使用 POST /api/Products

{  
  "name": "Laptop",  
  "price": 3000  
}

客戶端：使用控制臺應用程序的示例（您可以將其擴展到 Web 或桌面應用程序）

創建控制臺應用程序以與 API 交互。

1. 創建控制臺應用程序

dotnet new console -n ClientApp  
cd ClientApp

2. 安裝 HttpClient

添加包以與 Web API 交互：System.Net.Http.Json

dotnet add package System.Net.Http.Json

3. 創建客戶端代碼以與 API 交互

在 中，編寫代碼以調用 API：Program.cs

// See https://aka.ms/new-console-template for more information
using System.Net.Http.Json;
using System;
using System.Net.Http;
using System.Net.Http.Json;
using System.Threading.Tasks;

Console.WriteLine("Hello, World!");


        HttpClient _httpClient = new HttpClient();

        string apiUrl = "https://localhost:5001/api/products";

        // Get all products
        var products = await _httpClient.GetFromJsonAsync<Product[]>(apiUrl);
        foreach (var product in products)
        {
            Console.WriteLine($"{product.Id}: {product.Name} - ${product.Price}");
        }

        // Add a new product
        var newProduct = new Product { Name = "New Product", Price = 19.99M };
        var response = await _httpClient.PostAsJsonAsync(apiUrl, newProduct);
        if (response.IsSuccessStatusCode)
        {
            Console.WriteLine("Product added successfully.");
        }

        // Get a product by id
        var productById = await _httpClient.GetFromJsonAsync<Product>($"{apiUrl}/1");
        Console.WriteLine($"{productById.Id}: {productById.Name} - ${productById.Price}");

        // Update a product
        var updateProduct = new Product { Id = 1, Name = "Updated Product", Price = 24.99M };
        await _httpClient.PutAsJsonAsync($"{apiUrl}/1", updateProduct);

        // Delete a product
        await _httpClient.DeleteAsync($"{apiUrl}/2");

public class Product
{
    public int Id { get; set; }
    public string Name { get; set; }
    public decimal Price { get; set; }
}

4. 運行客戶端

dotnet run

結果

Hello, World!  
1: Laptop - $3000.00  
Product added successfully.  
1: Laptop - $3000.00

文章轉自微信公眾號@DotNet NB

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