This code write to the file testfile

Dim myWriter As New IO.StreamWriter(testfile)
        For Each myItem As ListViewItem In ListView1.Items
            myWriter.WriteLine(myItem.Text & "#" & myItem.SubItems(1).Text & "#" & myItem.SubItems(2).Text & "#" & myItem.SubItems(3).Text)
        Next

But this code does not write to the file

SPNeeds although there is no error message
Both uses private varables
Dim myWriter As New IO.StreamWriter(SPNeeds)
        For Each myItem As ListViewItem In Needit.Items
            myWriter.WriteLine(myItem.Text & "#" & myItem.SubItems(1).Text & "#" & myItem.SubItems(2).Text & "#" & myItem.SubItems(3).Text)
        Next