c# - Retrieving JSON from a web site - What am I missing? -


in visual studio/ c# retreiving json url: http://hotell.difi.no/api/json/brreg/enhetsregisteret?query=knart

when trying display of entries in messagebox, nothing displayed.

can suggest need?

using system; using system.collections.generic; using system.componentmodel; using system.data; using system.drawing; using system.linq; using system.text; using system.windows.forms; using system.data.sql; using system.data.sqlclient; using system.net; // webclient/ json via http using system.io; using system.web.script.serialization; // json.net using newtonsoft.json.linq; using newtonsoft.json; //json.net   namespace json_test { public partial class form1 : form {     public form1()     {         initializecomponent();      }     public class entry     {         public string nkode2 { get; set; }         public string nkode1 { get; set; }         public string tlf_mobil { get; set; }         public string organisasjonsform { get; set; }         public string ppoststed { get; set; }         public string tvangsavvikling { get; set; }         public string forretningsadr { get; set; }         public string regifriv { get; set; }         public string orgnr { get; set; }         public string forradrland { get; set; }         public string stiftelsesdato { get; set; }         public string forradrkommnr { get; set; }         public string konkurs { get; set; }         public string regdato { get; set; }         public string avvikling { get; set; }         public string regifr { get; set; }         public string forradrpoststed { get; set; }         public string ppostland { get; set; }         public string forradrkommnavn { get; set; }         public string forradrpostnr { get; set; }         public string navn { get; set; }         public string regnskap { get; set; }         public string url { get; set; }         public string sektorkode { get; set; }         public string regimva { get; set; }         public string ppostnr { get; set; }         public string postadresse { get; set; }         public string nkode3 { get; set; }         public string regiaa { get; set; }         public string tlf { get; set; }     }      public class rootobject     {         public list<entry> entries { get; set; }         public int page { get; set; }         public int pages { get; set; }         public int posts { get; set; }     }     private static t _download_serialized_json_data<t>(string url) t : new()     {         using (var w = new webclient())         {             var json_data = string.empty;             // attempt download json data string             try             {                 json_data = w.downloadstring(url);             }             catch (exception) { }             // if string json data not empty, deserialize class , return instance              return !string.isnullorempty(json_data) ? jsonconvert.deserializeobject<t>(json_data) : new t();         }     }       private void button1_click_1(object sender, eventargs e)     {         string querystring = textbox1.text;         var url = "http://hotell.difi.no/api/json/brreg/enhetsregisteret?query=" + querystring;         var brreg = _download_serialized_json_data<entry>(url);          string orgnr = brreg.orgnr;         messagebox.show(url + "\r\n" + "result: " + orgnr);     } }

}

it doesn't entry class matches json being returned.

the json contains array of entry called "entries" , few other properties, not bare entry. try

_download_serialized_json_data<rootobject>(url);

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