خطای Unsupported Media Type

ســلام

برای آپلود عکس مطابق با آموزشی این کنترلر رو ساختم



using System;

using System.Collections.Generic;

using System.Linq;

using System.Threading.Tasks;

using Microsoft.AspNetCore.Hosting;

using Microsoft.AspNetCore.Http;

using Microsoft.AspNetCore.Mvc;

using System.IO;



namespace imageuploadapi.Controllers

{

    [Route("api/[controller]")]

    [ApiController]



  

    public class ImageuploadController : ControllerBase

    {

        public static IWebHostEnvironment _environment;

        public ImageuploadController (IWebHostEnvironment environment)

        {

            _environment = environment;

        }



        public class Fileuploadapi

        {

            public  IFormFile files { get; set; }

        }

        [HttpPost]

        public async Task<string> Post(Fileuploadapi objfile)

        {

            try

            {

                if (objfile.files.Length > 0)

                {

                    if (!Directory.Exists(_environment.WebRootPath + "\\upload\\"))

                    {

                        Directory.CreateDirectory(_environment.WebRootPath + "\\upload\\");

                    }



                    using (FileStream fileStream = System.IO.File.Create(_environment.WebRootPath + "\\upload\\" + objfile.files.FileName))

                    {

                        objfile.files.CopyTo(fileStream);

                        fileStream.Flush();

                        return "\\upload\\" + objfile.files.FileName;

                    }

                }

                else

                {

                    return "Failed";

                }

            }



            catch (Exception ex)

            {



                return ex.Message.ToString();

            }





            }



        }





    }

و این هم فایل Startup



using System;

using System.Collections.Generic;

using System.Linq;

using System.Threading.Tasks;

using Microsoft.AspNetCore.Builder;

using Microsoft.AspNetCore.Hosting;

using Microsoft.AspNetCore.Http;

using Microsoft.AspNetCore.HttpsPolicy;

using Microsoft.AspNetCore.Mvc;

using Microsoft.Extensions.Configuration;

using Microsoft.Extensions.DependencyInjection;

using Microsoft.Extensions.Hosting;

using Microsoft.Extensions.Logging;



namespace imageuploadapi

{

    public class Startup

    {

        public Startup(IConfiguration configuration)

        {

            Configuration = configuration;

        }



        public IConfiguration Configuration { get; }



        // This method gets called by the runtime. Use this method to add services to the container.

        public void ConfigureServices(IServiceCollection services)

        {

            

            services.AddControllers();

            



        }



        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.

        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)

        {

            if (env.IsDevelopment())

            {

                app.UseDeveloperExceptionPage();

            }

            else

            {

                app.UseHsts();

            }



            app.UseHttpsRedirection();



            app.UseRouting();



            app.UseAuthorization();

            app.UseStaticFiles();



            app.UseEndpoints(endpoints =>

            {

                endpoints.MapControllers();

            });



            app.Run(async (context) => {

                await context.Response.WriteAsync("could not find  Anything");

            });

        }

    }

}

و این هم شات از ارسال فایل با نرم افزار Postman