Call WebApi [Answered]RSS

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  techviju

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  72 Posts

  Call WebApi

  Oct 10, 2019 07:21 AM|techviju|LINK

  How to call token based web API for authentication?

  Vijay Kumar.
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  Fei Han - MS...

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  Microsoft

  Re: Call WebApi

  Oct 10, 2019 08:15 AM|Fei Han - MSFT|LINK

  Hi Vijay,

  techviju

  How to call token based web API for authentication?

  Normally, you need to make request to get/acquire token first, then make request and pass the token that you got in request header to access resources.

  With Regards,

  Fei Han

  
  MSDN Community Support
  Please remember to "Mark as Answer" the responses that resolved your issue.
  
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  techviju

  Member

  208 Points

  72 Posts

  Re: Call WebApi

  Oct 10, 2019 11:47 AM|techviju|LINK

  Thank you for your replay..I get that.

  using System;
  using System.Collections.Generic;
  using System.Net.Http;
  using System.Net.Http.Formatting;
  
  
  namespace ConsoleApp1
  {
      class Program
      {
          static void Main(string[] args)
          {
              string baseAddress = "http://localhost:4312";
              Token token = new Token();
              using (var client = new HttpClient())
              {
                  var form = new Dictionary<string, string>
                 {
                     {"grant_type", "password"},
                     {"username", "admin"},
                     {"password", "admin"},
                 };
                  var tokenResponse = client.PostAsync(baseAddress + "/token", new FormUrlEncodedContent(form)).Result;
                  //var token = tokenResponse.Content.ReadAsStringAsync().Result;
                  token = tokenResponse.Content.ReadAsAsync<Token>(new[] { new JsonMediaTypeFormatter() }).Result;
                  if (string.IsNullOrEmpty(token.Error))
                  {
                      Console.WriteLine("Token issued is: {0}", token.AccessToken);
                      Console.WriteLine("Token Type: {0}", token.TokenType);
                  }
                  else
                  {
                      Console.WriteLine("Error : {0}", token.Error);
                  }
              }
  
              // Next Request 
              using (HttpClient httpClient = new HttpClient())
              {
                  httpClient.BaseAddress = new Uri(baseAddress);
                  //httpClient1.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("bearer", token.AccessToken);
                  httpClient.DefaultRequestHeaders.Add("Authorization", String.Format("Bearer {0}", token.AccessToken));
                  HttpResponseMessage response = httpClient.GetAsync("api/TestMethod").Result;
                  if (response.IsSuccessStatusCode)
                  {
                      System.Console.WriteLine("Success");
                  }
                  string message = response.Content.ReadAsStringAsync().Result;
                  System.Console.WriteLine("URL responese : " + message);
              }
  
              Console.Read();
          }
      }
  }
  

  Regards,

  Vijay Kumar

  Vijay Kumar.
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  techviju

  Member

  208 Points

  72 Posts

  Re: Call WebApi

  Oct 10, 2019 11:54 AM|techviju|LINK

  And Below is token Class

  class Token
      {
          [JsonProperty("access_token")]
          public string AccessToken { get; set; }
          [JsonProperty("token_type")]
          public string TokenType { get; set; }
          [JsonProperty("expires_in")]
          public int ExpiresIn { get; set; }
          [JsonProperty("refresh_token")]
          public string RefreshToken { get; set; }
          [JsonProperty("error")]
          public string Error { get; set; }
      }

  Vijay Kumar.