如何在c#中使用HttpClient GetAsync方法传递请求内容

HttpClient client = new HttpClient();

string url = "https://example.com/api/resource?param1=value1&param2=value2";

HttpResponseMessage response = await client.GetAsync(url);

if (response.IsSuccessStatusCode)
{
    // 请求成功，处理响应数据
    string responseBody = await response.Content.ReadAsStringAsync();
    // 对响应数据进行处理
}
else
{
    // 请求失败，处理错误
    string errorMessage = $"请求失败，状态码：{response.StatusCode}";
    // 处理错误信息
}

HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Get, url);
request.Headers.Add("HeaderName", "HeaderValue");
HttpResponseMessage response = await client.SendAsync(request);

string jsonBody = "{\"key\":\"value\"}";
HttpContent content = new StringContent(jsonBody, Encoding.UTF8, "application/json");
HttpResponseMessage response = await client.PostAsync(url, content);