Error facing on communication between asp.net webapi server and angular2 application











up vote
0
down vote

favorite












I am facing the CORS related issue when i try to connect my angular2 application and asp.net webapi application.



Error:-
register:1 Access to XMLHttpRequest at 'http://localhost:49457/api/UserDetails' from origin 'http://localhost:4200' has been blocked by CORS policy: The 'Access-Control-Allow-Origin' header contains multiple values 'http://localhost:4200, http://localhost:4200', but only one is allowed.



Here is my code for connecting for calling asp.net webapi url through my angular2 app:-



User.service.ts



GetUser(userobj:user):Observable<User>  
{

return this.http.get<User>(`http://localhost:49457/api/UserDetails`,{responseType:"text"})
.subscribe(
function(response)
{
console.log("user details retreived successfully");
},
function(error)
{
console.log(error);
});
}


This is my code for asp.net webapi,



 public class UserDetailsController : ApiController
{
private sampledbEntities dbentity = new sampledbEntities();
// GET api/<controller>
public IQueryable<Userdetail> GetUserdetails()
{
return dbentity.userdetails;
}
}


Actually when i run my asp.netwebapi server it is retrieving data correctly through browser.And also i have enabled
CORS in webapiconfig.cs,



void Register(HttpConfiguration config)
{
var corsAttr = new EnableCorsAttribute("http://localhost:4200", "*", "*");
config.EnableCors(corsAttr);
}


in web.config.cs,



 <httpProtocol>  
<customHeaders>
<add name="Access-Control-Allow-Origin" value="http://localhost:4200" />
<add name="Access-Control-Allow-Headers" value="Origin, Content-Type, X-Auth-Token" />
<add name="Access-Control-Allow-Methods" value="GET, POST, PUT, DELETE, OPTIONS" />
</customHeaders>
</httpProtocol>


After enabling CORS in Webapiconfig.cs and web.config also i am facing the same error.



Please clarify how do i come out of this error,










share|improve this question


























    up vote
    0
    down vote

    favorite












    I am facing the CORS related issue when i try to connect my angular2 application and asp.net webapi application.



    Error:-
    register:1 Access to XMLHttpRequest at 'http://localhost:49457/api/UserDetails' from origin 'http://localhost:4200' has been blocked by CORS policy: The 'Access-Control-Allow-Origin' header contains multiple values 'http://localhost:4200, http://localhost:4200', but only one is allowed.



    Here is my code for connecting for calling asp.net webapi url through my angular2 app:-



    User.service.ts



    GetUser(userobj:user):Observable<User>  
    {

    return this.http.get<User>(`http://localhost:49457/api/UserDetails`,{responseType:"text"})
    .subscribe(
    function(response)
    {
    console.log("user details retreived successfully");
    },
    function(error)
    {
    console.log(error);
    });
    }


    This is my code for asp.net webapi,



     public class UserDetailsController : ApiController
    {
    private sampledbEntities dbentity = new sampledbEntities();
    // GET api/<controller>
    public IQueryable<Userdetail> GetUserdetails()
    {
    return dbentity.userdetails;
    }
    }


    Actually when i run my asp.netwebapi server it is retrieving data correctly through browser.And also i have enabled
    CORS in webapiconfig.cs,



    void Register(HttpConfiguration config)
    {
    var corsAttr = new EnableCorsAttribute("http://localhost:4200", "*", "*");
    config.EnableCors(corsAttr);
    }


    in web.config.cs,



     <httpProtocol>  
    <customHeaders>
    <add name="Access-Control-Allow-Origin" value="http://localhost:4200" />
    <add name="Access-Control-Allow-Headers" value="Origin, Content-Type, X-Auth-Token" />
    <add name="Access-Control-Allow-Methods" value="GET, POST, PUT, DELETE, OPTIONS" />
    </customHeaders>
    </httpProtocol>


    After enabling CORS in Webapiconfig.cs and web.config also i am facing the same error.



    Please clarify how do i come out of this error,










    share|improve this question
























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      I am facing the CORS related issue when i try to connect my angular2 application and asp.net webapi application.



      Error:-
      register:1 Access to XMLHttpRequest at 'http://localhost:49457/api/UserDetails' from origin 'http://localhost:4200' has been blocked by CORS policy: The 'Access-Control-Allow-Origin' header contains multiple values 'http://localhost:4200, http://localhost:4200', but only one is allowed.



