HttpClient is the main way to call REST APIs from C#.
🚀 Basic Usage
1
2
3
4
5
6
7
| using System.Net.Http;
using System.Threading.Tasks;
var client = new HttpClient();
HttpResponseMessage response = await client.GetAsync("https://api.github.com/zen");
string content = await response.Content.ReadAsStringAsync();
Console.WriteLine(content);
|
📝 POST Example
1
2
| var payload = new StringContent("{\"name\":\"Alice\"}", Encoding.UTF8, "application/json");
var response = await client.PostAsync("https://api.example.com/users", payload);
|
⚠️ Tips
- Set headers as needed:
1
| client.DefaultRequestHeaders.UserAgent.ParseAdd("MyApp/1.0");
|
- For best practice, reuse
HttpClient or use IHttpClientFactory in ASP.NET Core.
📦 Deserialize JSON
1
2
3
| using System.Text.Json;
var user = JsonSerializer.Deserialize<User>(content);
|
Next: JSON serialization and deserialization in depth!
