailyRequest = u.Element("daily_request").Value,
RequestPerHour = u.Element("request_per_hour").Value,
})
.ToList();
}
Also does it matter if its xml or json type?
No, at the end you have to parse the response by yourself.
string url = "http://free.worldweatheronline.com/feed/apiusage.ashx?format=json&key=" + apikey;
using (WebClient wc = new WebClient())
{
string json = wc.DownloadString(url);
dynamic dynObj = JsonConvert.DeserializeObject(json);
var jArr = (JArray)dynObj.data.api_usage[0].usage;
var result = jArr.Select(u => new
{
Date = (string)u["date"],
DailyRequest = (string)u["daily_request"],
RequestPerHour = (string)u["request_per_hour"]
})
.ToList();
}
PS: I used Json.Net to parse the json string