Posts relating to C# and .NET
i++; is a very useful piece of code but it doesn’t always act how people expect. This was highlighted when a friend asked me about it today. He had the following code: int i = 0; int j = i++; He wanted both i and j to be incremented and thought that the ++ syntax … More i++;
When creating a generic type, you can specify constraints on the types that can be passed in. This is done like so: public class Foo where T: Base Where Base is a class or interface that T must implement. You can also specify that T is a struct, a class or has a parameterless constructor … More Multiple Constraints on Type Parameters
Saw an interesting error crop up in Visual Studio today: “A local variable named ‘foo’ cannot be declared in this scope because it would give a different meaning to ‘foo’, which is already used in a ‘child’ scope to denote something else”. I never knew that child scopes could be affected by a variable defined … More C# Variable Scope
When you have the MySQL .NET library installed on a local machine and want to deploy an Entity Framework application to a server without the library installed, I always (thus-far without fail) forget at least one of the following: EntityFramework.dll – set to copy local MySql.Data.dll – set to copy local MySql.Data.Entity.dll – set to … More MySQL in a .NET App
I’ve had an issue which has consumed the majority of today: my MVC action, “Save”, with 1 parameter has been receiving an empty object as its parameter despite the form posting what looked like valid data. It seemed like the model binder was refusing to bind the posted data for some reason. The situation was … More MVC Action Not Receiving Posted Data
Finally! I have my HTML5 History API Library complete! It’s only in phase 1 and could do with a lot more tweaking but it is fully functional as of today! I’ve hosted it on CodePlex here. With the History API documentation here. I plan to write it up in more detail later (keep an eye … More HTML5 History API Library
The htmlAttributes parameter is used a lot in HtmlHelper functions in your MVC views. These are great… however, what about when you want to set the class attribute or create a custom data-* attribute? In C#, class is a reserved word and hyphens (-) are forbidden in variable names – so how can we define … More class and data-* Attributes in MVC
Snippets live in C:Users[YOUR_NAME]DocumentsVisual Studio [VERSION]Code SnippetsVisual C#My Code Snippets Place the following into the above folder: fn.snippet. Also, find attached an MVC action snippet: actn.snippet. Find these on GitHub here.
Phil Haack has written a few interesting articles about how to do a string format with text keys as opposed to indexes ({name} instead of {0}). See the original article and where he revisits the topic with even better results. The final result is a few extension methods which can be run like so: string pattern = … More Named String Formatting
A friend of mine today, when I moaned that Visual Studio designer was forgetting a property I set on a custom-made DataGridViewColumn, pointed out that you have to override the Clone method in the DataGridViewColumn. Run the base implementation to receive the cloned column, cast it as the type of the current class and then … More Forgetful DataGridView Custom Columns
