 Private Sub cmdSubmit_Click()
Dim Msg As Currency, Pronoun As Single
'Check to make sure full name entered’
If txtName.Text = "" Then
 MsgBox "Registration requires a name.", vbOKOnly + vbCritical, "No Name Entered"
 Exit Sub
End If
'Check to make sure matric number entered
If txtMatric.Text = "" Then
 MsgBox "Registration requires a matric number.", vbOKOnly + vbCritical, "No Matric Number Entered"
 Exit Sub
End If
'Check to make sure phone number entered
If cmdPhone.Text = "" Then
 MsgBox "Registration requires phone number.", vbOKOnly + vbCritical, "No Phone Number Entered"
 Exit Sub
End If
'Check to make sure email entered
If txtEmail.Text = "" Then
 MsgBox "Registration requires email.", vbOKOnly + vbCritical, "No Email Entered"
 Exit Sub
End If
'Confirmation to continue
Result = MsgBox("Do you want to continue?", vbYesNo + vbQuestion)
If Result = vbYes, Then
MsgBox "Thank you for your cooperation.", vbOKOnly + vbInformation, "Registration Successful"
Else: MsgBox "Feel free to edit anything.", vbOKOnly + vbInformation, "Registration Cancelled"
 Exit Sub
End If
If textSubmit = True, Then
Dim frmRegisteratioForm As New Form2
Me.Hide
Form2.Show
Form2.LabelName = txtName.Text
Form2.TextMatrix = txtMatric.Text
Form2.LabelSchool = txtSchool.Text
Form2.LabelPhone = txtPhone.Text
Form2.LabelEmail = txtEmail.Text
End If
End Sub
Private Sub Form_Load()
'Load combo box with potential school names
School.AddItem "School of Electrical and Electronic Engineering"
School.AddItem "School of Materials and Mineral Resources Engineering"
School.AddItem "School of Aerospace Enginering"
School.AddItem "School of Chemical Engineering"
School.AddItem "School of Civil Engineering"
School.AddItem "School of echanical Engineering"
End Sub
Private Sub Matric_KeyPress(KeyAscii As Integer)
'Only allow number keys, or backspace
If (KeyAscii >= vbKey0 And KeyAscii <= vbKey9) Or KeyAscii = vbKeyDecPt Or KeyAscii = vbKeyBack
Then
Exit Sub
Else
KeyAscii = 0
Beep
End If
End Sub
Private Sub txtPhone_KeyPress(KeyAscii As Integer)
'Only allow number keys, or backspace
If (KeyAscii >= vbKey0 And KeyAscii <= vbKey9) KeyAscii = vbKeyDecPt Or KeyAscii = vbKeyBack Then
Exit Sub
Else
KeyAscii = 0
Beep
End If
End Sub

created 3 years ago

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