c# delegate example

C # differences between delegate and event, In general, a delegate is a class that maintains a field internally and points to a method. An event can be considered as a delegate type variable. Multiple delegates or methods can be registered or canceled through the event. This document describes the differences between t

Because of the project needs, C # needs to call C + + libraries for programming.Today in the process of debugging, suddenly popped up ....The garbage collection delegate for the type has a callback. This can cause application crashes, corruption, and data loss. When you pass a delegate to unmanaged code, the managed ap

I. Entrusted When we need to pass the method as a parameter to other methods, we need to use the delegate. Because sometimes the object we want to manipulate is not the data, but the operation of a method. Let's just start with the code. using System; namespace gosoa.com.cn { 　　 public class test 　　 { 　　　　 public delegate string GetAString(); 　　　　 public static void Main() 　　　　 { 　　　　　　 int x=10; 　　　　　　

syntax of anonymous methods. It is easy to convert an anonymous method to a lambda expression by following these steps. Delete delegate keyword Put the lambda operator between the argument list and the anonymous method BODY = = The following example demonstrates a lambda expressionCalcdelegate myadddelegate = (intint y) + = { + y); } ; = (in

SummaryDelegation is a very important concept in C # programming, and it is also a difficult point. This article will explain the system details of the delegation.1. What is a delegate?In fact, I have been thinking about how to explain the Commission in order to make the delegation more thorough. To tell the truth, everyone has a different opinion because of the angle of the problem. Personally, it can be u

Event is an important concept in Windows-based programming. In almost all Windows applications, a large number of asynchronous calls are involved, such as responding to and Clicking buttons and processing Windows system messages. These asynchronous calls must be completed through events. It is no exception even on the next-generation development platform --. NET.So what is an event? An event is a message sent from an object. The message indicates a specific action or a specific condition. For

references direct to other methods are added to the delegate, these references are stored in the delegate call list, this type of delegation is called multi-channel broadcast delegation. All C # delegates are implicit multicast delegates. To add multiple method references to the call list of a delegate, you can call a

following results:75Purpose of the delegate (Delegate)The following example demonstrates the use of a delegate. The delegate printstring can be used to refer to a method with a string as input and does not return anything.We use this de