Basically you’re talking about aborting an action which (as far as we know) has no graceful way of aborting. That means there’s going to be no safe way of aborting it. Thread.Abort is just not a nice thing to do – there are various race conditions and ugly situations you can get into (see the … Read more
UPDATE from November 2020: The original answer below was written in 2011; the rules for generic method type inference, overload resolution, and how “final validation” of methods is done have had small but significant changes in recent versions of C#; this answer, and the link to an archived article on my original MSDN blog about … Read more
In short, no, you can’t. Long answer, extension methods are just syntactic sugar. IE: If you have an extension method on string let’s say: public static string SomeStringExtension(this string s) { //whatever.. } When you then call it: myString.SomeStringExtension(); The compiler just turns it into: ExtensionClass.SomeStringExtension(myString); So as you can see, there’s no way to … Read more
A couple points: First off, the proposed feature (implicit “this.” on an extension method call) is unnecessary. Extension methods were necessary for LINQ query comprehensions to work the way we wanted; the receiver is always stated in the query so it is not necessary to support implicit this to make LINQ work. Second, the feature … Read more
In general, exceptions included, you should treat an extension method as if it were a normal static method. In this case you should throw an ArgumentNullException. Throwing a NullReferenceException here is a bad idea for a few reasons A null reference did not actually occur so seeing one is counterintuitive Throwing a NullReferenceException and causing … Read more
Java does not support extension methods. Instead, you can make a regular static method, or write your own class.
This is not currently possible, because extension methods must be in static classes, and static classes can’t have operator overloads. But the feature is being discussed for some future release of C#. Mads talked a bit more about implementing it in this video from 2017. On why it isn’t currently implemented, Mads Torgersen, C# Language … Read more
Since the Beta, Razor uses a different config section for globally defining namespace imports. In your Views\Web.config file you should add the following: <configSections> <sectionGroup name=”system.web.webPages.razor” type=”System.Web.WebPages.Razor.Configuration.RazorWebSectionGroup, System.Web.WebPages.Razor, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35″> <section name=”host” type=”System.Web.WebPages.Razor.Configuration.HostSection, System.Web.WebPages.Razor, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35″ requirePermission=”false” /> <section name=”pages” type=”System.Web.WebPages.Razor.Configuration.RazorPagesSection, System.Web.WebPages.Razor, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35″ requirePermission=”false” /> </sectionGroup> </configSections> <system.web.webPages.razor> <host factoryType=”System.Web.Mvc.MvcWebRazorHostFactory, System.Web.Mvc, … Read more
change public class LinqHelper to public static class LinqHelper Following points need to be considered when creating an extension method: The class which defines an extension method must be non-generic, static and non-nested Every extension method must be a static method The first parameter of the extension method should use the this keyword.
For the moment it is still not supported out of the box by Roslyn compiler … Until now, the extension properties were not seen as valuable enough to be included in the previous versions of C# standard. C# 7 and C# 8.0 have seen this as proposal champion but it wasn’t released yet, most of … Read more