Close Statement
Cierra un archivo especificado que se abrió con la instrucción Open.

Close [[#]fileNum [, [#]fileNum2 [,...]]]
fileNum: Any integer expression that specifies the number of the data channel that was opened with the Open statement.
Sub ExampleWorkWithAFile
Dim iNumber As Integer
Dim sLine As String
Dim aFile As String
Dim sMsg As String
aFile = "c:\data.txt"
iNumber = Freefile
Open aFile For Output As #iNumber
Print #iNumber, "Este es un renglón de texto"
Print #iNumero, "Esta es otra línea de texto"
Close #iNumber
iNumber = Freefile
Open aFile For Input As iNumber
While Not eof(iNumber)
Line Input #iNumber, sLine
If sLine <>"" Then
sMsg = sMsg & sLine & chr(13)
End If
Wend
Close #iNumber
MsgBox sMsg
End Sub