What is collection class in Visual Basic?
Collection classes are specialized classes for data storage and retrieval. These classes provide support for stacks, queues, lists, and hash tables. These classes create collections of objects of the Object class, which is the base class for all data types in VB.Net.
How do you add a class in Visual Basic?
To define a class
- Create a project by clicking New Project on the File menu.
- Select Windows Application from the list of Visual Basic project templates to display the new project.
- Add a new class to the project by clicking Add Class on the Project menu.
- Select the Class template.
- Name the new class UserNameInfo.
What is variable collection in VB net?
A variable is nothing but a name given to a storage area that our programs can manipulate. Each variable in VB.Net has a specific type, which determines the size and layout of the variable’s memory; the range of values that can be stored within that memory; and the set of operations that can be applied to the variable.
What are collections how it is different from Array in VB?
Arrays are static in that they don’t grow or shrink as you add/remove items from them. Collections are dynamic in that they grow or shrink as you add and remove items from them.
What is a collection class?
Collections class is used to add all the specified elements to the specified collection. Elements to be added may be specified individually or as an array. Example. Java.
What are the debugging tools in VB?
Using debugging tools
| Debug Menu | Purpose |
|---|---|
| Run to Cursor | When selected the current project will be started and the program run until it reaches the line where the cursor currently is (like a temporary breakpoint). |
| Add Watch | |
| Edit Watch | |
| Quick Watch |
How do we create base class in VB explain with an example?
Inheritance is the idea that one class, called a subclass, can be based on another class, called a base class. Inheritance provides a mechanism for creating hierarchies of objects. For example, a dog is a mammal and a collie is a dog….Table 3.2 VB Keywords Compared to C# Keywords.
| VB.NET | C# |
|---|---|
| Inherits | : |
How do I add a class library to my Web application?
Adding the Class Library to a Web Application Project
- In the File menu, click Add and then click New Project.
- Under Project types, expand Visual Basic or Visual C#, and then click Web to display available Web templates.
- In the Templates box, select ASP.NET Web Application.
What is variable in Visual Basic?
Visual Basic, just like most programming languages, uses variables for storing values. A variable has a name (the word that you use to refer to the value that the variable contains). A variable also has a data type (which determines the kind of data that the variable can store).
What is list in Visual Basic?
In visual basic, List is a generic type of collection so it will allow storing only strongly typed objects i.e. elements of same data type and the size of list will vary dynamically based on our application requirements like adding or removing elements from the list.
What is collection class give an example?
Collections class is basically used with the static methods that operate on the collections or return the collection. All the methods of this class throw the NullPointerException if the collection or object passed to the methods is null.
How do you use collection class?
Java Collections Example
- import java.util.*;
- public class CollectionsExample {
- public static void main(String a[]){
- List list = new ArrayList();
- list.add(“C”);
- list.add(“Core Java”);
- list.add(“Advance Java”);
- System.out.println(“Initial collection value:”+list);