In my ASP.NET Core-6 Web API, I am given a third party API to consume and then return the account details.

api:

https://api.thirdpartycompany.com:2233/UserAccount/api/AccountDetail?accountNumber=112123412

Headers:

X-GivenID:Given2211
X-GivenName:Givenyou
X-GivenPassword:Given@llcool

Then JSON Result is shown below:

{
  "AccountName": "string",
  "CurrentBalance": 0,
  "AvailableBalance": 0,
  "Currency": "string"
}

So far, I have done this:

BalanceEnquiryResponse:

public class BalanceEnquiryResponse
{
    public string Response
    {
        get;
        set;
    }

    public bool IsSuccessful
    {
        get;
        set;
    }

    public List<BalanceList> AccountBalances
    {
        get;
        set;
    }
}

BalanceList:

public class BalanceList
{
    public string AccountNumber
    {
        get;
        set;
    }

    public decimal CurrentBalance
    {
        get;
        set;
    }

    public decimal AvailableBalance
    {
        get;
        set;
    }

    public string Currency
    {
        get;
        set;
    }
}

Then the service is shown below.

IDataService:

public interface IDataService
{
    BalanceEnquiryResponse GetAccountBalance(string accountNo);
}

DataService:

public class DataService : IDataService
{
    private readonly ILogger<DataService> _logger;
    private readonly HttpClient _myClient;
    public DataService(ILogger<DataService> logger, HttpClient myClient)
    {
        _logger = logger;
        _myClient = myClient;
    }

    private void PrepareAPIHeaders()
    {
        _myClient.DefaultRequestHeaders.Add("X-GivenID", "Given2211");
        _myClient.DefaultRequestHeaders.Add("X-GivenName", "Givenyou");
        _myClient.DefaultRequestHeaders.Add("X-GivenPassword", "Given@llcool");
        _myClient.DefaultRequestHeaders.TryAddWithoutValidation("Content-Type", "application/json; charset=utf-8");
        _myClient.DefaultRequestHeaders.TryAddWithoutValidation("Accept", "application/json; charset=utf-8");
    }

    public BalanceEnquiryResponse GetAccountBalance(string accountNo)
    {
        _logger.LogInformation("Accessing Own Account");
        var url = $"https://api.thirdpartycompany.com:2233/UserAccount/api/AccountDetail?accountNumber={accountNo}";
        var responseResults = new BalanceEnquiryResponse();
        var response = await _myClient.GetAsync(url);
        return response;
    }
}

Using HttpClient, I want to return a response in connection with the url, headers and BalanceEnquiryResponse

For the first time I am trying to consume third party API using HttpClient, and I'm following this Consume Web API in .NET using HttpClient

So far, I got this error:

Cannot implicitly convert type 'System.Net.Http.HttpResponseMessage' to 'BalanceEnquiryResponse'

and response is highlighted in return response

How do I correct the error and also achieve my goal in returning the response.

Thanks.

CodePudding user response：

Based on your class, these small changes should put you in the position to fix the rest:

public class DataService : IDataService
{
    private readonly ILogger<DataService> _logger;
    private readonly HttpClient _myClient;
    public DataService(ILogger<DataService> logger, HttpClient myClient)
    {
        _logger = logger;
        _myClient = myClient;
        PrepareAPIHeaders(); // Actually apply the headers!
    }

    private void PrepareAPIHeaders()
    {
        _myClient.DefaultRequestHeaders.Add("X-GivenID", "Given2211");
        _myClient.DefaultRequestHeaders.Add("X-GivenName", "Givenyou");
        _myClient.DefaultRequestHeaders.Add("X-GivenPassword", "Given@llcool");
        _myClient.DefaultRequestHeaders.TryAddWithoutValidation("Content-Type", "application/json; charset=utf-8");
        _myClient.DefaultRequestHeaders.TryAddWithoutValidation("Accept", "application/json; charset=utf-8");
    }

    // If you want to use async API, you need to go async all the way.
    // So make this Method async, too!
    public async Task<BalanceEnquiryResponse> GetAccountBalance(string accountNo)
    {
        _logger.LogInformation("Accessing Own Account");
        var url = $"https://api.thirdpartycompany.com:2233/UserAccount/api/AccountDetail?accountNumber={accountNo}";

        var response = await _myClient.GetAsync(url);
        // vv Get your payload out of the Http Response.
        var responseResults = await response.Content.ReadAsAsync<BalanceEnquiryResponse>();
        return responseResults;
    }
}