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Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim sourceFile As String = "c:\someFile.txt"
Dim tempFile As String = My.Computer.FileSystem.GetTempFileName
Dim sr As New StreamReader(sourceFile)
Dim sw As New StreamWriter(tempFile)
Dim line As String = sr.ReadLine
While Not IsNothing(line)
If Not line.StartsWith("*****") Then
line = sr.ReadLine
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