[RESOLVED] Random Access File New Line
I'm trying to use Random Access File to save records.
My problem is that the next records is saved in the same line, but i need save the record line by line.
This if what i try but don't work:
Sub Grabar()
mascaraquita
elsize = FileLen(App.Path + "\DatosEmpleados.txt")
TotalDeRecords = elsize / 150 'this make a new record
posicion = TotalDeRecords + 1
empleado.SeguroSocial = Me.txtSeguroSocial.Text
filler1 = Space(1)
empleado.Transaccion = Me.txtTransaccion.Text
empleado.LlaveGenerica = Me.txtLlaveGenerica.Text
empleado.Operador = Me.txtOperador.Text
empleado.Terminal = Me.txtTerminal.Text
empleado.FechadeEntrada = txtFechadeEntrada.Text
empleado.HoradeEntrada = Me.txtHoradeEntrada.Text
empleado.numerodetrimestre = Me.cmbanotrimestral.Text
empleado.Codigo = Me.txtCodigo.Text
empleado.SalariodeEmpleado = Me.txtSalariodeEmpleado.Text
empleado.NumerodeCuenta = Me.txtNumerodeCuenta.Text
filler2 = Space(4)
empleado.CodigoDot = Me.txtCodigoDot.Text
filler3 = Space(2)
empleado.Indicador = Me.txtIndicador.Text
empleado.NumerodeBatch = Me.txtNumerodeBatch.Text
empleado.FechadeEfectividad = Me.txtFechadeEfectividad.Text
empleado.CodigodeBatch = Me.txtCodigodeBatch.Text
empleado.CodigodePagina = Me.txtCodigodePagina.Text
empleado.CodigodeOriginacion = Me.cmbCodigodeOriginacion.Text
empleado.NombredelEmpleado = Me.txtNombredelEmpleado.Text
empleado.InicialdelEmpleado = Me.txtInicialdelEmpleado.Text
empleado.ApellidoPaterno = Me.txtApellidoPaterno.Text
empleado.ApellidoMaterno = Me.txtApelidoMaterno.Text
filler4 = Space(4)
filler5 = vbCrLf ' filler5 As String * 2
Open App.Path + "\DatosEmpleados.txt" For Random As #2 Len = Len(empleado)
Put #2, posicion, empleado
Close #2
End Sub
How to save in the Text File this line by line?
Re: Random Access File New Line
What is your type definition for empleado?
Do you need random access or could you just use the append and print# methods?
What is this calling ?
Re: Random Access File New Line
empleado as EmpleadoTipo
Type EmpleadoTipo
SeguroSocial As String * 9
filler1 As String * 1
Transaccion As String * 2
LlaveGenerica As String * 4
Operador As String * 8
Terminal As String * 4
FechadeEntrada As String * 6
HoradeEntrada As String * 6
numerodetrimestre As String * 3
Codigo As String * 1
SalariodeEmpleado As String * 7
NumerodeCuenta As String * 9
filler2 As String * 4
CodigoDot As String * 8
filler3 As String * 2
Indicador As String * 1
NumerodeBatch As String * 6
FechadeEfectividad As String * 6
CodigodeBatch As String * 3
CodigodePagina As String * 3
CodigodeOriginacion As String * 2
NombredelEmpleado As String * 16
InicialdelEmpleado As String * 1
ApellidoPaterno As String * 16
ApellidoMaterno As String * 16
filler4 As String * 4
filler5 As String * 2
End Type
Function mascaraquita()
txtFechadeEntrada.Text = Format(Me.Maskfechadeentrada.Value, "yyMMdd")
Me.txtFechadeEfectividad.Text = Format(Me.Maskfechadeefectividad.Value, "yyMMdd")
End Function
I need use Random to updated records created.
Thanks any help or suggestion is very appreciate.
Re: Random Access File New Line
Your size and position calculations seem doubtful to me.
Code:
elsize = FileLen(App.Path + "\DatosEmpleados.txt")
TotalDeRecords = elsize / 150 'this make a new record
posicion = TotalDeRecords + 1
At least total records should be elsize / Len(empleado)
Re: Random Access File New Line
Actually the Len is ok [as long as the type def is not altered] and the code is creating the records but it is not inserting the CRLF so it is just one big run on line.
Code:
filler5 = vbCrLf ' filler5 As String * 2
Should be
Code:
empleado.filler5=vbCrLf
If option explicit were enabled this would have been flagged right away by the IDE.
Same issue with other instances of filler vars in that code block.
Always use Option Explicit and you will not run into these short of issues very often and when you do you will see them right away.
Re: Random Access File New Line
Code:
filler5 = vbCrLf ' filler5 As String * 2
' filler5 As String * 2 this is a comment
Code:
elsize = FileLen(App.Path + "\DatosEmpleados.txt")
TotalDeRecords = elsize / 150 'this make a new record
posicion = TotalDeRecords + 1
What I can try to the variable posicion.
I upload my project for a few days, look of what happen in the Text File.
