| |
by: david |
last post by:
I have a question (not sure if just a newbie one, or a stupid one)
whose answer I couldn't find on the C# books and tutorials I could put
my hands on.
Consider the following useless class (could be a struct as well, if
you just comment out the non static parameterless constructor) and the
Main() routine :
using System;
|
by: david |
last post by:
Well, as a matter of fact I_HAD_MISSED a basic thing or two, anyway,
although Ollie's answer makes perfectly sense when dealing with
classes, it doesn't seem to me to apply as well if you have to
instantiate an array of structures; consider the following useless
code :
using System;
struct MyPointS
|
by: FredC |
last post by:
S Name Microsoft Windows XP Professional
Version 5.1.2600 Service Pack 2 Build 2600
Total Physical Memory 1,024.00 MB
MDE 2003 Version 7.1.3008
..NET Framework 1.1 Version 1.1.4322 SP1
Microsoft Visual C# .NET 69462-335-0000007-18707
Crystal Reports for Visual Studio .NET AAP50-GS0000S-WCK00C3
The code below shows the instantiation of multiple V47 objects. These
|
by: active |
last post by:
Because of an example I followed I've been instantiating Image objects. Now
I notice that the documentation says the Image class is an abstract base
class.
Things seem to be working! Is the documentation wrong (it also says abstract
classes cannot be instantiated)?
Should I be using Bitmap instead?
Is there a difference between Abstract class and Abstract base class?
|
by: Gary Frank |
last post by:
What are the ramifications if I were to instantiate an object tens of
thousands of times and add them to an array? Or hundreds of thousands of
times? Do you know if the act of instantiating a class takes a lot of
storage or other resources? Would it be a severe performance penalty?
From the .Net help doc:
|
| |
by: DanielNoack |
last post by:
Hi,
I have a problem that I am unable to get an array of objects to
instantiate properly when it is declared with no upper bound. My code
is as follows
dim mParams() as clsParameters
mParams(0) = new clsParameters
produces an error saying mParams is set to nothing however if I change
|
by: Nagesh |
last post by:
hi,
I have seen the winvnc(tightvnc server) source code in this I seen
that class member funtions are calling without instantiating the object
i.e. like vncService::ShowDefaultProperties() where vncService is a
class name not an refrence or instantiated object.
is the above notation is possible or not?if yes how should i declare
that class(vncService) so that i can call without instantiating the
object. If any of u know pls answer to...
|
by: Randy |
last post by:
Hi,
I was learning about RTTI when I ran across this example. This line,
out of the example, confused me. It is declaring a pointer to a base
type and instantiating it with a derived class. I can say the
words ... yet I don't get it. What do I have, a base or a derived? Can
anyone push me in the right direction.
abc *abc_pointer = new xyz();
|
by: raylopez99 |
last post by:
Below is my problem. I've narrowed it down to one thing: my
unfamiliarity on how class instances are instantiated in an array.
This is because the "un-array" / "non-array" version of the program
works fine (see below). So what is the problem? I get a null
reference on the line below at *!&!* "Unhandled Exception:
System.NullReferenceException: Object reference not set to
an instance of an object.?
RL
|
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: 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: 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...
|
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...
|
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: 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
|
2
