  '
  ' Copyright (c) 2002-2003 Mainsoft Corporation.
  '
  ' Permission is hereby granted, free of charge, to any person obtaining a
  ' copy of this software and associated documentation files (the "Software"),
  ' to deal in the Software without restriction, including without limitation
  ' the rights to use, copy, modify, merge, publish, distribute, sublicense,
  ' and/or sell copies of the Software, and to permit persons to whom the
  ' Software is furnished to do so, subject to the following conditions:
  ' 
  ' The above copyright notice and this permission notice shall be included in
  ' all copies or substantial portions of the Software.
  ' 
  ' THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  ' IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  ' FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  ' AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  ' LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  ' FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  ' DEALINGS IN THE SOFTWARE.
  '
Imports Microsoft.VisualBasic
Public Class TestClass
    Public Function Test() As String
        Dim fn As Integer
        Dim location As Long
        Dim wSum As Long
        Dim oneLine As String
        Dim oneChar As Char
        Dim strbuffer As String
        
        '// make sure all files are closed
        Microsoft.VisualBasic.FileSystem.Reset()
        'create and write into file
        fn = FreeFile()
        FileOpen(fn, System.IO.Directory.GetCurrentDirectory() + "/data/6956.txt", OpenMode.append, OpenAccess.Write)
        WriteLine(fn, "abcdefghijklmnopqrstuvwxyz")
        Seek(fn, 10) 'move back to position 10 
        WriteLine(fn, "0123456789")
        Seek(fn, 15) 'move forward position 15 
        WriteLine(fn, "abcdefghijklmnopqrstuvwxyz")
        FileClose(fn)
        'read from file and check the location
        FileOpen(fn, System.IO.Directory.GetCurrentDirectory() + "/data/6956.txt", OpenMode.Binary)
        location = 0
        While Not EOF(fn)
            FileGet(fn, oneChar)
            strbuffer = strbuffer & oneChar
        End While
        FileClose(fn)
        strbuffer = Strings.Replace(strbuffer, vbCr, "")
        strbuffer = Strings.Replace(strbuffer, vbLf, "")
        Return strbuffer
    End Function
End Class
