Visual Basic .NET Structured Programming

Introduction to Structured Programming in VB.NET

Structured programming is a programming paradigm that emphasizes the use of modular control structures like sequential, selection (if-then-else), and iteration (loops) to create well-organized and maintainable code. VB.NET strongly supports structured programming principles, making it easier to understand and debug your programs.

Key concepts include:

  • Sequential Execution: Code is executed line by line, in the order it appears.
  • Conditional Statements (if-then-else): Allows code to execute different blocks based on conditions.
  • Loops (For, While, Do While, Do Until): Repeats a block of code multiple times.
  • Modules and Classes: Organize code into reusable components.
Control Flow Statements

VB.NET provides various control flow statements to manage the execution of your code. These statements control the order in which code blocks are executed.


// If-Then-Else Example
Dim num As Integer = 10

If num > 0 Then
    Console.WriteLine("Positive")
Else
    Console.WriteLine("Non-positive")
End If

// For Loop Example
For i As Integer = 1 To 5
    Console.WriteLine("Iteration: " & i)
Next i
Modules and Classes

Structuring your code using modules and classes promotes reusability and maintainability. A module is a container for code, while a class defines a blueprint for creating objects.


' Module Example
Module MyModule
    Sub Main()
        Console.WriteLine("Hello from MyModule!")
    End Sub
End Module