Connection to API using FrameWork 4.8

Question

Good morning,

I'm trying to connect to an API, but the example provided uses .net 6.0, but my project is using FrameWork 4.8, for example, I don't have the Text.Json library and I believe I'll need another one to get the answer.

  request.Content = new StringContent("grant_type=client_credentials", Encoding.UTF8, "application/json"); //CONTENT-TYPE header
         Task<HttpResponseMessage> response = client.SendAsync(request);
         return await response.Result.Content.ReadFromJsonAsync<Token>(OpcoesDesserializarJson);
private static JsonSerializerOptions OpcoesDesserializarJson
     => new() { PropertyNameCaseInsensitive = true };

Any suggestion?

Answer 1

see docs:

https://learn.microsoft.com/en-us/aspnet/web-api/overview/advanced/calling-a-web-api-from-a-net-client

note: the 4.8 framework was designed around soap and xml, but has added json support.

Answer 2

Hi @Fábio Freitas,

I don't have the Text.Json library and I believe I'll need another one to get the answer.

You can use NuGet Package Manager to install the Web API Client Libraries package.

• Microsoft.AspNet.WebApi.Client
• Newtonsoft.Json

Refer to the code below:

RequestWorkorder p = new RequestWorkorder()
{
    Program = "4",
    Workorder = "D"
};
using (var client = new HttpClient())
{
    client.BaseAddress = new Uri("https://localhost:****/");
    client.DefaultRequestHeaders.Accept.Clear();
    client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
    //GET Method
    HttpResponseMessage response = await  client.GetAsync("api/Values");
    if (response.IsSuccessStatusCode)
    {
        List<RequestWorkorder> requestWorkorder = null;
        requestWorkorder = await response.Content.ReadAsAsync<List<RequestWorkorder>>();
        Console.WriteLine("Id:{0}\tName:{1}", requestWorkorder[0].Program, requestWorkorder[0].Workorder);

    }
    //POST Method
    HttpResponseMessage response1 = await client.PostAsJsonAsync("api/Values", p);

    if (response1.IsSuccessStatusCode)
    {

       
        Console.WriteLine("Success");
    }
    else
    {
        Console.WriteLine("Internal server Error");
    }
}

https://learn.microsoft.com/en-us/aspnet/web-api/overview/advanced/calling-a-web-api-from-a-net-client

Best regards,
Lan Huang

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