Calling a rest api with username and password - how to

Question

I am new to rest api s and calling them via  NET  I have an api  https   sub domain com api operations param value amp param2 value  The notes for the api say that to authorize I need to use the basic access authentication - how do I do that   I currently have this code           WebRequest req   WebRequest Create   https   sub domain com api operations param value amp param2 value            req Method    GET             req Credentials   new NetworkCredential  username    password            HttpWebResponse resp   req GetResponse   as HttpWebResponse    However I get a 401 unauthorized error   What am I missing  how do I form api calls using the basic access auth

User · Answer

You can also use the RestSharp library for example  var userName    myuser   var password    mypassword   var host    170 170 170 170 333   var client   new RestClient  https       host     method1                client Authenticator   new HttpBasicAuthenticator userName  password               var request   new RestRequest Method POST    request AddHeader  Accept    application json    request AddHeader  Cache-Control    no-cache    request AddHeader  Content-Type    application json                request AddParameter  application json       ParameterType RequestBody   IRestResponse response   client Execute request

User · Answer

Here is the solution for Rest API   class Program       static void Main string   args                BaseClient clientbase   new BaseClient  https   website com api v2     username    password            BaseResponse response   new BaseResponse            BaseResponse response   clientbase GetCallV2Async  Candidate   Result              public async Task lt BaseResponse gt  GetCallAsync string endpoint                try                       HttpResponseMessage response   await client GetAsync endpoint        ConfigureAwait false               if  response IsSuccessStatusCode                                baseresponse ResponseMessage   await response Content ReadAsStringAsync                    baseresponse StatusCode    int response StatusCode                            else                               baseresponse ResponseMessage   await response Content ReadAsStringAsync                    baseresponse StatusCode    int response StatusCode                            return baseresponse                    catch  Exception ex                        baseresponse StatusCode   0              baseresponse ResponseMessage    ex Message    ex InnerException ToString                       return baseresponse            public class BaseResponse       public int StatusCode   get  set        public string ResponseMessage   get  set       public class BaseClient       readonly HttpClient client      readonly BaseResponse baseresponse       public BaseClient string baseAddress  string username  string password                HttpClientHandler handler   new HttpClientHandler                         Proxy   new WebProxy  http   127 0 0 1 8888                UseProxy   false                      client   new HttpClient handler           client BaseAddress   new Uri baseAddress           client DefaultRequestHeaders Accept Clear            client DefaultRequestHeaders Accept Add new MediaTypeWithQualityHeaderValue  application json             var byteArray   Encoding ASCII GetBytes username         password            client DefaultRequestHeaders Authorization   new System Net Http Headers AuthenticationHeaderValue  Basic   Convert ToBase64String byteArray             baseresponse   new BaseResponse

User · Answer

If the API says to use HTTP Basic authentication  then you need to add an Authorization header to your request   I d alter your code to look like this       WebRequest req   WebRequest Create   https   sub domain com api operations param value amp param2 value        req Method    GET       req Headers  Authorization      Basic     Convert ToBase64String Encoding Default GetBytes  username password           req Credentials   new NetworkCredential  username    password        HttpWebResponse resp   req GetResponse   as HttpWebResponse    Replacing  username  and  password  with the correct values  of course

[c#] Calling a rest api with username and password - how to

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