Disable Entity Framework Code First Initialization Logic

When you use the Entity Framework Code First approach to build your database, EF’s default behavior is to verify if a database exists when the application runs the first time. In case it does not exist, EF creates it. There might exist some situations when there is no need to …

Handle Race Conditions / Concurrency in Code First Entity Framework Applications

Preface A common scenario in developing applications is the handling of concurrent database updates. Given there is an application to manage customers, that is used by multiple users simultaneous. User U1 reads the data of customer C1. While user U1 is looking at this data, user U2 reads the data …

Paging Made Easy with ASP.NET MVC 5, Entity Framework 6 and PageList.Mvc

Preface In former days, implementing paging sometimes took a little bit of time. That was independent from the used platform, native Windows Client or Web or whatever. Fortunately, that was then and this is now. Implementing paging in an ASP.NET MVC 5 Entity Framework 6 application really became simple. Just …

Handle Deactivated JavaScript in ASP.NET MVC Web Application

Preface Depending on what your ASP.NET MVC Web application is supposed to do, it might be necessary that the client’s browser has JavaScript support enabled. If this is not the case, maybe you want to make sure the user will be informed and cannot use the application. And because there …

Create a 1:1 Table Relationship using Entity Framework

Preface My database roots are pure SQL. When I create a database, I use an Excel sheet for documentation purposes, which creates SQL statements to build up the tables. Table relationships (parent / child) with foreign keys I do define by hand, like the good old craftsmen do. It’s simple …

“Device Not Functioning” Exception on Invalid PrimaryLanguageOverride Value in Windows Store Apps

Oh, what a title for a post. The correct title is “‘A device attached to the system is not functioning. (Exception from HRESULT: 0x8007001F)’ Exception Occurs When Showing A TextBox and ApplicationLanguages.PrimaryLanguageOverride Is Set To An Invalid Value in Windows Store Apps on Windows 8.1“. Symptom Building the Factory Commander, …

Use Publicize.exe to Create Private Accessors for Visual Studio 2012+

Preface Starting with Visual Studio 2012, private accessors cannot be created any more by the IDE. The post Home-made Private Accessor for Visual Studio 2012+ presents an approach on how to create private accessors using the class Microsoft.VisualStudio.TestTools.UnitTesting.PrivateObject. Axel Mayer noted in the MSDN forums post How to create private …

IsTabStop Changes ListView ‘s Focusable Behaviour in Windows Store Apps

The Issue Using the Factory Commander, I noticed some strange behavior. I opened a folder with more items than can be displayed on the screen on the left side. Then I scrolled to the last item of the list and switched to the right list. There, I moved up or …

Position the PopupMenu for Drag And Drop Operations in Windows Store Apps

Preface Sometimes it is helpful to open a PopupMenu when the user drops items on a destination, e.g. to ask the user if the items should be copied or moved. I’d like to open the PopupMenu exactly where the user released the mouse / finger, means put the upper left …

Considerations Regarding Building a FileSystemWatcher for Windows Store Apps

Preface Unfortunately, .NET for Windows Store apps does not provide a FileSystemWatcher class. Nevertheless, one might want get notified when a folder, or file in a folder, has been changed. This post presents some points I found worth to consider when I implemented a FileSystemWatcher for Windows Store apps. Because …