Develop Reference

C# JSON URL get data

Im new to System.Net with C#
I want a way to get info from this website api: https://fn-api.glitch.me/api/aes
from its json to a C# string
I have this so far
I don't know how to get each item and where to put the url (im really new to this).
I want the url in a string:
public class Data
{
public string build { get; set; }
public string netCL { get; set; }
public string manifestID { get; set; }
public string aes { get; set; }
}
public class RootObject
{
public Data data { get; set; }
}

Okay, this is how you get about it. I am showing you an example using HttpClient to first read the content from the API and then de-serialize it using Newtonsoft package.
HttpClient class:
public class HttpClientFactory
{
private string webServiceUrl = "https://fn-api.glitch.me/";
public HttpClient CreateClient()
{
var client = new HttpClient();
SetupClientDefaults(client);
return client;
}
protected virtual void SetupClientDefaults(HttpClient client)
{
//This is global for all REST web service calls
client.Timeout = TimeSpan.FromSeconds(60);
client.BaseAddress = new Uri(webServiceUrl);
}
}
Your Model class:
public class Data
{
public string build { get; set; }
public string netCL { get; set; }
public string manifestID { get; set; }
public string aes { get; set; }
}
public class RootObject
{
public Data data { get; set; }
}
Now, you can call this class and create an instance of the HttpClient like this:
public RootObject InvokeAPI()
{
RootObject apiresponse = new RootObject();
string result = string.Empty;
HttpClientFactory clientFactory = new HttpClientFactory();
var client = clientFactory.CreateClient();
HttpResponseMessage response = client.GetAsync("api/aes").Result;
if (response.IsSuccessStatusCode)
{
result = response.Content.ReadAsStringAsync().Result;
apiresponse = JsonConvert.DeserializeObject<RootObject>(result);
}
return apiresponse;
}
Hope this helps you out.
EDIT:
As per your code, you need to call the API on your Button click:
private void metroButton2_Click_1(object sender, EventArgs e)
{
//You need to invoke the API method !!!!
var apiresponse=InvokeAPI();
metroTextBox1.Text = apiresponse.data.aes;
}
Be sure to put try-catch blocks on your code for error handling.

I'd recommend using a 3rd party library like RestSharp. It'll give you a client that's easy to work with and does the converting into objects automatically.
Alternatively you could use the WebClient and download the JSON. Using something like Json.NET allows you to deserialize the JSON into an object.

Easiest way to read from a URL into a string in .NET
I use JSON.Net.

Unable to deserialize list in a XML Response using ReadAsAsync<T>

[Update: This question is different from the suggested duplicate because this one is about deserialization of XML and the explanation of the problem and solution on this one is clearer as I've included the full source code.]
I'm trying to read and subsequently manipulate a response from a Web API. Its response looks like this:
<MYAPI xsi:noNamespaceSchemaLocation="MYAPI.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<MySite Resource="some resource name">
<Name>some name</Name>
<URL>some url</URL>
<SecondName>Describes something</SecondName>
</MySite>
... A lot of these <MySite>...</MySite> are there
<SomeOtherSite Resource="some resource name">
<Name>some name</Name>
<URL>some url</URL>
</SomeOtherSite>
</MYAPI>
SomeOtherSite is not repeating and only one of it appears at the end of the response. But the MySite is the one that is repeating.
I've modeled the class for this XML response as:
public class MYAPI
{
public List<MySite> MySite { get; set; }
public SomeOtherSite SomeOtherSite { get; set; }
}
public class MySite
{
public string Name { get; set; }
public string URL { get; set; }
public string SecondName { get; set; }
}
public class SomeOtherSite
{
public string Name { get; set; }
public string URL { get; set; }
}
And this is my code:
static void Main()
{
var handler = new HttpClientHandler();
handler.Credentials = new NetworkCredential("MyUsername", "MyPassword");
var client = new HttpClient(handler);
client.BaseAddress = new Uri("https://sitename.com:PortNumber/");
var formatters = new List<MediaTypeFormatter>()
{
new XmlMediaTypeFormatter(){ UseXmlSerializer = true }
};
var myApi = new MYAPI();
HttpResponseMessage response = client.GetAsync("/api/mysites").Result;
if (response.IsSuccessStatusCode)
{
myApi = response.Content.ReadAsAsync<MYAPI>(formatters).Result;
}
}
Now the myApi only has object for SomeOtherSite but the list for the MySite is empty.
Would someone please tell me how I should deserialize this response correctly?
Should I be creating custom media formatter? I have no idea of it by the way.
Also would you please tell me how to model that Resource attribute coming in the response?
And I can't change anything in the WebAPI server. I just need to consume the data from it and use it elsewhere.
Thank You so much!

I solved this after some really good direction from: https://stackoverflow.com/users/1124565/amura-cxg Much Thanks!
The solution was to annotate all the properties with XMLAttributes. And it correctly deserialized the response. And as for the Resource attribute, all I needed was [XmlAttribute(AttributeName="Resource")]
The rest of the source code works as is.
[XmlRoot(ElementName="MYAPI")]
public class MYAPI
{
[XmlElement(ElementName="MySite")]
public List<MySite> MySite { get; set; }
[XmlElement(ElementName="SomeOtherSite")]
public SomeOtherSite SomeOtherSite { get; set; }
}
public class MySite
{
[XmlElement(ElementName="Name")]
public string Name { get; set; }
[XmlElement(ElementName="URL")]
public string URL { get; set; }
[XmlElement(ElementName="SecondName")]
public string SecondName { get; set; }
[XmlAttribute(AttributeName="Resource")]
public string Resource { get; set; }
}
Plus, I didn't need any custom media formatter. And from one of the posts by https://stackoverflow.com/users/1855967/elisabeth , I learned that we should not touch the generated file from xsd.exe tool. So I explicitly set to use the XmlSerializer instead of the DataContractSerializer used by default:
var formatters = new List<MediaTypeFormatter>()
{
new XmlMediaTypeFormatter(){ UseXmlSerializer = true }
};

