Problem sharing object between subs 1

[frumpus]

I am working with a Windows forms application that allows a user to open a file, which the program reads using a textreader object. I can't assign the text reader object to the file until the open file dialog completes, so I am unable to use the text reader object outside of the 'open file' button click event. I need to be able to use it in a function that is called from a timer tick event. Here is the basic setup: (this is very abbreviated to just show the structure)

Partial Class Form1
   
   Dim fs As System.IO.FileStream
   Dim fsReader

----------------------------------

   Private Sub btnOpen_Click()

      fs = dlgOpenFile.OpenFile()
      fsReader = New System.IO.StreamReader(fs) 

   End Sub

----------------------------------

   Private Sub GetNextLine()
      line = fsReader.ReadLine()
   End Sub

----------------------------------

   Private Sub Timer1_Tick()
      GetNextLine()
   End Sub

----------------------------------
End Class

The program builds, but crashes as soon as the form loads and tells me i need to use 'the "new" keyword to create an object instance' of fsReader inside the GetNextLine function. I am assuming that if i do that I will lose the current line I am on in the file and start over at the beginning, which I do not want.

Come somebody give me some advice on how to use the instance defined in the open file sub?

 

[RiverGuy]

Set the Enabled property of your Timer to false.

Then, after this line:
fsReader = New System.IO.StreamReader(fs)

you need this:
Timer1.Start()

 

[Sorwen]

Also change this:

   Private Sub Timer1_Tick()
      GetNextLine()
   End Sub

to at least this:

    Private Sub Timer1_Tick()
        If fs IsNot Nothing Then
            GetNextLine()
        End If
    End Sub

You might want to add an error message and stop the timer if it is nothing.

-I hate Microsoft!
-Forever and always forward.
-My kingdom for a edit button!

 

[Sorwen]

Sorry, fs should be fsReader.

-I hate Microsoft!
-Forever and always forward.
-My kingdom for a edit button!

 

[frumpus]

Bingo! I misunderstood the meaning of the enabled property and didn't realize the timer was running already.

Thanks a ton!

 

[frumpus]

@Sorwen: Yes, I do have that handled I just took it out to keep the example simple. Thanks!