DNTCommon.Web.Core provides common scenarios' solutions for ASP.NET Core 1.1.x, 2.x and 3.x applications.

To install DNTCommon.Web.Core, run the following command in the Package Manager Console:

PM> Install-Package DNTCommon.Web.Core

You can also view the package page on NuGet.

After installing the DNTCommon.Web.Core package, to register its default providers, call services.AddDNTCommonWeb(); method in your Startup class.

using DNTCommon.Web.Core;

namespace MyWebApp
{
    public class Startup
    {
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddDNTCommonWeb();
        }

• ActionResults

  • FeedResult is an ASP.NET Core RSS feed renderer.
  • OpenSearchResult is an ASP.NET Core OpenSearch description format provider.
  • SitemapResult is an ASP.NET Core Sitemap renderer.

• Caching

  • ICacheService encapsulates IMemoryCache functionalities.
  • [NoBrowserCache] action filter sets no-cache, must-revalidate, no-store headers for the current Response.

• DependencyInjection

  • IServiceProviderExtensions creates an IServiceScope which contains an IServiceProvider used to resolve dependencies from a newly created scope and then runs an associated callback.

• Drawing

  • TextToImageExtensions and TextToImageResult draw a text on a bitmap and then return it as a png byte array.

• Http

  • ICommonHttpClientFactory service, reuses a single HttpClient instance across a multi-threaded application.
  • DomainHelperExtensions provides useful extension methods to extract domain info of the URL's.
  • IDownloaderService encapsulates HttpClient's best practices of downloading large files.
  • IHtmlHelperService provides helper methods to work with HTML contents such as extracting links and titles or changing relative Urls to absolute Urls.
  • IHttpRequestInfoService provides useful methods to work with current HttpContext.Request.
  • IRedirectUrlFinderService finds the actual hidden URL after multiple redirects.
  • IUrlNormalizationService transforms a URL into a normalized URL so it is possible to determine if two syntactically different URLs may be equivalent.
  • IHtmlReaderService reads the HTML document's nodes recursively.

• Mail

  • IWebMailService simplifies sending an email using the MailKit library. It's able to use razor based email templates.

• ModelBinders

  • PersianDateModelBinderProvider parses an incoming Persian date and then binds it to a DateTime property automatically. To use it globally (assuming your app only sends Persian dates to the server), Add it to MvcOptions: services.AddMvc(options => options.UsePersianDateModelBinder()) or just apply it to an specific view-model [ModelBinder(BinderType = typeof(PersianDateModelBinder))].
  • YeKeModelBinderProvider parses an incoming text and then corrects its Ye & Ke characters automatically. To use it globally, Add it to MvcOptions: services.AddMvc(options => options.UseYeKeModelBinder()) or just apply it to an specific view-model [ModelBinder(BinderType = typeof(YeKeModelBinder))].

• Mvc

  • ControllerExtensions provides useful extension methods to work with MVC Controllers.
  • IMvcActionsDiscoveryService provides a way to list all of the controllers and action methods of an MVC application.
  • IViewRendererService helps rendering a .cshtml file as an string. It's useful for creating razor based email templates.
  • UploadFileService saves the posted IFormFile to the specified directory asynchronously.

• Security

  • [AjaxOnly] action filter determines whether the HttpRequest's X-Requested-With header has XMLHttpRequest value.
  • IProtectionProviderService is an encryption provider based on Microsoft.AspNetCore.DataProtection.IDataProtector. It's only useful for short-term encryption scenarios such as creating encrypted HTTP cookies.
  • IFileNameSanitizerService determines whether the requested file is safe to download to avoid Directory Traversal & File Inclusion attacks.
  • UploadFileExtensions attribute determines only selected file extensions are safe to be uploaded.
  • AllowUploadSafeFiles attribute disallows uploading dangerous files such as .aspx, web.config and .asp files.
  • AntiDosMiddleware is a rate limiter and throttling middleware for ASP.NET Core apps. To use it first add app.UseAntiDos() and services.Configure<AntiDosConfig> to Startup.cs file. Then complete the AntiDosConfig section of the appsettings.json file.
  • IAntiXssService provides a cleaning service for unsafe HTML fragments that can lead to XSS attacks based on a whitelist of allowed tags and attributes. To use it add services.Configure<AntiXssConfig> to Startup.cs file. Then complete the AntiXssConfig section of the appsettings.json file.