      Here is my code for connecting for calling asp.net webapi url through my angular2 app:-



      User.service.ts



      GetUser(userobj:user):Observable<User>  
      {

      return this.http.get<User>(`http://localhost:49457/api/UserDetails`,{responseType:"text"})
      .subscribe(
      function(response)
      {
      console.log("user details retreived successfully");
      },
      function(error)
      {
      console.log(error);
      });
      }


      This is my code for asp.net webapi,



       public class UserDetailsController : ApiController
      {
      private sampledbEntities dbentity = new sampledbEntities();
      // GET api/<controller>
      public IQueryable<Userdetail> GetUserdetails()
      {
      return dbentity.userdetails;
      }
      }


      Actually when i run my asp.netwebapi server it is retrieving data correctly through browser.And also i have enabled
      CORS in webapiconfig.cs,



      void Register(HttpConfiguration config)
      {
      var corsAttr = new EnableCorsAttribute("http://localhost:4200", "*", "*");
      config.EnableCors(corsAttr);
      }


      in web.config.cs,



       <httpProtocol>  
      <customHeaders>
      <add name="Access-Control-Allow-Origin" value="http://localhost:4200" />
      <add name="Access-Control-Allow-Headers" value="Origin, Content-Type, X-Auth-Token" />
      <add name="Access-Control-Allow-Methods" value="GET, POST, PUT, DELETE, OPTIONS" />
      </customHeaders>
      </httpProtocol>


      After enabling CORS in Webapiconfig.cs and web.config also i am facing the same error.



      Please clarify how do i come out of this error,










      share|improve this question













      I am facing the CORS related issue when i try to connect my angular2 application and asp.net webapi application.



      Error:-
      register:1 Access to XMLHttpRequest at 'http://localhost:49457/api/UserDetails' from origin 'http://localhost:4200' has been blocked by CORS policy: The 'Access-Control-Allow-Origin' header contains multiple values 'http://localhost:4200, http://localhost:4200', but only one is allowed.



      Here is my code for connecting for calling asp.net webapi url through my angular2 app:-



      User.service.ts



      GetUser(userobj:user):Observable<User>  
      {

      return this.http.get<User>(`http://localhost:49457/api/UserDetails`,{responseType:"text"})
      .subscribe(
      function(response)
      {
      console.log("user details retreived successfully");
      },
      function(error)
      {
      console.log(error);
      });
      }


      This is my code for asp.net webapi,



       public class UserDetailsController : ApiController
      {
      private sampledbEntities dbentity = new sampledbEntities();
      // GET api/<controller>
      public IQueryable<Userdetail> GetUserdetails()
      {
      return dbentity.userdetails;
      }
      }


      Actually when i run my asp.netwebapi server it is retrieving data correctly through browser.And also i have enabled
      CORS in webapiconfig.cs,



      void Register(HttpConfiguration config)
      {
      var corsAttr = new EnableCorsAttribute("http://localhost:4200", "*", "*");
      config.EnableCors(corsAttr);
      }


      in web.config.cs,



       <httpProtocol>  
      <customHeaders>
      <add name="Access-Control-Allow-Origin" value="http://localhost:4200" />
      <add name="Access-Control-Allow-Headers" value="Origin, Content-Type, X-Auth-Token" />
      <add name="Access-Control-Allow-Methods" value="GET, POST, PUT, DELETE, OPTIONS" />
      </customHeaders>
      </httpProtocol>


      After enabling CORS in Webapiconfig.cs and web.config also i am facing the same error.



      Please clarify how do i come out of this error,







      asp.net-web-api angular2-services angular4-httpclient






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 12 at 4:11









      rajula

      53




      53
























          1 Answer
          1






          active

          oldest

          votes

















          up vote
          0
          down vote













          Replace http://localhost:4200 with "*" from EnableCorsAttribute method.



          void Register(HttpConfiguration config)
          {
          var corsAttr = new EnableCorsAttribute("http://localhost:4200", "*", "*");
          config.EnableCors(corsAttr);
          }


          and remove httpProtocol configuration settings from web.config.






          share|improve this answer





















          • i have done above changes also, then also the same error
            – rajula
            Nov 13 at 12:06










          • Are you passing anything else in header with request from angular application?
            – Hardik
            Nov 14 at 3:37











          Your Answer






          StackExchange.ifUsing("editor", function () {
          StackExchange.using("externalEditor", function () {
          StackExchange.using("snippets", function () {
          StackExchange.snippets.init();
          });
          });
          }, "code-snippets");

          StackExchange.ready(function() {
          var channelOptions = {
          tags: "".split(" "),
          id: "1"
          };
          initTagRenderer("".split(" "), "".split(" "), channelOptions);

