public void ConfigureServices(IServiceCollection services) { services.AddHttpClient<AssemblyAiService> (); // Remaining code deleted for brevity. creating HTTP requests with HttpClient in C# - ZetCode Coming in 8.0.6, and available in nightly builds as of today, a not-as-pretty but hopefully pretty exciting new feature: system.net.httpClient. Example The following examples show how to use C# HttpClient. So, as you can see, through the entire method, we work with streams avoiding unnecessary memory usage with large strings. The GetAsync() method sends an http GET request to the specified url. So far I've tried: keeping httpClient's base address empty and passing the full/completed Uri to GetAsync () setting the base address to the URL up to the second forward slash and passing the rest as a string to GetAsync () いや、そりゃ当たり前なんだ . In order to download a file, we make an HTTP Get request, then read the response content into a memory stream which can be copied to a physical file. How to write unit tests for HttpClient using NUnit and Moq in C# In Main, we start a task and use DownloadPageAsync, an async method, as the target. HttpClient class provides a base class for sending/receiving the HTTP requests/responses from a URL. To customize serialization, you can pass in a JsonSerializerOptions object. and it is for GET - It wraps the new-to-Java-11 HttpClient with some convenience stuff for usage from Python. C# - Get and send JSON with HttpClient | MAKOLYTE Return The task object representing the asynchronous operation. I need to pass query string and path parameters to HttpClient GetAsync() method in .NET In the above code, we use the Create factory method to create a JsonContent instance, passing in an object to be serialised. Example 1: c# getasync response async Task<string> GetResponseString (string text) { var httpClient = new HttpClient (); var parameters = new Dictionary<string, string using (var client = new HttpClient ()) { } As per the blog post, if we dispose the HttpClient after every request it can keep the TCP connections open. 似乎是等待HTTPClient.GetAsync导致了错误。（非常确定线程被阻塞了。）因此，首先，我去掉了wait并添加了代码，以便在HTTPClient的返回任务未完成时延迟任务.
