Simple question using NEW

[JAKSupport]

Its been a while...

So I wrote up a class file..compiled to a dll in vb.net..just a simple example..here is the actual class:

Public Class Ticket
    Private lngTicketID As Long
    Private dtOpenDate As Date
    Private dtTargetDate As Date
    Private dtClosedDate As Date
    Private strTicketDescription As String
    Private strAssignedTo As String

    Public Sub New()
        lngTicketID = GetNextTicketID()
        dtOpenDate = Format(Now, "dd-MMM-yy")
        dtTargetDate = DateAdd(DateInterval.Day, 7, dtOpenDate)
        dtClosedDate = Nothing
        strTicketDescription = ""
        strAssignedTo = ""
    End Sub
    Public Function GetNextTicketID() As Long
        'do some work...
        GetNextTicketID = 2
    End Function
    Public ReadOnly Property TicketID() As Long
        Get
            Return lngTicketID
        End Get
    End Property

    Public Sub SetClosed()
        dtClosedDate = Format(Now, "dd-MMM-yy")
    End Sub

    Public Sub SetTicketDescription(ByVal strTD As String)
        strTicketDescription = strTD
    End Sub

    Public ReadOnly Property TicketDescription() As String
        Get
            Return strTicketDescription
        End Get
    End Property

End Class

Then I created a win app form to Instantiate this object and work on some methods..I created an array of Ticket.Ticket objects..(not sure why it requires me to say Ticket.Ticket and not just Dim t as Ticket alone is another issue, even though I have imported at the top Imports Ticket.Ticket). In any event when I run the following code:

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim objT1(5) As Ticket.Ticket
        Dim i As Integer = 0

        For i = 0 To objT1.Length - 1
            objT1(i) = New Ticket.Ticket
            objT1(i).SetTicketDescription("Hi - " & i)
            i += 1
        Next

        For i = 0 To objT1.Length - 1
            MsgBox(objT1(i).TicketDescription)
        Next
    End Sub

It sets the ticket descriptions for all five elements..then it goes to the loop to messagebox them, and displays the first one fine (objT1(0) works fine)..then it increments i and tries to display objT1(1) and it fails with System.Null exceptions...why ? I have used the New Ticket.Ticket to allocate each element in the array.

[JAKSupport]

O crap I accidentally incremented i again in the first for loop...nevermind got it..
but regarding the Ticket.Ticket why does it make me type that out twice ?

[MetalKid]

It makes you type it out because your namespace is Ticket. If you didn't specifically set it, it defaults to the project's name (which I assume is Ticket). Since you have a namespace and class that are the same name, it forces you to put the namespace first.

[mpdeglau]

What MetalKid said, isn't exactly true.

You have a namespace name and a class name.

When you import Ticket.Ticket, that means you can access classes, and shared methods in the Ticket class. If you import only Ticket, then anthing in that namespace can be referenced by name only. So in your case, you only want to reference one Ticket (Imports Ticket).