https://docs.microsoft.com/en-us/dotnet/csharp/programming-guide/classes-and-structs/extension-methods 扩展方法可以直接给现有的类扩展方法。扩展方法是静态方法,但是它们像扩展类的实例方法一样被调用。对于用C#、F#、VB写的客户端代码,调用现有类中的方法和扩
As I had previously said I love extension methods and have started using them at multiple places like converting enums to strings. The CSharp 3.0 specification clearly calls out the following in red Extension methods are less discoverable and more limited in functionality than instance methods....
csharp using System; // 定义一个接口 public interface ICalculator { int Add(int a, int b); } // 定义一个扩展类,包含为ICalculator接口定义的扩展方法 public static class CalculatorExtensions { // 扩展方法,为ICalculator接口添加Subtract功能 public static int Subtract(this ICalculator calculator, ...
C#之 VS2008 之 Extension Methods~(为变量添加自己的方法) 从ScottGu's Blogs上看到了关于Vs2008中.NET Framework3.5语言(Jeffry Zhao说这是 C#3.0的特性,自己见识太短了)的新特性,其中有一个叫做Extension Methods http://weblogs.asp.net/scottgu/archive/2007/03/13/new-orcas-language-feature-extension-met...
Enhance the .NET Framework with over 1000 extension methods.Downloads Cheat Sheet Get started by learning C# Extension Methods from cheat sheet. Method Get started by searching from documented extension methods. Online Example Get started by searching and trying some online example Categories Array ...
csharpcode Copy private void ContainingMethod() { // Create an anonymous type var anondata = new { IntegerVal = 1, DoubleVal = 2.0D, DateTimeVal = DateTime.Now, StringVal = "some string" }; // Pass the type to a method ExternalMethod(anondata); } private void ExternalMethod(object...
This adds some extension methods to the IContextChannel class for working with auto-added headers. The headers are stored between calls in an IExtension. csharpcode 复制 public static class AutoHeaderExtension { class AutoHeaderContextExtension : Dictionary<XName, MessageHeader>, IExtension<ICon...
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Similarly to classic extension methods, the emitted implementation methods can be invoked statically. This allows the compiler to disambiguate between extension members with the same name and arity.C# 复制 object.M(); // ambiguous E1.M(); new object().M2(); // ambiguous E1.M2(new object...
By Stephen Preston There’s been a bit of a kerfuffle over on TheSwamp about the use of extension methods in AutoCAD 2013, so I thought I’d write a quick blog post to document some basics here, along with a few useful references. This post is also inten