Similar to the UITableView in iOS and ListView in Android, the XF version can be used to cache images for use in other locations of an application.
- By Wallace McClure
- 03/22/2017
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.
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.
Let's use this classical statistics technique -- and some R, of course -- to get to some of the latent variables hiding in your data.
- By James McCaffrey
- 03/16/2017
Nifty, printable info graphic shows everything new and updated in the latest developer suite.
- By Michael Domingo
- 03/15/2017
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.
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.
We just covered background information on our last file processing foray. Now, what's faster: CRT, Windows API, or something else?
- By Bartlomiej Filipek
- 03/06/2017
With Visual Studio 2017 making its debut next week, a number of software and services that comprise its tooling ecosystem have already embedded support for the development platform.
- By Michael Domingo
- 03/02/2017
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.
If you want to ensure that the right code is loaded at the right time (and only loaded when you need it), you can use TypeScript code to organize your code into modules. As a side benefit, managing your script tags will get considerably easier.
Some questions can only be answered by organizing your data into groups and then finding groups that contain particular members or have particular properties.
Good documentation is important for any application, and it starts with documenting your code. It helps you and it helps your users.
- By Terrence Dorsey
- 02/21/2017
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.
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.
Here's a trick to have Marten automatically deserialize JSON data only when you want it to.
- By Jason Roberts
- 02/16/2017
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.
You don't need to take your hands off the keyboard to move to another tab in the Toolbox.
Your Xamarin Forms App needs one more little tweak, and that's to make it device-specific, so users don't freak out. Unlike the Apple tweak, the Android tweak takes a bit of work.
- By Wallace McClure
- 02/08/2017
If you decide on using an Enum with enumerated values in your Entity Framework class, here are the tools you'll need to make it work. But an enumerated value shouldn't be your first choice.