How to re-use this API Client that is based on the Ultimate RestSharp Client in ASP.NET and C#?

Question

I am a new C# developer and I am trying to re-use the API client that I built based on the Ultimate RestSharp Client in ASP.NET and C# explained in this post. I was able to create all the classes and prerequisites mentioned in the article, but I am unable to use the client class right now over some places in my application

Here's the client code:

public class UsersClient : BaseClient
{
    public UsersClient (ICacheService cache, IDeserializer serializer, IErrorLogger errorLogger)
        : base(cache, serializer, errorLogger, "http://yourBaseUrl.com") { }

    public User GetByID(int id)
    {
        RestRequest request = new RestRequest("users/{id}", Method.GET);
        request.AddUrlSegment("id", id.ToString());
        return GetFromCache<User>(request, "User" + id.ToString());
    }

}

Now, when I am trying to call the GetById method in the code-behind of some ASP.NET pages, I could not see or access this method and I don't know why. Here's the line of code I am using to access the method:

string userId = "JohnA";
var user = UsersClient.GetById(userId);

So how can I access this method? or how can I use the API client over my application?

UPDATE:

I am still struggling with this API client. Could you please show me how I can use it and how I can apply dependency injection?

Answer 1

You cannot access non-static method like that. First you have to initialize UsersClient object.

ICacheService cache = //initialize cache here
IDeserializer deserializer = //initialize deserializer here
IErrorLogger errorLogger = //initialize errorLogger here
UsersClient usersClient = new UsersClient(cache, deserializer, errorLogger); 

string userId = "JohnA"; 
var user = usersClient.GetById(userId);

I would recommend to learn about design patterns like dependency injection and inversion of control (already used, not sure if it was intended or unconsciously) and use them in this case.