我如何从C＃的Json中的Api获取数据

Question

How i can Fetch data from an Json Api like that:

https://jsonplaceholder.typicode.com/todos/1

responseBody.title

i Already have this:

HttpResponseMessage response = await 
client.GetAsync("https://jsonplaceholder.typicode.com/todos/1");
response.EnsureSuccessStatusCode();
string responseBody = await response.Content.ReadAsStringAsync();

Answer 1

You can use Newtonsoft.Json library for working with JSON data. You can use serialization/deserialization or LINQ to JSON methods

For example based on your code:

HttpResponseMessage response = await client.GetAsync("https://jsonplaceholder.typicode.com/todos/1");
string responseBody = await response.Content.ReadAsStringAsync();

// LINQ to JSON method
JObject jsonObject = JObject.Parse(responseBody);
int userId = int.Parse(jsonObject["userId"].ToString());
int id = int.Parse(jsonObject["id"].ToString());
string title = jsonObject["title"].ToString();
bool completed = bool.Parse(jsonObject["completed"].ToString());