Visual Basic stores code in 3 kinds of modules: describe each one of them using examples toillustrate
Question
Visual Basic stores code in 3 kinds of modules: describe each one of them using examples to illustrate
Solution
Sure! In Visual Basic, code is stored in three types of modules: standard modules, class modules, and form modules.
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Standard Modules:
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Standard modules are used to store general-purpose code that can be accessed from anywhere in the project.
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They are typically used to define global variables, constants, and functions that are used throughout the application.
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Here's an example of a standard module in Visual Basic:
Module MyModule Public Const PI As Double = 3.14159 Public Function CalculateArea(radius As Double) As Double Return PI * radius * radius End Function End Module
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In this example, the standard module "MyModule" defines a constant "PI" and a function "CalculateArea" that calculates the area of a circle.
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Class Modules:
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Class modules are used to define custom objects with their own properties, methods, and events.
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They encapsulate related code and data into a single unit, making it easier to manage and reuse.
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Here's an example of a class module in Visual Basic:
Public Class Employee Public Property Name As String Public Property Age As Integer Public Sub New(name As String, age As Integer) Me.Name = name Me.Age = age End Sub Public Sub DisplayInfo() Console.WriteLine("Name: " & Name) Console.WriteLine("Age: " & Age) End Sub End Class
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In this example, the class module "Employee" defines properties for name and age, a constructor to initialize the object, and a method to display the employee's information.
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Form Modules:
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Form modules are used to define the behavior and appearance of a user interface form.
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They contain event handlers, controls, and code that interact with the user and perform actions based on user input.
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Here's an example of a form module in Visual Basic:
Public Class MainForm Private Sub btnSubmit_Click(sender As Object, e As EventArgs) Handles btnSubmit.Click Dim name As String = txtName.Text Dim age As Integer = CInt(txtAge.Text) Dim employee As New Employee(name, age) employee.DisplayInfo() End Sub End Class
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In this example, the form module "MainForm" contains a button click event handler that retrieves the values entered in text boxes, creates an instance of the "Employee" class, and displays the employee's information.
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These three types of modules in Visual Basic provide different ways to organize and structure code based on its purpose and functionality.
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