|
by: IceShock |
last post by:
I have been studying the C# language for sometime now and
i have noticed something about delegates. When are single
cast delegates to be used? even a better question: How do
we define a singlecast delegate?
The thing is I have been using the .net v 1.1 2003 frame
work and i have been told that this might be the issue.
I have been told that in this new framework the SingleCast
delegates are abandoned and that everythin now is
|
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...
|
by: Hazz |
last post by:
In this sample code of ownerdraw drawmode, why does the '(ComboBox) sender'
line of code need to be there in this event handler?
Isn't cboFont passed via the managed heap, not the stack, into this
cboFont_DrawItem event handler? Why does it need to be cast? -hazz
,.................
cboFont.Items.AddRange(FontFamily.Families);
}
private void cboFont_DrawItem(object sender,
|
by: Phil Jones |
last post by:
I think I might be missing something simple/stupid - but I'm trying to get
the delegates that are listed as event handlers for an event from within an
object instance. For example:
Namespace Foo
Public Delegate Sub MyEventHandler(ByVal sender As Object, _
ByVal e As EventArgs)
Public Class MyObject
|
by: 0to60 |
last post by:
More importantly, WHY do I wanna do this?
Well, I have events that I raise asynchronously like this:
foreach(eventhandler handler in eventname.getinvocationlist())
handler.begininvoke();
Now, I'd like to put a callback in there so I can call endinvoke and catch
any exceptions that get thrown in event handling code. Now, to call
endinvoke, you have to save the IAsynchResult returned by begininvoke, and
|
|
by: Bill Woodruff |
last post by:
<
note : this message was sparked in part by comments by David Browne on a
previous thread : "inserting an anonymous method as a value in a generic
dictionary ?" : David had shown the use of 'Delegate as a valid Type
declaration for the Value of a Generic Dictionary.
I am curious as to why I can compile and use this syntax : it seems to me to
violate the requirement that the Value of a Generic Dictionary be a Type
Name.
|
by: Larry Smith |
last post by:
Hi there,
Given a delegate that points to a non-static member function, is there a
cleaner way to change the object instance it's called on other than invoking
"Delegate.CreateDelegate()" (and changing the object instance while leaving
the same member function intact). Thanks in advance.
|
by: matsi.inc |
last post by:
I am looking to make something like a delegate that i can use in my
projects but am having a hard time getting started.
The behavior I am most interested in is how a delegate changes it's
Invoke method dynamically to match the arguments supplied to it when it
is defined. For example...
public delegate void MyDelegate(string myString, int myInt);
|
by: raylopez99 |
last post by:
Inspired by Chapter 8 of Albahari's excellent C#3.0 in a Nutshell
(this book is amazing, you must get it if you have to buy but one C#
book) as well as Appendix A of Jon Skeet's book, I am going through
some LINQ queries. But how to cast? (
See the below, modified from somebody else's code.
The problem is the query 'stops' (throws a cast exception) at "3", and
never gets to "violet".
|
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...
|
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,...
|
|
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...
|
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...
|
by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
|
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();...
|
by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
|
by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
|
|
by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
|