Filestream problem

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Hi guys

I see blue line underneat the word FileStream in the following code in
line 2.
Can any one help me to find out what am I missing
Imports System.IO
Imports System.Windows.Forms
Public Class Form1
Inherits System.Windows.Forms.Form

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs)Handles Button1.Click
1 Dim DestinationLoc = "c:\Stream.txt"
2 Dim FS As FileStream = New File.Open(DestinationLoc,
FileMode.OpenOrCreate, _
3 FileAccess.ReadWrite)
4 Dim s As New StreamWriter(FS)
5 s.BaseStream.Seek(0, SeekOrigin.End)
6 s.WriteLine("This is an example of using file handling
concepts in VB .NET.")
7 s.WriteLine("This concept is interesting.")
8 s.Close()

End Sub
End Class

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