Ejemplo de las propiedades EOS y LineSeparator y del método SkipLine (VB)

En este ejemplo se muestra cómo manipular las secuencias de texto de una línea a la vez. El efecto de cambiar el separador de líneas desde el retorno de carro predeterminado o el salto de línea (adCRLF) a simplemente el salto de línea (adLF) o el retorno de carro (adCR).

'BeginSkipLineVB  
Private Sub cmdSkipLine_Click()  
    On Error GoTo ErrorHandler  
  
    'Declare variables  
    Dim i As Integer  
    Dim objStream As Stream  
    Dim strLine, strChar As String  
  
    'Instantiate and open stream  
    Set objStream = New Stream  
    objStream.Open  
  
    'Set line separator to line feed  
    objStream.LineSeparator = adLF  
  
    'Load text content of list box into stream  
    'One line at a time  
    For i = 0 To (List1.ListCount - 1)  
        objStream.WriteText List1.List(i), adWriteLine  
    Next  
  
    'Display the entire stream  
    Debug.Print "Whole Stream:"  
    objStream.Position = 0  
    Debug.Print objStream.ReadText  
  
    'Display the first line  
    Debug.Print "First Line:"  
    objStream.Position = 0  
    strLine = objStream.ReadText(adReadLine)  
    Debug.Print strLine  
    Debug.Print "Line length: " + Str(Len(strLine))  
  
    'Skip a line, then display another line  
    Debug.Print "Third Line:"  
    objStream.SkipLine  
    strLine = objStream.ReadText(adReadLine)  
    Debug.Print strLine  
    Debug.Print "Line length: " + Str(Len(strLine))  
  
    'Switch line separator to carriage return  
    'All items from list will be considered one line  
    'Assuming no CRs have been loaded into stream  
    Debug.Print "Whole Stream/First Line:"  
    objStream.Position = 0  
    objStream.LineSeparator = adCR  
    strLine = objStream.ReadText(adReadLine)  
    Debug.Print strLine  
    Debug.Print "Line length: " + Str(Len(strLine))  
    Debug.Print "Stream size: " + Str(objStream.Size)  
  
    'Use EOS to Determine End of Stream  
    Debug.Print "Character by character:"  
    objStream.Position = 0  
    Do Until objStream.EOS  
        strChar = objStream.ReadText(1)  
        Debug.Print strChar  
    Loop  
  
    ' clean up  
    objStream.Close  
    Set objStream = Nothing  
    Exit Sub  
  
ErrorHandler:  
    ' clean up  
    If Not objStream Is Nothing Then  
        If objStream.State = adStateOpen Then objStream.Close  
    End If  
    Set objStream = Nothing  
  
    If Err <> 0 Then  
        MsgBox Err.Source & "-->" & Err.Description, , "Error"  
    End If  
End Sub  
  
Private Sub Form_Load()  
    List1.AddItem "This is the first line"  
    List1.AddItem "This is the second line"  
    List1.AddItem "This is the third line"  
End Sub  
'EndSkipLineVB  

Consulte también

Propiedad EOS
Separador de línea (propiedad, ADO)
Método SkipLine