Making a Rest Api Call

21

Solved the problem.
Now I just need to figure out how to access the fields of my response Body

{"id":21,"userName":"fabiopires22","token":"eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1bmlxdWVfbmFtZSI6IjIxIiwibmJmIjoxNjA3NzgzODE5LCJleHAiOjE2MDgzODg2MTksImlhdCI6MTYwNzc4MzgxOX0.bfl3_6YVgcuFPbgZnD6rMjcNFaYdHdVjvArKTyKc__Q"}

 public static async Task<User> Login(string username, string password)
        {
            string responseBody;
            UserLogin userLogin = new UserLogin
            {
                Username = username,
                Password = password

            };

            User user = null;
            HttpResponseMessage response = await client.PostAsJsonAsync(
                "User/Login", userLogin);
            response.EnsureSuccessStatusCode();
            responseBody = await response.Content.ReadAsStringAsync();

            Debug.WriteLine("RESPONSE BODY: " + responseBody);

            //User user = JsonConvert.DeserializeObject<User>(responseBody);
            //Debug.WriteLine("A RESPOSTA FOI  :" + user.GetUsername());

            return user;
        }
22

Just deserialize the JSON, the code you commented out should do it :slight_smile:

23

If my credentials are wrong I want to return a null user. Something like this

public static async Task<User> Login(string username, string password)
        {
            string responseBody;
            UserLogin userLogin = new UserLogin
            {
                Username = username,
                Password = password

            };

            User user = null;
            HttpResponseMessage response = await client.PostAsJsonAsync(
                "User/Login", userLogin);
            response.EnsureSuccessStatusCode();
            

            Debug.WriteLine("RESPONSE : " + response);

            //if (response.StatusCode == 200)
           // {
                responseBody = await response.Content.ReadAsStringAsync();
                user = JsonConvert.DeserializeObject<User>(responseBody);
          //  }
            
            Debug.WriteLine("A RESPOSTA FOI  :" + user.UserName);

            return user;
        }

Should I delete

  response.EnsureSuccessStatusCode();
24

When ever I do an API like this I always have it return a Status object, something like:

{
ā€œidā€: 123,
ā€œuserā€: ā€œusernameā€,
ā€œstatusā€: {
ā€œcodeā€: 0,
ā€œmessageā€: ā€œBad user credentailsā€
}
}

25

Can I replace UserLogin by a generic object?

   public static class Communication
    {
        private static readonly HttpClient client = new HttpClient();

        public static async Task<User> Login(string username, string password)
        {
            User user = null;
           
            try 
            { 
                string responseBody;
                UserLogin userLogin = new UserLogin
                {
                    Username = username,
                    Password = password

                };

                HttpResponseMessage response = await client.PostAsJsonAsync("User/Login", userLogin);
                response.EnsureSuccessStatusCode();
                responseBody = await response.Content.ReadAsStringAsync();
                user = JsonConvert.DeserializeObject<User>(responseBody);
            }

            catch (Exception ex)
            {
                Debug.WriteLine("\tERROR {0}", ex.Message);
            }

            return user;
        }

        public static void Initialize()
        {
            client.BaseAddress = new Uri("http://localhost:5000/");
            client.DefaultRequestHeaders.Accept.Clear();
            client.DefaultRequestHeaders.Accept.Add(
                new MediaTypeWithQualityHeaderValue("application/json"));

        }
       


    }

    public class UserLogin{
        public string Username { get; set; }
        public string Password { get; set; }
        }
26

Not sure what you mean by generic object here, but C# has a dynamic return type you can try https://docs.microsoft.com/en-us/dotnet/csharp/programming-guide/types/using-type-dynamic

27

I will try to explain in a JavaScript style. For example in JavaScript I can create a JsonObject. I intend to do the same here so I can delete my UserLogin class

28

Basically you need a type that can accept a JSON no matter what data it has? Thatā€™s what the dynamic type I linked to is used for

29

So I have to do something like this?

 dynamic userLogin = new object
                {
                    Username = username,
                    Password = password

                };
30

No you canā€™t insert random properties into the object class type. Here are some examples with JSON and dynamic https://weblog.west-wind.com/posts/2012/aug/30/using-jsonnet-for-dynamic-json-parsing

31

IĀ“ve done this

var jsonObject = new JObject();
                dynamic userLogin = jsonObject;
                userLogin.Username = username;
                userLogin.Password = password;

but now I am getting this error

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