asp.net core 2.0

About The Updated SPA Templates From ASP.NET Core

Install the new spa templates by running the following dotnet cli command, dotnet new --install Microsoft.DotNet.Web.Spa.ProjectTemplates::2.0.0-preview1-final More or less everyone working with ASP.NET Core, tried out the following SPA templates shipped with the framework, These templates are configured to use Angular/React/ReactRedux (based on your choice) on the client side and ASP.NET Core as back-end. Behind the scene a package Microsoft.AspNetCore.SpaServices is used as a middleware to provide different configurable options for your application such as HMR (Hot…

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Story of File Uploading in ASP.NET Core (Part III - Streaming Files)

We must consider saving files in byte[] formats unless it is absolute necessary, because over the time it can affect the performance of any data storage system. With that being said, streaming can be a good idea in this scenario. We can configure a static files folder for storing the uploaded files. However, this part is optional. You can simply use the web root folder wwwroot instead. But let's just see how to create a separate static files folder on the content root and use it to serve the uploaded…

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Story of File Uploading in ASP.NET Core (Part II - Angular/AJAX)

Uploading files from Angular end to an ASP.NET Core Web API can be done using the same IFormFile interface; introduced in the previous post. To keep things separated, a new API controller (UserController) has been created with the following POST action, [HttpPost] public async Task<IActionResult> PostUser([FromForm]UserVM vm) { if (!ModelState.IsValid) { return BadRequest(ModelState); } /* Use Automapper for mapping UserVM to User */ User user = new User { Name = vm.Name }; using (var memoryStream = new MemoryStream()) { await vm.Avatar.CopyToAsync(memoryStream); user.Avatar = memoryStream.ToArray(); } _context.Users.Add(…

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Angular Forms Validation, updateOn: 'blur' & updateOn: 'submit' (Angular 5 edition)

In my previous post, I wrote about Asynchronous Validation in Angular's Reactive Forms Control. But that was when we were in the age of Angular 4, now a new age is upon us: age of Angular 5. With the new version, we have some new ways of doing validations in Angular forms. Since I won’t talk about everything from the beginning (How to define a form model, how to add validators etc.), consider this post as a continuation of my previous one. I’ll just show you the two…

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How Tree Shaking Works in ASP.NET Core Angular SPA

If you've been using ES2015 modules throughout your javascript codebase; in other words: import(ing) and export(ing) modules, there is a good news for you. You can eliminate unused modules (dead code) from your published script when using different module bundlers available online. And this process of dead code elimination is known as so called Tree Shaking. While rollup (a trending module bundler) being the first to introduce the concept and implement it, other module bundlers came to realize that this is a must have feature and soon they…

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Cache headers for MVC File Action Result (ASP.NET Core 2.0)

You typically work with one of the following action results when you want to write a file to the response. FileContentResult (writes a binary file to response) FileStreamResult (writes a file from a stream to the response) VirtualFileResult (writes a file specified using a virtual path to the response) These are all coming from ASP.NET Core's MVC package. In earlier version of ASP.NET Core (1.*); using these action results, you could have served files but there wasn't any way of configuring cache headers for the responses. I'm pretty…

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