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ASP.NET Core: A More Realistic Starter Kit

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ASP.NET Core is a fascinating platform with many good ideas, but in its present form (RC1)there is a culture shock for experienced ASP.NET developers to experience the effort involved in porting a realistic application. There is an obvious advantage in being able to host an application on any web server, but is this enough to compensate for losing the convenience of an integrated pipeline?… Read more

Posting Form Content via JavaScript

Web-based applications run smoother if instead of using the traditional form method, they use JavaScript to post data to the server and to update the user interface after posting data: It also makes it easier to keep POST and GET actions separated. SignalR makes it even slicker; it can even update multiple pages at the same time. Is it time to use JavaScript to post data rather than posting via the browser the traditional way?… Read more

Introduction to Bower, Grunt, and Gulp in Visual Studio

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Developers are now spending much more time writing and debugging JavaScript, CSS, HTML templates etc. Microsoft have responded by adding better tools for front-end development into their development environment, Visual Studio. In this article Jon Smith uses a sample application to demonstrate how he converted an existing ASP.NET MVC5 application to use these new tools… Read more

Keeping POST and GET Separated

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The occasional problems that you can get with POST and GET are typical of the difficulties of separating any command and query operations. This separation is tricky to achieve, at least in ASP.NET MVC. Dino suggests some ways of avoiding errors and minimising the confusing warning messages.… Read more

How to Take an Asp.Net MVC Web Site Down for Maintenance

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Keeping a customer facing web site up and performing well is a challenge, especially when you are still adding new features. While providing an "always on" experience for users is preferred there are times when it is easier to take the site "down for maintenance" and fix those things that are just too difficult and costly to do with the site up. Jon Smith describes his solution to a controlled "down for maintenance" approach for ASP.NET MVC sites.… Read more

Script Loading between HTTP/1.1 and HTTP/2

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Web pages increasingly suffer from JavaScript-library bloat. Because it is difficult to avoid the awkward wait while these libraries load, there are some techniques for making the loading of these script files less evident to the page-load time. The introduction of HTTP/2 opens up further opportunities to defer script load or do it asynchronously in parallel. Dino explains.… Read more

So You Need to Expose JSON Endpoints

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Even the most experienced programmers can be caught unawares by software they've used for years without trouble. Dino Esposito explains why and how the JSON method in an ASP.NET MVC controller class suddenly started to cause an exception on a production server, and how he fixed the problem.… Read more

Monitor Server Tasks with ASP.NET SignalR and Bootstrap

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Despite the fact that browsers were designed specifically to get information from the server only by requesting or 'pulling' it, developers have always yearned to be able to push data to browsers from the server. Typically, it would be to display, within a web page within the browser, the progress of a long-running task. Now ASP.NET SignalR and Bootstrap make it possible, with care. Dino explains how.… Read more

Selective Updates with ASP.NET SignalR

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SignalR is great for all those tasks that one would otherwise need to rely on AJAX. However, it is much more versatile than this: it allows, for example, a server process to update users' browser windows selectively rather than broadcast to all, and can treat groups of users in different ways. Dino explains how this magic works.… Read more

Tracking Online Users with SignalR

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SignalR is all about pushing notifications and data between web server and browser, but you can tap into a by-product of the work it has to do to keep track of the users who are currently online. This will provide a list of the users currently connected to a web community. SignalR has endpoints to push server events of any kind to the client, and thereby provides solutions for a number of common programming tasks.… Read more

Tracking Online Users

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Sometimes, the requirements for a web application include a list of users that are currently logged-in. It would seem, at first glance, to be pretty trivial, but because few of us explicitly log out of web applications, the reality can get complicated. Even the best solution is a trade-off. Dino explains the issues and alternatives.… Read more

ASP.NET SignalR: Old-fashioned Polling, Just Done Better

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A website often needs to update a page as the underlying data changes. You can, of course, just poll the server every few seconds on the browser via JavaScript, but to receive live updates from a site it is better to push data to the browser, using server-based SignalR. This uses web sockets to do this rather than browser-based polling where web sockets are supported on the browser. Dino explains how.… Read more

Introducing Single Sign-on to an existing ASP.NET MVC application

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Implementing a single sign-on for a set of a company's business applications isn't hard if they are all new applications, especially if you use WS-Federation and and Identity server such as Thinktecture. If it is a mix of new and existing applications then it helps to sort out any problems if you first understand the technology as a whole, and appreciate how it works. Jarek shares his experiences.… Read more

Premature Scalability and the Root of All Evil

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When you're designing an application, there is a temptation to build it to a super-scalable future-proof architecture, even when the immediate requirements can be met by a simple single-tier application that can exploit the pure power of IIS and SQL Server. Dino recounts the painful story of what happened when the gurus got their way.… Read more

The Compromise Between Development Time and Performance in Data-Driven ASP.NET MVC

As developers we always want to produce efficient code, but efficient in what - development time or overall performance? In this article Jon Smith describes how to investigate and understand performance so that you can decide how to balance these two goals. The article starts with high level performance issues and drills down to detailed code tuning using examples taken from real applications.… Read more

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