using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Microsoft.OpenApi.Models;
using Travel.Application;
using Travel.WebApi.Filters;
using Travel.Data;
using Travel.Shared;

namespace Travel.WebApi
{
    public class Startup
    {
        public Startup(IConfiguration configuration)
        {
            Configuration = configuration;
        }

        public IConfiguration Configuration { get; }
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddApplication();
            services.AddInfrastructureData();
            services.AddInfrastructureShared(Configuration);

            services.AddHttpContextAccessor();

            services.AddControllers();

            services.AddControllersWithViews(options =>
                options.Filters.Add(new ApiExceptionFilter()));
            services.Configure<ApiBehaviorOptions>(options =>
                options.SuppressModelStateInvalidFilter = true
            );

            services.AddSwaggerGen(c =>
            {
                c.SwaggerDoc("v1", new OpenApiInfo { Title = "Travel.WebApi", Version = "v1" });
            });
        }
        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
                app.UseSwagger();
                app.UseSwaggerUI(c => c.SwaggerEndpoint("/swagger/v1/swagger.json", "Travel.WebApi v1"));
            }

            app.UseHttpsRedirection();
            app.UseRouting();
            app.UseAuthorization();
            app.UseEndpoints(endpoints =>
            {
                endpoints.MapControllers();
            });
        }
    }
}

So this is my "StartUp" file and I have an error that says :

Severity Code Description Project File Line Suppression State Error CS1061 'IServiceCollection' does not contain a definition for 'AddInfrastructureData' and no accessible extension method 'AddInfrastructureData' accepting a first argument of type 'IServiceCollection' could be found (are you missing a using directive or an assembly reference?) Travel.WebApi C:\Users\Alexandru\Desktop\WebDev\AdminApp\src\presentation\Travel.WebApi\Startup.cs 26 Active

I just.. am stuck. Why can it not find "AddInfrastructureData"?

CodePudding user response：

Try to add a using namespace where the AddInfrastructureData resides.

Replace Travel.Extensions with the appropriate namespace from your code:

namespace Travel.Extensions;

public static class ServiceCollectionExtensions
{
  public static IServiceCollection AddInfrastructureData(this IServiceCollection servicesCollection)
  {
    //...
    return servicesCollection;
  }
}

// Startup.cs

using Travel.Extensions;

Please provide more info in case that it was not helpful.

CodePudding user response：

you could check your guide book if you have missed any packages

and you could check your guide book if you have missed to copy the codes like below:

 public static class DependencyInjection
    {
        public static IServiceCollection AddInfrastructureData(this IServiceCollection services)
        {   
            return services;
        }
        public static IServiceCollection AddInfrastructureShared(this IServiceCollection services,IConfiguration configuration)
        {
            return services;
        }
    }