string format

[Kalle21]

Option Explicit On
Option Strict On
Public Class workschedule
    Public Sub Start()
        Dim choice As Integer = -1
        While (choice <> 0)
            WriteMenuText()
            choice = Convert.ToInt32(Console.ReadLine)
            Select Case choice
                Case 0
                Case 1
                    Week()
                    Exit Select
                Case 2
                    Nights()
            End Select
        End While
    End Sub
    Public Sub WriteMenuText()

        Console.WriteLine("-------------------------------------------------------")
        Console.WriteLine("                       Work schedule ")
        Console.WriteLine("-------------------------------------------------------")
        Console.WriteLine("      Weekend to work                         :1")
        Console.WriteLine("      Nights to work                          :2")
        Console.WriteLine("      Exit                                    :0")
        Console.WriteLine("-------------------------------------------------------")
        Console.Write("Your choice ")
    End Sub
    Private Sub Week()
        Dim count As Integer = 52
        Dim p As Integer = 0
        Const cols As Integer = 6
        Dim montera As String = ""
        For i As Integer = 6 To count Step 3

            montera += [String].Format("{1,2}", i)
            p += 1
            If (p >= cols) AndAlso (p Mod cols = 0) Then
                Console.WriteLine(montera)
                montera = ""
            End If
        Next
        Console.WriteLine(montera)
        Console.WriteLine("-------------------------------------------------------")
    End Sub
    Private Sub Nights()
        Dim count As Integer = 52
        Dim p As Integer = 0
        Const cols As Integer = 6
        Dim montera As String = ""
        For i As Integer = 1 To count Step 6

            montera += [String].Format("{0,10} {1,2}", i)
            p += 1
            If (p >= cols) AndAlso (p Mod cols = 0) Then
                Console.WriteLine(montera)
                montera = ""
            End If
        Next
        Console.WriteLine(montera)
        Console.WriteLine("-------------------------------------------------------")
    End Sub

End Class

i get a error on this line montera += [String].Format("{0,10} {1,2}", i) Index (zero based) must be greater than or equal to zero and less than the size of the argument list. what do i need to change so it can work?

i want it to look like this in week
6 9 12 15 18 21
24 and so on

[Reverend Jim]

Why not just use

montera += i & " "

[thines01]

You're missing your second argument in the format statement:

String.Format("{0,10} {1,2}", i, SOMETHING_GOES_HERE)