As I worked on another project today, I came across a simple dilemma. The project reads in a small Microsoft Access database (also known as a .mdb file) into memory. It then queries said database with a simple ‘SELECT foo FROM bar…‘ statement and pulls the results into the program. However, if you load an Access database that does not follow the expected schema, the program throws a nasty error and causes some logic interruption. I needed a simple way to check for a few table names before proceeding, so I whipped up a simple C# method.
Enumerations in C# allow you to group common constants together inside a piece of code. They are often used for determining a system state, flag state, or other constant conditions throughout the program. Usually enums are not formatted for “pretty” displaying to the end user. However you can use a little C# magic to make them behave better with descriptions!
There will be times when you are using a third-party library or some other “black box” software in your project. During those times you may need to add functionality to objects or classes, but that addition does not necessarily call for employing inheritance or some other subclass. In fact, you might not have access to the library’s source code if it is proprietary. There is a wonderful feature of C# though that allows you to add-on commonly used methods to any type of object, and that feature is called Extension Methods
As you work through various projects in Visual Studio 2010 you will find yourself reusing a lot of code. In fact, you may find yourself reusing a lot of the same static code, or code that follows a basic pattern. Visual Studio 2010 lets you cut out a lot of this wasted time by employing code snippets. Code snippets can generate basic code patterns or layouts on the fly inside your project. Today I will walk you through creating a basic code snippet for generating a C# class with specific section stubs.
Everyone knows how amazing XAML is to create flexible and beautiful GUI’s for various applications. XAML provides a wonderful interface to building a simple grid of data (much like an Excel spreadsheet) with the DataGrid namespace. I was working on a DataGrid object in one of my projects today, and chose to re-work the XAML into a better form for easier reading and code re-use. I however stumbled into a strange characteristic of the Datagrid, and I wanted to share with you that issue and the fix I came up with.
The #region preprocessor directive can make your C# code very organized. It is a shame that so many coders do not learn to use #region early and often. Sure #region allows Visual Studio 2010 to collapse your code block down into one-line, but better yet it can be used to sort code by common sections. This provides a framework for other source files throughout your project to mimic. Today I wanted to cover how I like to sort my code in my projects.
If you have used Visual Studio 2008 or the Visual Studio 2010 Betas you should remember a distinct feature. When you moved through documents inside the IDE with CTRL + TAB you would get a nice little preview of the documents you were flipping through. If you have used the latest version of Visual Studio 2010, you may have noticed that this feature has been pulled. Well you can restore it with a simple registry change!
A few days ago I compared and contrasted Asynchronous and Parallel Programming. Today I would like to walk you through a very simple threading example in C#, and why the concept of “thread safety” is important to know before you start writing parallel applications.
If you have ever worked with an application that bounces from your workstation, to QA, then to production the odds are high you have dealt with C# preprocessor directives. While C# does not have a preprocessing engine, these directives are treated as such. They have been named as such to be consistent with C and C++ for familiarity. Directives can be used to build classes based on the environment they will be deployed in, to grouping chunks of your source code together for collapsing inside the Visual Studio code editor. This article will go over each C# preprocessor directive.
The last decade has brought about the age of multi-core processors to many homes and businesses around the globe. In fact, you would be more hard-pressed to find a computer with no multi-core (either physical, or virtual) support for sale on the market today. Software Engineers and Architects have already started designing and developing applications that use multiple cores. This leads to extended use of Asynchronous and Parallel programming patterns and techniques.