how to use httpclientFactory in desktop client app?

[softboy99]

//Microsoft.Extensions.Http和Microsoft.Extensions.DependencyInjection
ServiceCollection services = new ServiceCollection(); services.AddTransient(typeof(IDisposable), typeof(AuthenticatedParameterizedHttpClientHandler)); services.AddRefitClient<IApiService>(settings) .ConfigureHttpClient(c => { c.BaseAddress = new Uri("http://127.0.0.1/:8080" + "/iLab/"); c.DefaultRequestHeaders.Add("Content-Type", "application/json; charset=UTF-8"); }) .AddHttpMessageHandler<AuthenticatedParameterizedHttpClientHandler>() .SetHandlerLifetime(TimeSpan.FromMinutes(2)); var serviceProvider = services.BuildServiceProvider(); object httpClientFactory = serviceProvider.GetRequiredService(typeof(IApiService));

on the above last statement, the exception is thrown. says no type for 'AuthenticatedParameterizedHttpClientHandler' registered

[StephenCleary]

Your formatted code is:

ServiceCollection services = new ServiceCollection();
services.AddTransient(typeof(IDisposable), typeof(AuthenticatedParameterizedHttpClientHandler));
services.AddRefitClient<IApiService>(settings)
  .ConfigureHttpClient(c =>
  {
    c.BaseAddress = new Uri("http://127.0.0.1/:8080" + "/iLab/");
    c.DefaultRequestHeaders.Add("Content-Type", "application/json; charset=UTF-8");
  })
  .AddHttpMessageHandler<AuthenticatedParameterizedHttpClientHandler>()
  .SetHandlerLifetime(TimeSpan.FromMinutes(2));
var serviceProvider = services.BuildServiceProvider();
object httpClientFactory = serviceProvider.GetRequiredService(typeof(IApiService));

and as the exception message indicates, your problem is this line:

services.AddTransient(typeof(IDisposable), typeof(AuthenticatedParameterizedHttpClientHandler));

which should be:

services.AddTransient<AuthenticatedParameterizedHttpClientHandler>();