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If someone tells you that LINQ doesn't support subqueries ... well, they're not wrong. But they're also not entirely correct, either. With LINQ you can meet many of the goals of SQL subqueries including the ability to build complex queries out of simpler ones.
11/01/2018
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By Chris Sainty
Blazor expert Chris Sainty provides hands-on code samples to explain how to handle DOM and user-defined events in Microsoft's experimental project for writing browser-based apps with C# instead of JavaScript.
10/31/2018
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ASP.NET Web API and ASP.NET MVC have similar (but not identical) mechanisms that allow you to customize how your requests and responses are processed. Not surprisingly, ASP.NET Web API's implementation is both easier and more flexible than ASP.NET MVC.
10/30/2018
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Sure, F12 will take you to the definition of whatever your cursor is sitting on. But that's just the start.
10/29/2018
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It's a lot easier in ASP.NET Core to let the client know that everything went right (or wrong).
10/26/2018
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You can mix script files from CDNs with your own local files, but it can be difficult to test the result to see if your code works. Here's how to both bundle JavaScript from a CDN and check to see if it's being done right.
10/25/2018
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You have at least two options for adding processing to multiple controllers without duplicating code in each of the Controllers.
10/23/2018
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The Data Science Doctor explains how to use the reinforcement learning branch of machine learning with the Q-learning approach, providing code on how to solve a maze problem for an easy-to-understand example.
10/19/2018
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Eric Vogel shows how to create a new ASP.NET Core Web application using Visual Studio 2017.
10/18/2018
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Peter doesn’t see why the next UI you create (for the Web or for the desktop or for your mobile device) won’t be created in Xamarin.Forms. Or why that wouldn’t be your next career move.
10/17/2018
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If you’re going to write comments then you might as well avoid embarrassing yourself.
10/16/2018
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Peter shares a great tool that not only makes your application run faster but gives you insight into other potential problems.
10/15/2018
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The Blazor documentation doesn't say you can't do this and it does actually work. But, still, you'd probably be foolish to take advantage of it.
10/10/2018
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If, in your "need for speed," you're looking to access and update your data as fast as possible, you can get to that goal by combining memory-optimized tables with compiled procs.
10/09/2018
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If screaming speed in data access is the most important thing in your life, SQL Server's durable in-memory, memory-optimized tables are your answer. They were good in SQL Server 2014 and they're even better in SQL Server 2016, 2017 and Azure.
10/09/2018
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You have a bunch of options for debugging Android applications built with Xamarin. Unfortunately, only one of them has worked well for Peter in all scenarios. Here are all your options with Peter's opinion on each and a recommendation on the best one.
10/08/2018
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You've got a class that accepts an object from a client (perhaps, that class is an ASP.NET MVC Controller). Here's the simplest way to update the related Entity Framework object with the client's data before saving it to your database.
10/04/2018
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Peter thinks he's a bad person for even mentioning this tip. But, he claims, sometimes your best option in testing is to look at the internal state of the code under test. PrivateObject and PrivateType will let you do that.
10/03/2018
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If you want to call Blazor .NET code from JavaScript (or vice versa) with instantiated objects, or while passing multiple parameters, or while catching the results produced by that code, here's how to do it.
10/01/2018
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You're probably perfectly happy with the layout of windows that Visual Studio is giving you (it's whatever window layout you last used). But if you think there's a more optimal layout, it's easy to change. And if there's a couple of layouts you like ... well, you can have them, also.
09/27/2018
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You're not a DBA but you're responsible for managing your organization's SQL Server installation. Here are some tips on what you can do to speed up all your data access.
09/26/2018
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The OpenAPI (Swagger) technology suite includes a file that describes your Web API service. Peter thinks it's the slickest tool available to ensure that clients can access your services.
09/24/2018
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Model binding works great ... but it sometimes lets me down. In those cases you need to tell model binding to do the right thing. Here's an attribute that will let you know when you're missing non-nullable data and do it without interfering with your data design.
09/17/2018
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By Chris Sainty
Chris Sainty provides hands-on code samples on how to use Web APIs to interact with Blazor, an experimental framework from the ASP.NET team that allows developers to write C# and Razor code and have it run in the browser via WebAssembly.
09/13/2018
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If you want to speed up your SQL Server queries you need to know how your application and your users actually use your database.
09/06/2018