本文主要是介绍如何用HttpClient请求带参数的服务，请求服务为某翻译API

直接上源码

1.添加using System.Net;的引用

using System.Net;

2.使用HttpClient发送请求

public static async void Fanyin_HttpClient(string fromString)
{
	Console.WriteLine($"Fanyin_HttpClient post");
	System.Net.Http.HttpClient httpClient = new System.Net.Http.HttpClient();

	string randnum = Random.Shared.Next(100).ToString();
	string sign = Encrypt.EncryptString(ApiConfig.ApiId + fromString + randnum + ApiConfig.ApiKey);
	var response = await httpClient.PostAsync(ApiConfig.Url, new FormUrlEncodedContent(new Dictionary<string, string>() {
		{ "q",fromString},
		{ "from",Language.中文简体},
		{ "to",Language.英语},
		{ "appid",ApiConfig.ApiId},
		{ "salt",randnum},
		{ "sign",sign}
	}));
	Console.WriteLine(await response.Content.ReadAsStringAsync());
}

3.输出