          StackExchange.using("externalEditor", function() {
          // Have to fire editor after snippets, if snippets enabled
          if (StackExchange.settings.snippets.snippetsEnabled) {
          StackExchange.using("snippets", function() {
          createEditor();
          });
          }
          else {
          createEditor();
          }
          });

          function createEditor() {
          StackExchange.prepareEditor({
          heartbeatType: 'answer',
          convertImagesToLinks: true,
          noModals: true,
          showLowRepImageUploadWarning: true,
          reputationToPostImages: 10,
          bindNavPrevention: true,
          postfix: "",
          imageUploader: {
          brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
          contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
          allowUrls: true
          },
          onDemand: true,
          discardSelector: ".discard-answer"
          ,immediatelyShowMarkdownHelp:true
          });


          }
          });














          draft saved

          draft discarded


















          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53255866%2ferror-facing-on-communication-between-asp-net-webapi-server-and-angular2-applica%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown

























          1 Answer
          1






          active

          oldest

          votes








          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes








          up vote
          0
          down vote













          Replace http://localhost:4200 with "*" from EnableCorsAttribute method.



          void Register(HttpConfiguration config)
          {
          var corsAttr = new EnableCorsAttribute("http://localhost:4200", "*", "*");
          config.EnableCors(corsAttr);
          }


          and remove httpProtocol configuration settings from web.config.






          share|improve this answer





















          • i have done above changes also, then also the same error
            – rajula
            Nov 13 at 12:06










          • Are you passing anything else in header with request from angular application?
            – Hardik
            Nov 14 at 3:37















          up vote
          0
          down vote













          Replace http://localhost:4200 with "*" from EnableCorsAttribute method.



          void Register(HttpConfiguration config)
          {
          var corsAttr = new EnableCorsAttribute("http://localhost:4200", "*", "*");
          config.EnableCors(corsAttr);
          }


          and remove httpProtocol configuration settings from web.config.






          share|improve this answer





















          • i have done above changes also, then also the same error
            – rajula
            Nov 13 at 12:06










          • Are you passing anything else in header with request from angular application?
            – Hardik
            Nov 14 at 3:37













          up vote
          0
          down vote










          up vote
          0
          down vote









          Replace http://localhost:4200 with "*" from EnableCorsAttribute method.



          void Register(HttpConfiguration config)
          {
          var corsAttr = new EnableCorsAttribute("http://localhost:4200", "*", "*");
          config.EnableCors(corsAttr);
          }


          and remove httpProtocol configuration settings from web.config.






          share|improve this answer












          Replace http://localhost:4200 with "*" from EnableCorsAttribute method.



          void Register(HttpConfiguration config)
          {
          var corsAttr = new EnableCorsAttribute("http://localhost:4200", "*", "*");
          config.EnableCors(corsAttr);
          }


          and remove httpProtocol configuration settings from web.config.







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Nov 12 at 4:35









          Hardik

          1,3211219




          1,3211219












          • i have done above changes also, then also the same error
            – rajula
            Nov 13 at 12:06










          • Are you passing anything else in header with request from angular application?
            – Hardik
            Nov 14 at 3:37


















          • i have done above changes also, then also the same error
            – rajula
            Nov 13 at 12:06










          • Are you passing anything else in header with request from angular application?
            – Hardik
            Nov 14 at 3:37
















          i have done above changes also, then also the same error
          – rajula
          Nov 13 at 12:06




          i have done above changes also, then also the same error
          – rajula
          Nov 13 at 12:06












          Are you passing anything else in header with request from angular application?
          – Hardik
          Nov 14 at 3:37




          Are you passing anything else in header with request from angular application?
          – Hardik
          Nov 14 at 3:37


















          draft saved

          draft discarded




















































          Thanks for contributing an answer to Stack Overflow!


          • Please be sure to answer the question. Provide details and share your research!

          But avoid



          • Asking for help, clarification, or responding to other answers.

          • Making statements based on opinion; back them up with references or personal experience.


          To learn more, see our tips on writing great answers.





          Some of your past answers have not been well-received, and you're in danger of being blocked from answering.


          Please pay close attention to the following guidance:


          • Please be sure to answer the question. Provide details and share your research!

          But avoid



          • Asking for help, clarification, or responding to other answers.

          • Making statements based on opinion; back them up with references or personal experience.


          To learn more, see our tips on writing great answers.




          draft saved


          draft discarded














          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53255866%2ferror-facing-on-communication-between-asp-net-webapi-server-and-angular2-applica%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown





















































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown

































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown







          Popular posts from this blog

          Bressuire

          Vorschmack

          Quarantine