VB.Net interview questions

VB.Net Interview Questions and Answers
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What is Meta data in VB.Net?

This is information about the content of the data and is normally found in the catalogue of libraries. It is normally used at the backside of the book to see the necessary topics.

VB.Net interview questions: Visual Basic .NET is a multi-paradigm, object-oriented programming language, implemented on the .NET Framework. Microsoft launched VB.NET in 2002 as the successor to its original Visual Basic language.

While appearing for your interview, present yourself gracefully and take time to figure out and plan the answers before you speak. In case you have any doubts about a question, ask the interviewer instead of beating around the bush.

Be confident and approach the day with an optimistic outlook. You are sure to crack the interview.

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Stable release:2019 (16.2) / July 24, 2019; 6 months ago
Typing discipline:Static, both strong and weak, both safe and unsafe, nominative
Developer: Microsoft
License:Roslyn compiler: Apache License 2.0;
Designed by:Microsoft Corporation
Platform: .NET Framework, Mono,.NET Core 3

VB.Net Interview Questions and Answers

Simple example

The following is a very simple VB.NET program, a version of the classic “Hello world” example created as a console application:

Module Module1

    Sub Main()
        ' The classic "Hello, World" demonstration program
        Console.WriteLine("Hello, World!")
    End Sub

End Module

Complex example

This piece of code outputs¬†Floyd’s Triangle¬†to the console:

Imports System.Console

Module Program

    Sub Main()
        Dim rows As Integer

        ' Input validation.
        Do Until Integer.TryParse(ReadLine("Enter a value for how many rows to be displayed: " & vbcrlf), rows) AndAlso rows >= 1
            WriteLine("Allowed range is 2 and {0}", Integer.MaxValue)
        Loop
      
        ' Output of Floyd's Triangle
        Dim current As Integer = 1
        Dim row As Integer 
        Dim column As Integer
        For row = 1 To rows
            For column = 1 To row
                Write("{0,-2} ", current)
                current += 1
            Next

            WriteLine()
        Next
    End Sub

    ''' <summary>
    ''' Shadows Console.ReadLine with a version which takes a prompt string.
    ''' </summary>
    Function ReadLine(Optional prompt As String = Nothing) As String
        If prompt IsNot Nothing Then
            Write(prompt)
        End If

        Return Console.ReadLine()
    End Function

End Module

What are the differences between VB and VB.net?

  • While VB is platform dependent VB.net is not.
  • VB is backward compatible while VB.net is not.
  • Whereas VB is interpreted VB.net uses a compiler.

What is the difference between a class and an object?

A class defines an object while an object is an instance of a class. VB.Net interview questions, This implies that a class describes the properties and behaviors of all objects that are defined within it. A good example of an object is a variable.

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What is a nested class?

A nested class is one that is defined within another class. They are normally considered and used within the scope of the class that is nested.

How can you store and retrieve images in and SQL database server using VB.net?

A programmer can store images on an SQL server using bytes. The image is first converted into a stream of bytes that can be saved in a table using image bytes.

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VB.Net interview questions and answers, What is garbage collection in this context?

A feature that is used to automatically recycle memory that has been assigned to variables dynamically if it is not being used. The tool that performs these tasks is called the garbage collector.

What is the difference between System.String and System.StringBuilder?

System. String is a non-updatable class that creates a new string object instead of updating an existing one.

What is the difference between serialization and deserialization and how are they used?

Serialization is the process of storing vb.net form data into an XML file while deserialization is the process of loading Vb.net form data from an XML file. VB.Net interview questions

What is LINQ?

VB.Net interview questions and answers: LINQ stands for Language Integrated Query.VB.Net interview questions, It is a set of features that was added to VB.net 2008 to add new standard query operators that allow data manipulation regardless of where it is being sourced from.

What is namespace and how is used to access data?

An organized representation of class, structures, and interfaces in the .NET language. They are hierarchically structured indices of a class library that are available to all .NET languages.