Practical .NET


Working with JSON in SQL Queries

SQL Server 2016 lets you treat JSON objects like rows in a table, allowing you to use data from AJAX queries in joins, updates and any other SQL statement you can think of.

Returning Simple Strings from Action Methods

When you want to return a string result -- either as text, HTML or XML -- then a ContentResult object gives you the right balance of simplicity and control.

Unit Testing AJAX Calls to an ASP.NET MVC Controller

Sometimes what you want to test is how your Action method behaves when it's invoked through an AJAX call. Here's how to mock up that call using Moq.

The Future of Programming

If you’ve been programming long enough, then you know that the "right way to do things" keeps changing. Here’s why, a description of where we are now and a guess about where we’re going.

Quick Tip: Read the Inner Exception!

That's often where the real problem is.

LocalDB: The Database Without a Connection String

If you just want to get going with a code-first database, you don't even need to define a connection string -- just write your objects.

Exploiting the Validation Tools in ASP.NET MVC

Your users will make mistakes ... but it would be a mistake to treat all their errors the same way. You can get more out of ASP.NET MVC's validation infrastructure just by paying attention to how you name your errors.

Returning JSON from SQL Server Queries

With JSON now the default format for moving data between clients and servers, SQL Server adds JSON support to make it easier to get your data out of the database and down to the client.

In-Memory ASP.NET Core Integration Tests with TestServer

Test, test and test again. You can automate those tests with a TestServer-based Web app that doesn't even touch the Web server.

Improving Feedback When Editing HTML

Get Visual Studio to be more helpful when you're working with HTML.

Send the Right Error Information with HttpException

When something goes wrong with your Web Service the decent thing to do is to return your errors in a variety of ways.

AJAX Without JavaScript

You like the idea of an AJAX application, but would rather not write the JavaScript yourself. You're in luck: ASP.NET MVC provides two tools that write the client-side code for you. And these tools even make sense if you’re comfortable with writing your own JavaScript.

Accept HTML and Script from Your Web Pages

Sensibly, ASP.NET MVC 5 prevents users from entering HTML or Script tags into your page's textboxes, protecting you from a wide variety of hacks. However, for those rare occasions when you do need to let the user enter tags, here's how to do it.

Calling Web Services with HttpWebRequest, WebClient and HttpClient

The .NET Framework gives you three different ways to call a Web Service. However, depending on your scenario, the latest and greatest object isn’t necessarily your best choice.

Add a Multi-Select ListBox or DropDownList to Your ASP.NET MVC View

Peter doesn't like them, but that doesn't mean you have to hate 'em, too -- here's how to add a listbox or dropdown list to your View that lets users select multiple items.

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