Programming in VB.NET — Lesson 2: Object-Oriented Programming and Application Structure

Learning Objectives

• Create classes, properties, methods, constructors, and encapsulation
• Use inheritance, polymorphism, abstract types, and interfaces
• Organize applications using namespaces, modules, access levels, and reusable components

Detailed Topics

• Create classes: Create classes, properties, methods, constructors, and encapsulation
• Use inheritance: Use inheritance, polymorphism, abstract types, and interfaces
• Organize applications using namespaces: Organize applications using namespaces, modules, access levels, and reusable components

Guided Demonstration

1. Review the requirement, environment, dependencies, roles, risks, and expected outcome.
2. Demonstrate the relevant configuration, analysis, code, or administration workflow step by step.
3. Capture settings, outputs, logs, screenshots, calculations, or test evidence.
4. Compare the observed result with the stated acceptance criteria.

Hands-On Activity

Implement an object-oriented VB.NET business model.

• Document assumptions and the planned sequence before making changes.
• Complete the activity and preserve evidence of normal and exception behavior.
• Record issues, corrective actions, and reusable operational or development notes.

Troubleshooting Focus

• Separate symptoms from causes and collect evidence before applying a fix.
• Check configuration, permissions, data, dependencies, capacity, connectivity, and recent changes.
• Validate rollback, recovery, support ownership, and user or business impact.

Validation Checklist

• The requirement and expected outcome are clear.
• The selected configuration, design, query, code, or process is documented.
• Normal, boundary, failure, security, and operational conditions are reviewed.
• The result is supported by evidence and the next improvement is prioritized.

Lesson Outcome

Learners can explain and apply Object-Oriented Programming and Application Structure in a realistic scenario and validate the result with documented evidence.