em so when a user inputs January the text box is filled with the number 31. I've made both arrays but i'm unable to link them. My Prof says i have to use a for each...next statement that uses linear search .. but i cant for the life of me figure it out. I've tried making MonthName(0) = Monthdays(0) but it did nothing. I also need to use String.Compare if the user misspelled something so it tells them the word didn't match. i'm lost. This is my code so far. Any guidance is appreciated.

Public Class Form1

    Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
        Dim MonthName(11)
        Dim Monthdays(11)
        Dim searchData(11) As Integer

        MonthName(0) = "January"
        MonthName(1) = "February"
        MonthName(2) = "March"
        MonthName(3) = "April"
        MonthName(4) = "May"
        MonthName(5) = "June"
        MonthName(6) = "July"
        MonthName(7) = "August"
        MonthName(8) = "September"
        MonthName(9) = "October"
        MonthName(10) = "November"
        MonthName(11) = "December"

        Monthdays(0) = 31
        Monthdays(1) = 28
        Monthdays(2) = 31
        Monthdays(3) = 30
        Monthdays(4) = 31
        Monthdays(5) = 30
        Monthdays(6) = 31
        Monthdays(7) = 31
        Monthdays(8) = 30
        Monthdays(9) = 31
        Monthdays(10) = 30
        Monthdays(11) = 31

        For i = 0 To searchData.GetUpperBound(0)
            TextBox2.Text = Convert.ToString(Monthdays)
        Next

        If TextBox1.Text = String.Empty Then
            MessageBox.Show("Invald Entry.", "Error", 
                  MessageBoxButtons.OK, MessageBoxIcon.Error)

        End If

    End Sub
End Class

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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