Cannot call function within dynamically created form

[john.muckley]

Hey guys,

Hoping someone can help with this problem, its killing me at the moment.

I've got a form called main which has on it a datagridview listing tickets from a database.

when a row is doubleclicked, i create a new instance of form 'TicketDetails' like so...

Dim ThisTicket as new TicketDetails
Show.ThisTicket()

Within 'ThisTicket' there is another datagridview showing the history of the ticket as well as options (called as 'ticketupdate.showdialog') for adding updates.

There is a public function called 'PopulateHistory' within 'TicketDetails' which I call on event ThisTicket.shown.
That works great when you first open ThisTicket, but no matter what I try, I cannot seem to call ThisTicket.populatehistory() from one of my update forms.

I have a 'Confirm Update' button on the ticketupdate form and am trying this...

Private Sub btnConfirmUpdate_Click(sender As Object, e As EventArgs) Handles btnConfirmUpdate.Click
main.writesql(main.escapechars(internalupdateinput.text))        
internalupdateinput.Text = ""
        ThisTicket.populatehistory()

        Me.Close()

    End Sub

But all I get is

'ThisTicket' is not declared or may be inaccessable due to its protection level

The idea is that you open a ticket to view its details and when you submit an update via the updateform, the updateform closes and the dgv for history in ThisTicket refreshes.

It worked fine when I was just using 'TicketDetails.show', but I need TicketDetails to be a multi-instance form.

Can anyone help me out with how I would call back to this function from another form?

Massive thanks in advance for any help!