Practical .NET


Introducing: Serverless C# with Azure Functions

Azure Functions get you beyond the traditional client/server approach to app creation, right into the cloud. Let’s first look at triggers.

Controlling Process Flow with the Template Method Pattern

If you have a process that needs to be performed -- but with variations -- then implementing the Template Method pattern will give you simpler, more extensible code. You’ll also recognize this pattern from all the times you work with it in the .NET Framework.

Getting All the Results in LINQ with Methods

Peter follows up on advice for joining collections with LINQ and getting all of the results, but this time, he uses the method-based syntax.

Move Beyond Factory Methods with the Builder Pattern in C#/Visual Basic

When your objects get sufficiently complicated to create, it's time to simplify your life by moving to the Builder pattern. The Builder pattern is not only a great pattern for creating complicated objects, it supports your application's further evolution.

Errors on Unused Sections in ASP.NET MVC Views

If you don't use a section in a View, then you'll get an error. But you may not find out until it's too late.

Checking Up on Your Entity Framework Objects with DbEntityEntry

The Entity Framework DbEntityEntry object lets you do all sorts of things you probably didn't think were possible, including getting the latest data from the database (without losing your current data) and invoking the .NET Framework validation subsystem.

Set HtmlHelpers Parameters Using Anonymous Objects in ASP.NET

If you're passing an anonymous object to an HtmlHelper method (to ActionLink, for example), you might want to consider using that anonymous object to eliminate one of the other parameters.

Efficiently Loading Related Objects in Entity Framework

If you're not using the Entity Framework DbCollectionEntry object when working with an entity class's related objects, then your application is running too slow. Using DbCollectionEntry lets you asynchronously retrieve related objects and get only the objects you want.

Customize Browser Window Size When Debugging ASP.NET Apps

If, after pressing F5, you've ever found yourself adjusting the size of your browser window, then this tip is for you. But you shouldn't be surprised if it doesn't work.

Mimic Lazy Loading with Entity Framework 6 and Entity Framework Core 1.1

Entity Framework Core doesn't have lazy loading (at least, not yet). But you can fake it by using explicit loading, though it doesn't work quite the way you might want. In fact, it's probably a good idea to use this in Entity Framework 6.

Selecting Groups in LINQ

Some questions can only be answered by organizing your data into groups and then finding groups that contain particular members or have particular properties.

Grouping Results in LINQ

Complex queries can be solved with a combination of simpler LINQ queries, anonymous objects and the Group/By/Into clauses. Using Group/By/Into will also give you the best possible performance for those complex queries.

Export Your ASP.NET Configuration To Reduce Restarts, Share Settings

You don't have to keep all your configuration settings in your config file. There are even some benefits to exporting sections to separate files.

Returning Raw JSON Data in Web API with Marten

Here's a trick to have Marten automatically deserialize JSON data only when you want it to.

Getting All the Results When Joining with LINQ

When you want to find all the objects that are missing a corresponding object, then you need the LINQ equivalent of an outer join. Here, step by painful step, is how to build that query.

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