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by: SLE |
last post by:
Hi there,
I know constructors are not inherited from the base class, not in VB.NET nor
C# (nor Java I suppose). I never wondered,but reflecting on the reason why,
I cannot find a solid answer.
Is the reason technical (compiler or CLR limitation) or logical (OOP best
practices)?
Any feedback would be greatly appreciated.
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by: Justin |
last post by:
Hello, first time posting.
If I have a base class and a derived class, is there only one way to
call the base constructor?
i.e. Is this the only way I can call the base constructor (presuming
the base constructor took an int):
Derived::Derived(int a) : Base(a)
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by: PIEBALD |
last post by:
OK, here's my latest workaround for the lack of inherited constructors...
It requires that the class have a parameterless (default) constructor and a
public virtual "Initialize" method (which returns its "this"). An instance
(in this case a Number) is constructed and initialized like so:
Number n = ((Number)((Number)
typeof(Number).GetConstructor(System.Type.EmptyTypes).Invoke(new
object{})).Initialize(1)) ;
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by: M O J O |
last post by:
Hi,
I've created a MasterForm which all my forms in my project must derive from.
In my MasterForm, I've overloaded the New event with this code:
Public Sub New(ByVal SomeText As String)
MyBase.New()
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by: Wayne Brantley |
last post by:
VS2005 RTM
Create a web user control to use as a base class for other web user
controls.
Now, create a new web user control, change the class it inherits from to
your base class and compile.
(You must have a <% Register %> so it will see it)
You will get TWO warnings per class like:
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by: Oleg Subachev |
last post by:
I am moving from Delphi to C# and hve encountered the problem:
I have the following classes and form Load event handler:
public class class1
{
public string S;
public class1( string aS )
{
S = aS;
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by: Mike - EMAIL IGNORED |
last post by:
Within class MyClass, I can think of two ways
to tell if MyClass is inherited in a particular
use:
1. pass an appropriate bool in the ctor args;
2. use a virtual method that returns, for
example, a siring containing the class name.
Is there a better way?
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by: Søren M. Olesen |
last post by:
Hi
How do I create an instance of an object with an inherited cunstructor??
In the below example, I'm able to create an instance of MyClass2 using the
forst two lines of code, however if I try using the next two lines of code
it fails.
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by: lovecreatesbea... |
last post by:
Could you tell me how many class members the C++ language synthesizes
for a class type? Which members in a class aren't derived from parent
classes?
I have read the book The C++ Programming Language, but there isn't a
detail and complete description on all the class members, aren't they
important to class composing? Could you explain the special class
behavior in detail? Thank you very much.
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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: 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: 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...
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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: 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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