how to develop simple web api using ASP .net core webapi?

Question

I'm new to .net core, I'm trying to build a calculator web API. I struggling to find the exact way to do this. I managed to build API controller part with multiple get methods which return math operation. Below is the code

//MathController.cs file.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Web.Http;

namespace Calculationwebapi.Controllers
{
    public class MathController : ApiController
    {
        [HttpGet]
        public int Add(int value1, int value2)
        {
            return value1 + value2;
        }

        [HttpGet]
        public int Substract(int value1, int value2)
        {
            return value1 - value2;
        }

        [HttpGet]
        public int Multiply(int value1, int value2)
        {
            return value1 * value2;
        }

        [HttpGet]
        public int Divide(int value1, int value2)
        {
            return value1 / value2;
        }

        [HttpGet]
        public string Get()
        {
            return "default";
        }
    }
}

What must be the project structure and how should I proceed next? Do I need to build model and view file as in .net core MVC? i built this in .net web API just by creating a web API server with API controller and configuring web api I used json to consume web API server. In .net core both MVC and web API are together so I'm little bit confused doing in .net core

Answer 1

您可以使用dotnet命令（从命令行）轻松创建Web api项目， dotnet new webapi将创建项目，请参见https://docs.microsoft.com/zh-cn/dotnet/core/tools/dotnet-new?tabs= netcore21

Answer 2

要在 .net core 中创建 web api，你必须有一个 db 类，你已经在其中编写了所有的 linq 操作来获取数据，然后右键单击 sollution 并添加新项目，然后转到 web 并选择 ASP .net web 应用程序和之后选择一个空模板，不要忘记检查 web api，然后你就可以开始编写 web api了。