Master VB.NET Past Papers 2025 with Solved Answers | VB.NET Exam Preparation Guide

 

 Long Question

What are the data providers in ADO.NET framework?

Data providers in ADO.NET are components that help applications connect to databases, execute commands, and retrieve or update data. They act as a bridge between the application and the database.

Main Data Providers in ADO.NET

1. SQL Server Data Provider
   Used for Microsoft SQL Server databases.
   Namespace: System.Data.SqlClient
2. OLE DB Data Provider
   Used for databases that support OLE DB.
   Namespace: System.Data.OleDb
3. ODBC Data Provider
   Used for databases that support ODBC drivers.
   Namespace: System.Data.Odbc
4. Oracle Data Provider
   Used for Oracle databases.
   Namespace: System.Data.OracleClient

 

Write down the complete steps for creating windows form Applications?

Steps to Create a Windows Form Application in VB.NET

1. Open Visual Studio
   
2. Create New Project
   
3. Select Project Type
   
4. Enter Project Name
   
5. Click OK/Create
   
6. Design the Form
   
7. Set Properties
   
8. Write Code
   
9. Run the Application
   
10. Save the Project

Enlist Complete steps involve in data binding with data grid view in ADO.NET?

1. Create connection to database.

2. Retrieve data using ADO.NET (DataAdapter or DataReader).

3. Fill data into DataSet.

4. Drag DataGridView control to the form.

5. Set DataSource property of DataGridView to DataSet table.

6. Display and edit data using DataGridView.

 Write down the control statements for VB.NET provides with brief description?

A. Decision Statements

1. If Statement Executes block if condition is true.

2. If...Else Statement Executes one block if true, another if false.

3. Elself Statement - Checks multiple conditions.

4. Select Case Statement Executes block based on value match.

B. Loop Statements

1. For Loop Repeats fixed number of times.

2. While Loop Repeats while condition is true.

3. Do Loop Repeats at least once, then checks condition.