Home
>
Software
>
.NET :Solving the Multiple Inheritance Issue Under .NET Platform

.NET :Solving the Multiple Inheritance Issue Under .NET Platform

.NET platform does not support multiple inheritance. Do not confuse multilevel inheritance with multiple inheritance. With multiple inheritance we can have a subclass that inherits from two classes at the same time.

Let's suppose we have an application that has a class Customers and another class Vendors. If you wanted to combine these two classes into one CustomerVendor class it would be a combination of Customers and Vendors just like the diagram below.

Please copy the following URL into your browser to view the diagram: http://www.vbprofs.com/images/Article Images/ThomasArt1.gif

In the above diagram we see how the CustomerVendor class inherits from both of those classes.

Multiple inheritance is complex and can be dangerous. The advantages of code re-usage prevail over complexity is up to your choice.

Multiple inheritance is not supported by VB.NET or .Net platform. Instead of multiple inheritance we can use multiple interfaces to achieve similar effect to multiple inheritance.

In VB.NET all objects have a primary or native interface, which is composed of properties, events, methods or member variables declared using Public keyword. Objects can implement also secondary interfaces by using Implement keyword.

Sometimes it is helpful for an object to have more than one interface, allowing us to interact with the object in different ways. Inheritance allow us to create subclasses that are a specialized case of the base class.

Example

Sometimes we have a group of objects that are not the similar, but we want to handle them the same manner. We want all the objects to act as if they are the same, even though they are different.

We can have some different objects in an application, such as customer, product, invoice etc. Each object would have a default interface appropriate to each individual object, and each of them is a different class. No natural inheritance is implied between these classes. Let's suppose we want to print a document for each type of object. In this case we'd like to make them all act as printable object. To accomplish this we can define a generic interface that would enable generating a printed document. By implementing a common interface we are able to write a routine that accepts any object that implements a printed document.

To conclude, by implementing multiple interfaces in VB.NET , we can achieve a similar effect to that of multiple inheritance.

Thomas is an experienced Visual Basic developer, with expertise of 7+ years developing especially financial applications. His main IT skills are VB, SQL, Crystal Reports - should you need a Visual Basic developer for your projects feel free to contact Thomas through his personal website kaloyani.com or through kaloyani.com - the newest kaloyani.com portal.

Mokena prom limo .. Lockport Chicago limo O’Hare

In The News:

Tech expert Kurt “CyberGuy" Knutsson urges you to use Apple’s App Privacy Report to see what your apps are really up to.

Tech expert Kurt “CyberGuy" Knutsson talks about how to smoothly transfer your data from an old laptop to a new one using cloud storage or external drives.

Kurt the CyberGuy offers tips to safeguard your personal information as scammers become more sophisticated with scam texts and other methods.

WeRide's unmanned electric delivery van, the Robovan W5, has 194 cubic feet of cargo space and can carry payloads up to about 2,205 pounds

Kurt the CyberGuy recommends deleting 16 browser extensions immediately in response to a report saying more than 3.2 million web users were affected by a security breach.

Stay up to date on the latest AI technology advancements and learn about the challenges and opportunities AI presents now and for the future.

A robotics firm in China claims a robot has performed the world's first humanoid robot front flip, which is significantly more difficult than a backflip.

A digital ID may be even more secure than a physical ID. Storing your driver's license in your Apple Wallet is an ideal solution for commuters.

A cybersecurity firm has shed some light on just how common tax scams have become. Kurt the CyberGuy offers his advice for how to protect your refund.

Lifesize Plans offers immersive walk-throughs that allow customers the opportunity to tour a home's design before construction actually begins.

Stay up to date on the latest AI technology advancements and learn about the challenges and opportunities AI presents now and for the future.

A man invested $4 million in bitcoin and lost it all with a single click when he was targeted by a vishing scam, which uses phone calls to trick people.

Expandable's Touchdown is a designer trailer that promises a luxury off-grid living experience and unfolds into a home in about 15 minutes.

Major employee screening company data breach affects 3.3 million people. Tech expert Kurt “CyberGuy" Knutsson explains what happened and gives five ways to protect your data.

Kurt “CyberGuy" Knutsson reveals mind-blowing tech that gives you sunlight on demand.

New malware "FrigidStealer" targets Mac computers. Tech expert Kurt “CyberGuy" Knutsson offers four ways to stay safe from infostealer malware.

Kurt “CyberGuy" Knutsson talks about how lab-grown muscles power a biohybrid hand for scalable prosthetics and research.

Reports of task scams have significantly risen in the past four years, according to the Federal Trade Commission. Kurt the CyberGuy offers some red flags.

iPhones have a hidden folder that eats up storage without you knowing it. Kurt the CyberGuy offers some tricks to free up storage on your device.

A recent ransomeware attack targeted Zacks, an American investment firm, and a cybercriminal claimed to have stolen records for millions of customers.

Stay up to date on the latest AI technology advancements and learn about the challenges and opportunities AI presents now and for the future.

Researchers unveiled a new soft prosthetic hand that combines the natural coordination patterns of our fingers with the decoding of motoneuron activity in the spinal column.

Accidentally deleting a text message on your iPhone or iPad is not a problem if you still need the message. Apple has a built-in way to recover it.

Just two months into 2025 there have been numerous Mac malware threats targeting Apple laptops, ranging from infostealers to malicious software.

A self-driving electric bus powered by artificial intelligence has an electric powertrain for zero-emission operation and an automated drive system.

.NET :Solving the Multiple Inheritance Issue Under .NET Platform

Software