Asp.NetCore API Controller not getting Data from Json

I have 2 applications, one which posts data to another. When I run the first application the post method in the controller executes but the model or ObjavaDto (objaveList) can't be found so it's null. When I copy-paste the json from var json into Postman everything works. What am I missing?
var json = new JavaScriptSerializer().Serialize(objaveList[2]);
I used [2] just for simplicity reasons because there are a lot of them
string url = "http://localhost:61837/api/Objave";
string result;
using (var client = new WebClient())
{
client.Headers.Add("Content-Type", "application/json");
result = client.UploadString(url, "POST", json);
}
2nd application Controller
namespace StecajeviInfo.Controllers.Api
{
[Route("api/[controller]")]
public class ObjaveController : Controller
{
[HttpPost]
public void Post([FromBody]ObjavaDto objaveList)
{
}
}
}
public class ObjavaDto
{
public string OznakaSpisa { get; set; }
public string NazivOtpravka { get; set; }
public string NazivStecajnogDuznika { get; set; }
public string PrebivalisteStecajnogDuznika { get; set; }
public string SjedisteStecajnogDuznika { get; set; }
public string OIBStecajnogDuznika { get; set; }
public string OglasSeOdnosiNa { get; set; }
public DateTime DatumObjave { get; set; }
public string OibPrimatelja { get; set; }
public string Dokument { get; set; }
}
Sent data looks like this
{
"OznakaSpisa":"St-6721/2015",
"NazivOtpravka":"Rješenje - otvaranje stečajnog postupka St-6721/2015-7",
"NazivStecajnogDuznika":"RAIN AIR d.o.o.",
"PrebivalisteStecajnogDuznika":"Savska 144/A, 10000, Zagreb",
"SjedisteStecajnogDuznika":"",
"OIBStecajnogDuznika":‌​"37144498637",
"Oglas‌​SeOdnosiNa":"Missing Oib",
"DatumObjave":"\/Date(1501106400000)\/",
"OibPrimatelja"‌​:"37144498637",
"Doku‌​ment":"e-oglasna.pra‌​vosudje.hr/sites/def‌​ault/files/ts-zg-st/‌​…;"
}

Thank you all for your replies, you have been very helpful and gave me an idea how to test. I tested with commenting out properties and I found out it's because of the special characters in Naziv otpravka ("Rješenje" and "stečajnog") which are luckily present only in that property.
I found that this solved the problem https://stackoverflow.com/a/12081747/6231007
client.Headers["Content-Type"] = "application/json; charset=utf-8";
client.UploadDataAsync(new Uri(url), "POST",
Encoding.UTF8.GetBytes(json));

Datetime is problematic. Make it nullable (DateTime?) and test with that. You'll probably get all other properties filled and datetime will stay null. If that's the problem, make sure your client sends datetime format that your model binder understands.

Deserializing rest client response from wordpress.org

I have a wordpress.org locally hosted on my pc.
I've installed a wordpress plugin called json-api which let you retrieve posts from your wordpress site.
I'm running the following code:
var client = new RestClient(BlogArticlesUrl);
var request = new RestRequest();
request.Timeout = 5000;
request.RequestFormat = DataFormat.Json;
request.Method = Method.GET;
request.AddParameter("json", "get_tag_posts");
request.AddParameter("slug", "featured");
request.AddParameter("count", "3");
var articles = client.Execute<List<BlogArticleModel>>(request);
After executing the code, in the variable articles I have the following:
Inside the Content there are few keys but I would only like to convert 'posts' to a model in c#
How do I acheive that?
EDIT:
I have found a solution using newtonsoft for dot net
Newtonsoft.Json.JsonConvert.DeserializeObject<BlogArticleResponse>(articles.Content);

In RestSharp, the Content is what gets deserialized. So, the type you pass into the .Execute<T> method must be the same structure as the response.
In your case, it will look something like this:
public class BlogArticleResponse
{
public string status { get; set; }
public int count { get; set; }
public int pages { get; set; }
public BlogTag tag { get; set; }
...
}
public class BlogTag
{
public int id { get; set; }
public string slug { get; set; }
public string title { get; set; }
public string description { get; set; }
...
}
You can then execute the request like this:
var result = client.Execute<BlogArticleResponse>(request);
For more information, have a look at the documentation.

how to pass a object which contains List<object> to web service method in C#?

I want to pass one JBSearchRequest object which contains List<JBCredential> to my asp.net web service. I am able to call this web service from SOAP UI and some other tools but when I'm trying to send request from my C# client code is giving problem.
My Web service class is
public List<JBCredential> JBCredentials{ get; set; }
public string codes { get; set; }
public string db { get; set; }
public string locale { get; set; }
public string location { get; set; }
public string mode { get; set; }
public string postcode { get; set; }
I've tried the following
test.JBSearchRequest s = new test.JBSearchRequest();
test.JBCredential jb = new test.JBCredential();
jb.code = "LNK";
jb.Username = "";
jb.Password = "";
/
s.query = "java";
s.mode = "mock_search";
s.JBCredentials.Add(jb);//I'm not getting add method
so I've tried like this
s.JBCredentials[0].code = jb.code;
s.JBCredentials[0].Password = jb.Password;
s.JBCredentials[0].Username = jb.Username;
and also I tried
List<JBCredential> ad=new List<JBCredential>();
ad.Add(jb);
s.JBCredentials=ad;
Please help me how to pass object which contains list when we are consuming web service.