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by: Grandma Wilkerson |
last post by:
My question concerns the documentation for Control.BeginInvoke(). At one
point is says:
"Executes the specified delegate asynchronously with the specified
arguments, on the thread that the control's underlying handle was created
on."
later in that same documentation page it says...
"Note The BeginInvoke method calls the specified delegate back on a
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by: arkam |
last post by:
Hi,
I found a sample on internet :
formMain.BeginInvoke(new MyClickHandler(this.OnMyClick));
I would like to do the same but in a class library where there is no forms !
Where can I find a BeginInvoke equivalent for a class library ?
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by: David Sworder |
last post by:
Hi,
I have a form that displays data (is that vague enough for you?). The
data comes in on a thread-pool thread. Since the thread pool thread is not
the same as the UI thread, the callback function of my form follows the
standard design pattern:
if(IsDisposed){
return;
}
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by: Valerie Hough |
last post by:
I'm not entirely sure what the difference is between these two approaches.
In order to avoid reentrant code, I was using Control.BeginInvoke in my UI
to cause an asynchronous activity to be done on the UI's message loop. I
began to get System.ExecutionEngineException errors so (on the theory of do
something different if what you're doing isn't working) I switched to using
delegate.BeginInvoke with the appropriate EndInvoke and the problem...
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by: john doe |
last post by:
I have a question about BeginInvoke method found on the Control class.
To quote the docs:
"Executes the specified delegate asynchronously with the specified
arguments, on the thread that the control's underlying handle was
created on."
Which is fine, but I'm wondering how does this method get called
asynchronously if it's on the same thread we are working on? Surely it
blocks the thread until returned?
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by: RWF |
last post by:
I have a windows form of which I will be saving the user's selections from
DropDownBoxes, CheckBoxes, and RadioButtons. Once the choices are collected,
I really will have no use for any of the controls. Is there a benefit of
using Control.BeginInvoke opposed to ThreadPool.QueueWorkItem? From the
threads I have briefly scanned over on the www, there really is no difference
other. Some have mentioned that ThreadPool.QueueWorkItem maybe...
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by: Flack |
last post by:
Hello,
If I understand BeginInvoke correctly, when it is called your delegate is
run on a thread pool thread. Now, if you supplied a callback delegate, that
too is called on the same thread pool thread.
My question is this: Do I ever need to check the value of InvokeRequired in
my callback method before working with some GUI controls? Won't it always be
required since the callback is running on a thread pool thread? I see some
code...
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by: =?Utf-8?B?a2VubmV0aG1Abm9zcGFtLm5vc3BhbQ==?= |
last post by:
vs2005, c#
Trying to understand why one way works but the other doesnt.
I have not tried to create a simpler mdi/child/showdialog app for posting
purposes (I think even this would not be so small or simple). I am hoping
the description will generate some ideas I can check out.
PROBLEM:
-----------------
Switching to UI thread using Invoke(), everything seems good.
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by: FP |
last post by:
Hi,
i'm currently developing a class to communicate with a serial device,using
the SerialPort component.
Basically,the main application will interact with this class through its
method "Call",the class itself will handle all the details of a call (AT
commands included).
My problem is that i dont want the application to hang while i'm
interacting with the modem,so i have started to learn about threading.
Many people have suggested me to...
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by: Ben Voigt [C++ MVP] |
last post by:
As much as the CLR team assures us that it's ok to fire-and-forget
Control.BeginInvoke, it seems it isn't. Maybe this is a bug.
See for example: the comments in
http://blogs.msdn.com/cbrumme/archive/2003/05/06/51385.aspx
I was encountering a bug that disappeared when debugging. Not when a
debugger is attached, mind you, but when I placed a breakpoint near the
code. Adding Trace.WriteLine statements showed that the failing code was...
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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: 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: agi2029 |
last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
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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: 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...
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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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by: bsmnconsultancy |
last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...
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