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by: Jon Davis |
last post by:
The garbage handler in the .NET framework is handy. When objects fall out of
scope, they are automatically destroyed, and the programmer doesn't have to
worry about deallocating the memory space for those objects. In fact, all
the programmer has to worry about is the total sum of objects loaded into
RAM at any known point. Memory leaks are not a problem.
.... So one would like to think. The reality is that delegates and event...
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by: Flare |
last post by:
Hi i have a qusstion about events and delegates. Especially the precis role
of the Event.
Eg. We have a class wich want to fire events so we declare:
public delegate void TestEventHandler(object sender, EventArgs arg);
public event TestEventHandler Test;
And fire the event with
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by: Rhy Mednick |
last post by:
I have a class (let's call it ClassA) that I've written which has events.
In another class (let's call it ClassB) I create a collection of ClassA
objects. In a third class (ClassC) I create a reference to some of the
ClassA objects created in ClassB. In ClassC I hook into the ClassA events
with a foreach loop so that I hook each object. The code is something like
this:
class ClassC {
void SomeMethod()
{
foreach (ClassA item in...
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by: Mark Allison |
last post by:
Hi,
I am new to C# and want to create my own events within a console app.
However I am struggling mentally with this, and have looked at the MSDN
documentation but I am drawing a blank. Is there anywhere on the net
that shows a very basic delegate and a very basic event? Some nice
simple example code is what I'm looking for with no fluff around it.
Thanks!
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by: LP |
last post by:
Hello!
I am still transitioning from VB.NET to C#. I undertand the basic concepts
of Delegates, more so of Events and somewhat understand AsyncCallback
methods. But I need some clarification on when to use one over another? If
anyone could provide any additional info, your comments, best practices, any
good articles, specific examples, etc.
Thank you
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by: Nicky Smith |
last post by:
Hello,
I'm studying a book on VB.net Win apps, and I'm reading a section on
events and delegates and raising events.
Is it just me, or is this not just subs dressed up as something else?
I mean, for one, delegates point to subs, so when you call a delegate,
why not just call the sub dierectly and not bother adding the extra
code involved adding the delegate?
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by: Burkhard |
last post by:
Hi,
I am new to C# (with long year experience in C++) and I am a bit confused by
the language construct of events. What is it I can do with events that I
cannot do with delegates? At the moment it seems to me that Microsoft has
developed similar functionality via two keywords. I do understand that an
event offers better encapsulation as the underlying delegate is private, but
is that all ?
--
Regards
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by: Bryce K. Nielsen |
last post by:
I have an object that starts a thread to do a "process". One of the steps
inside this thread launches 12 other threads via a Delegate.BeginInvoke to
process. After these 12 threads are launched, the main thread waits. At the
completion of each subthread, the mainthread checks all 12 thread objects to
see if they are done. If they are, raise an event that says we're done.
So, it's kinda like this:
ProcessThread
- Creates a ProcessObject
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by: CuriousGeorge |
last post by:
Can someone explain why this code DOES NOT raise a null reference exception?
//////////////////////////// Program.cs
/////////////////////////////////////////////
using System;
using System.Collections.Generic;
using System.Text;
using CSharpLib;
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by: kristian.freed |
last post by:
Hi,
I currently work in a project written fully in C# where we make
extensive use of delegates and events. We have a model where a "state",
an object holding data but not much code but which fires events when
the data changes, is often the central part. Connected to these states
are various observers that act on changes in data, by altering the
information presented to the user, executing code and so on, each
observer with its own...
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by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
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by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
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by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
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by: jinu1996 |
last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth.
The Art of Business Website Design
Your website is...
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by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
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by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
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by: conductexam |
last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.
At the time of converting from word file to html my equations which are in the word document file was convert into image.
Globals.ThisAddIn.Application.ActiveDocument.Select();...
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by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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