CSharp Feeds

Style follows semantics

Eric Lippert — Mon, 01 Feb 2010 16:29:00 GMT

Which is better style? bool abc;if (Foo()) abc = Bar();else abc = false; vs bool abc = Foo() && Bar(); ? To me, this comes down to the question “is Bar useful solely for obtaining its value, or also for its side effects?” The stylistic choices should typically be driven by a desire to clearly communicate the semantics of the program fragment. The metasyntatic names are therefore making this harder to answer, not easier. Suppose the choice were in fact between: bool loginSucc

Acer 1420P Leaky Handle Driver Fix

Brian Peek — Sun, 31 Jan 2010 22:07:00 GMT

Download: SDTabletPCFix_1.0.0.0.zip I wasn’t lucky enough to receive the Acer 1420P laptop given out at PDC this year since I was “staff”, however I wound up picking one up on eBay for a very reasonable price. I received it last week, added an additional 2GB of RAM, used my Windows Home Server to save off the original hard drive image, and then repaved the machine, installing Windows 7 Ultimate x64, drivers, and applications from scratch. Earlier this week I noticed the machine was

Calling constructors in arbitrary places

Eric Lippert — Thu, 28 Jan 2010 15:10:00 GMT

C# lets you call another constructor from a given constructor, but only before the body of the calling constructor runs: public C(int x) : this(x, null){ // …}public C(int x, string y){ // …} Why can you call another constructor at the beginning of a constructor block, but not at the end of the block, or in the middle of the block? Well, let's break it down into two cases. (1) You're calling a "base" constructor, and (2) you're calling a "this" constructor. For the "base" scenar

Extensible Output Caching with ASP.NET 4 (VS 2010 and .NET 4.0 Series)

ScottGu — Thu, 28 Jan 2010 07:27:22 GMT

[In addition to blogging, I am also now using Twitter for quick updates and to share links. Follow me at: twitter.com/scottgu] This is the fourteenth in a series of blog posts I’m doing on the upcoming VS 2010 and .NET 4 release. Today’s post covers some of the output caching extensibility improvements being made to ASP.NET 4. These can be used by all ASP.NET 4 applications – including those built using both ASP.NET Web Forms and ASP.NET MVC. Output Caching Today ASP.NET

Creating attached properties

luisabreu — Wed, 27 Jan 2010 10:20:27 GMT

Now that you understand what attached properties are, we’re in the position to look at what is needed for creating attached properties. Since we’re building custom code, we do really need to rely in the RegisterAttached method (of the DependencyProperty class). Creating a new attached properties means doing the following: adding a static DependencyProperty field to the class; using the RegisterAttached method for creating the field which is used as a store for the dependency property;

Playing With LINQ: Getting Interface Property Implementations

Paulo Morgado — Wed, 27 Jan 2010 02:22:00 GMT

Today, my friend Nuno was writing some code to get the PropertyInfos of a class implementation of an interface. Given this interface:public interface ISomeInterface { int IntProperty { get; set; } string StringProperty { get; } void Method(); } and this class:public class SomeClass : ISomeInterface { int ISomeInterface.IntProperty { get; set; } public int IntProperty { get; private set; } public string StringProperty { get; private set; } public void Method() { } } Nu

Type initialization changes in .NET 4.0

skeet — Tue, 26 Jan 2010 17:48:00 GMT

This morning, while checking out an email I'd received about my brain-teasers page, I discovered an interesting change to the CLR in .NET 4.0. At least, I think it's interesting. It's possible that different builds of the CLR have exhibited different behaviour for a while - I only have 32-bit versions of Windows installed, so that's what I'm looking at for this whole post. (Oh, and all testing was done under .NET 4.0b2 - it could still change before release.) Note: to try any

Magellan is on CodePlex

Paul Stovell — Tue, 26 Jan 2010 07:04:16 GMT

I have migrated the Magellan source code and releases to CodePlex. http://magellan.codeplex.com A few benefits to using CodePlex are: I use TeamCity to publish releases for each check in (thanks to the MSBuild Deployment Tools project). The releases are hidden at first (in case they have problems) and once I have tested them they become public. You can use the RSS feed to stay up to date. You can use the Issue Tracker to report bugs. You can use the online source code b

My ASP.NET MVC in Action talk from Houston TechFest (webcast)

Jeffrey Palermo — Mon, 25 Jan 2010 22:02:00 GMT

Here is a talk I gave on 26 September 2009 at the Houston TechFest. Thanks to Shawn Weisfeld for recording it!

Why are unused using directives not a warning?

Eric Lippert — Mon, 25 Jan 2010 15:00:00 GMT

As I’ve discussed before, we try to reserve warnings for only those situations where we can say with almost certainty that the code is broken, misleading or useless. One reason for trying to ensure that warnings are not “false positives” is that we don’t ever want to encourage someone to take working, correct code and break it so as to remove the warning. Another is that since many people compile with “warnings are errors” turned on, we do not want to introduce a whole lot of unnecessary build