Public Class Form1

Private Sub NewToolStripMenuItem_Click(sender As Object, e As EventArgs) Handles NewToolStripMenuItem.Click
MsgBox("Do you want to save changes.... ", MsgBoxStyle.YesNoCancel)
TextBox1.Text = ""
End Sub

Private Sub OpenToolStripMenuItem_Click(sender As Object, e As EventArgs) Handles OpenToolStripMenuItem.Click
If OpenFileDialog1.ShowDialog = Windows.Forms.DialogResult.OK Then
TextBox1.Text = My.Computer.FileSystem.ReadAllText(OpenFileDialog1.FileName)
End If
End Sub

Private Sub SaveToolStripMenuItem_Click(sender As Object, e As EventArgs) Handles SaveToolStripMenuItem.Click
If SaveFileDialog1.ShowDialog = Windows.Forms.DialogResult.OK Then
My.Computer.FileSystem.WriteAllText(SaveFileDialog1.FileName, TextBox1.Text, False)
End If
End Sub

Private Sub PrintToolStripMenuItem_Click(sender As Object, e As EventArgs) Handles PrintToolStripMenuItem.Click
PrintDialog1.ShowDialog()
End Sub

Private Sub ExitToolStripMenuItem_Click(sender As Object, e As EventArgs) Handles ExitToolStripMenuItem.Click
Me.Close()
End Sub

Private Sub UndoToolStripMenuItem_Click(sender As Object, e As EventArgs) Handles UndoToolStripMenuItem.Click
TextBox1.Undo()
End Sub

Private Sub CopyToolStripMenuItem_Click(sender As Object, e As EventArgs) Handles CopyToolStripMenuItem.Click
TextBox1.Copy()
End Sub

Private Sub PasteToolStripMenuItem_Click(sender As Object, e As EventArgs) Handles PasteToolStripMenuItem.Click
TextBox1.Cut()
End Sub

Private Sub PasteToolStripMenuItem1_Click(sender As Object, e As EventArgs) Handles PasteToolStripMenuItem1.Click
TextBox1.Paste()
End Sub

Private Sub SelectAllToolStripMenuItem_Click(sender As Object, e As EventArgs) Handles SelectAllToolStripMenuItem.Click
TextBox1.SelectAll()
End Sub

Private Sub FontToolStripMenuItem_Click(sender As Object, e As EventArgs) Handles FontToolStripMenuItem.Click
If FontDialog1.ShowDialog = Windows.Forms.DialogResult.OK Then
TextBox1.Font = FontDialog1.Font
End If
End Sub

Private Sub ColorToolStripMenuItem_Click(sender As Object, e As EventArgs) Handles ColorToolStripMenuItem.Click
If ColorDialog1.ShowDialog = Windows.Forms.DialogResult.OK Then
TextBox1.ForeColor = ColorDialog1.Color
End If
End Sub

Private Sub AboutToolStripMenuItem_Click(sender As Object, e As EventArgs) Handles AboutToolStripMenuItem.Click
MsgBox("This Notepad Apllication is developed by student of GPK" & vbCrLf & "Computer branch 2nd year diploma")
End Sub
End Class

Visual basic (VB.net) Online Compiler

Write, Run & Share VB.net code online using OneCompiler's VB.net online compiler for free. It's one of the robust, feature-rich online compilers for VB.net language, running on the latest version 16. Getting started with the OneCompiler's VB.net compiler is simple and pretty fast. The editor shows sample boilerplate code when you choose language as VB.net. OneCompiler also has reference programs, where you can look for the sample code to get started with.

Read input from STDIN in VB.net

OneCompiler's VB.net online editor supports stdin and users can give inputs to programs using the STDIN textbox under the I/O tab. Following is a sample VB.net program which takes name as input and prints hello message with your name.

Public Module Program
	Public Sub Main(args() As string)
	 Dim name as String = Console.ReadLine()    ' Reading input from STDIN
   Console.WriteLine("Hello " & name)           ' Writing output to STDOUT
	End Sub
End Module

About VB.net

Visual Basic is a event driven programming language by Microsoft, first released in the year 1991.

Key Features

  • Beginner's friendly language.
  • Simple and object oriented programming language.
  • User friendly language and easy to develop GUI based applications.

Syntax help

Variables

Variable is a name given to the storage area in order to identify them in our programs.

Simple syntax of Variable declaration is as follows

Dim variableName [ As [ New ] dataType ] [ = initializer ]

Variable initialization

variableName = value

Conditional Statements

1. If

If condition-expression Then 
    'code
End If

2. If-else

If(conditional-expression)Then
   'code if the conditional-expression is true 
Else
  'code if the conditional-expression is false 
End If

3. If-else-if ladder

If(conditional-expression)Then
   'code if the above conditional-expression is true 
Else If(conditional-expression) Then
        'code if the above conditional-expression is true 
    Else
        'code if the above conditional-expression is false 
End If

4. Nested-If

If(conditional-expression)Then
   'code if the above conditional-expression is true
   If(conditional-expression)Then
         'code if the above conditional-expression is true 
   End If
End If

5. Select Case

Select [ Case ] expression
   [ Case expressionlist
      'code ]
   [ Case Else
      'code ]
End Select

Loops

1. For..Next

For counter [ As datatype ] = begin To end [ Step step ]
   'code
   [ Continue For ]
   'code
   [ Exit For ]
   'code
Next [ counter ]

2. For..Each

For Each element [ As datatype ] In group
   'code
   [ Continue For ]
   'code
   [ Exit For ]
   'code
Next [ element ]

3. While

While conditional-expression
   'Code 
   [ Continue While ]
   'Code
   [ Exit While ]
   'Code
End While

4. Do-while

Do { While | Until } conditional-expression
   'Code
   [ Continue Do ]
   'Code
   [ Exit Do ]
   'Code
Loop

Do
   'Code
   [ Continue Do ]
   'Code
   [ Exit Do ]
   'Code
Loop { While | Until } conditional-expression

Procedures

Procedure is a sub-routine which contains set of statements. Usually Procedures are written when multiple calls are required to same set of statements which increases re-usuability and modularity.

Procedures are of two types.

1. Functions

Functions return a value when they are called.

[accessModifiers] Function functionName [(parameterList)] As returnType
   'code
End Function

2. Sub-Procedures

Sub-procedures are similar to functions but they don't return any value.

Sub ProcedureName (parameterList)
'Code
End Sub