' Learn how to use a for loop.
' You should always use a for loop when the amount of repetitions is known.

Public Class Form1
    Inherits System.Windows.Forms.Form

    Private Sub Form1_Load(ByVal sender As System.Object, _
    ByVal e As System.EventArgs) Handles MyBase.Load
        'display the numbers from 0 to 9
        Dim i As Integer
        For i = 0 To 9
            TextBox1.Text = TextBox1.Text & i & ","
        Next i
    End Sub

End Class

' Let us take a closer look at our for loop:
'----------------------------------------------------------------
'    For i = 0 To 9
'        TextBox1.Text = i
'    Next i
'----------------------------------------------------------------
' For   - for loop

' i     - use i as our integer

' 0     - start value = 0

' To    - between start and stop value

' 9     - stop value = 9

' Next  - go to next step (if i < 9 then end for loop)
'----------------------------------------------------------------
'Description:
' The for loop will loop from the given start walue to the given stop value.
' The amount of loops will then be 10 (first loop i=0).
'-----------------------------------------------------------------------------