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by: GM |
last post by:
Hi,
My application has a need to cache a number of shared reference lists
containing basic business objects. In order to improve performance these
lists are fetched and updated in the background.
When a UI is required to display one of these reference lists it requests it
by name from the cache. If the list already exists in the cache it is
returned to the caller otherwise a brand new empty one is created and
returned. This new empty...
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by: Jedrzej Miadowicz |
last post by:
I have a problem when using ISynchronizeInvoke.BeginInvoke with polymorphic
parameters. It seems that if I try to call BeginInvoke and in the array of
parameters place an object that's derived from a base class my method
expects as a parameter, the method gets only an object of the type of the
base class, rather than my full object.
I know this sounds convoluted, so here's an example. My program consists of
an engine and a WindowsForms...
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by: Tom Dacon |
last post by:
I'm raising an event in a component, using ISynchronizeInvoke.Invoke, and my
event args object contains a string as one of its members. If the string is
longer than 63 bytes, the Invoke call pulls an unhandled exception in
System.Windows.Forms.dll, to the effect that the string length must be less
than 64. If I trim the string to 31 characters (62 bytes) everything's fine
and the event goes as intended. But if the string length is 32 or...
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by: Tim Murray |
last post by:
Hi,
I am creating a multithreaded server application in
Managed C++. Each client that connects to the server will
be running on their own thread to process their input.
They all need to share one instance of a class running on
the main thread. From my understanding, if multiple
threads invoke a function in this object(on the main
thread) using a delegate, there could be problems. I was
trying to figure out how to invoke the functions...
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by: Wavemaker |
last post by:
One of the things I've struggled with from time to time is handling
events raised on different threads. For example, an object could be
listening to events from one or more objects running in different
threads besides itself. There is a concern for thread safety. There are
various ways of dealing with this. One way is to make the class thread
safe by putting in locks. But another way is to stream the events from
the various threads into a...
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by: jherl |
last post by:
I am getting an "Object reference not set to an instance of an object"
when I try to execute the Invoke method. I have it set up as follows:
---
Private _syncObject As System.ComponentModel.ISynchronizeInvoke
..
..
..
Dim args(0) As Object
Dim d As New RaiseReceiveEvent(AddressOf OnReceive)
..
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by: Jeff Stewart |
last post by:
I need a thread to run a subroutine which updates my main form's
progress bar. I've properly marshaled all UI updates to the main UI
thread, and after the main thread starts the worker thread, it waits
for the worker thread to complete by means of a while t.isAlive,
sleep(0) mechanism. But when my worker thread calls my
UpdateProgressBar routine, which calls Me.Invoke, the invoke call
blocks forever. But I can't figure out why the main...
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by: schaf |
last post by:
Hi NG !
I set the CurrentCulture and the CurrentUICulture at the start of my
app using this code:
string sUICulture =
System.Configuration.ConfigurationSettings.AppSettings;
if (sUICulture != null) {
CultureInfo cultInfo = new CultureInfo(sUICulture);
Thread.CurrentThread.CurrentUICulture = cultInfo;
Thread.CurrentThread.CurrentCulture = cultInfo;
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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: 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: 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: 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: 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: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
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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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