Don't fill the Hora de Entrada maskeditcontrol,is not working for now.
This is the zip:
http://www.4shared.com/zip/wvFKGVIN/..._Basic_6.html?
Any Help or Suggestion is very appreciate.
Re: Random Access File New Line
You should be using a database, if you have a lot of records (requiring RANDOM access). Otherwise, for a few hundred, just read them ALL at once. When you update, write them ALL again.
With your method, entering too LONG a textbox field will overwrite your filler spaces. Otherwise, use comma delimited fields.`
Here's a DB example.
Re: Random Access File New Line
What happen is that I need a text file that are specification for the declaration of salary.
I don't know why the next record continue in the same line and I can't find forums threads with similar errors.
I going to check the max length of the controls maybe I forget something there.
Re: Random Access File New Line
Quote:
Originally Posted by
pcfry
Code:
filler5 = vbCrLf ' filler5 As String * 2
' filler5 As String * 2 this is a comment
Code:
elsize = FileLen(App.Path + "\DatosEmpleados.txt")
TotalDeRecords = elsize / 150 'this make a new record
posicion = TotalDeRecords + 1
What I can try to the variable posicion.
I upload my project for a few days, look of what happen in the Text File.
Don't fill the Hora de Entrada maskeditcontrol,is not working for now.
This is the zip:
http://www.4shared.com/zip/wvFKGVIN/..._Basic_6.html?
Any Help or Suggestion is very appreciate.
You did not pay attention.
I know the latter part of the line is a comment, I am a professional afterall. The first part of that line is where your error is.
I pointed out the problem and you seem to totally miss it.
Once again it should be
Code:
empleado.filler5=vbCrLf
You are assigning a bogus var named filler5 with a crlf expecting it to go into your file but that will never happen. You have repeated the same error with all of your filler vars in that block of code. Since the filler vars are not defined in the sub routine then either they are defined as form level, public or not at all and if the latter case that means you are not using Option Explicit which should always be used without exception.
Your data is being written to the file in the correct position but no new line characters since you have not assigned them to the correct var in your type structure.
If I am correct and you have not defined Filler5 as string somewhere outside your type statement then if Option Explicit was turned on your IDE would have given you the message Variable not defined and pointed you directly to the problem. The only reason not to use Option Explicit is if you want to be lazy and in the end it will backfire on you almost every time.
Re: Random Access File New Line
You are working on an assumption that each line has a length of 150 characters
Thats fine so long as you guarantee each field has a fixed length, with the total adding up to 150 characters (or less)
You are assuming this is the fact, but I can see no code which ensures each text field is a fixed length
For example, if you wanted a field called NAME to always take 35 characters in a line of data, Followed by a 10 Character REFERENCE, then you have to do something like this
Code:
Private S35 As String * 35
Private S10 As String * 10
Private RecordToWrite as String
Private Sub MakeLine
RecordToWrite = "" 'clear output buffer
S35 = Name.Text
RecordToWrite = RecordToWrite & S35
S10 = Reference.Text
RecordToWrite = RecordToWrite & S10
End Sub
However, this is a tricky way to handle your problem
Database as recommended would be ideal
Re: Random Access File New Line
Quote:
Originally Posted by
dglienna
You should be using a database, if you have a lot of records (requiring RANDOM access). Otherwise, for a few hundred, just read them ALL at once. When you update, write them ALL again.
With your method, entering too LONG a textbox field will overwrite your filler spaces. Otherwise, use comma delimited fields.`
Here's a DB example.
I agree that it is better to use a database in most cases.
However If you want a single record and you know where it is RA is the fastest way to go, I'm sure db engines use it behind the scenes.
Also the assumption that a longer text would over write the filler vars is incorrect. The strings are defined as a specific length and will always be written that way. If the text in the text box is shorter then it will be padded and if the text is longer then only the first x characters will be used according to the defined string length of the field.
@George: The type declaration in post #3 shows that it is a fixed length data structure of 150 bytes.
Re: Random Access File New Line
Except
Code:
empleado = new empleado
Or, from somewhere else?
Re: Random Access File New Line
Quote:
Originally Posted by
dglienna
Except
Code:
empleado = new empleado
Or, from somewhere else?
:confused:
The code works aside from the fact that the 5 filler vars are not properly assigned so are written to the file without thier assigned values. Still writes 150 byte records to the file.
The OP likely did not notice that the data was being written due to the fact there are no line feeds. If opened in notepad without word wrap turned on it would appear to never change unless you look closely :)
With wordwrap it would be clear that the file is growing and if just that one line I pointed out is changed to use the definition rather than the bogus var a new line will show for each record.
I've did a lot of work in the past with RA files, not so much the last few years but back in the 90s I used them a lot.
Edit: There is a missing Dim statement in post#3 I assume that is just a copy/paste error as it would not run at all as is in the post.
Re: Random Access File New Line
DataMiser my apologies had not noticed that, thanks for help me with this.
This was a fast response time.
Thanks all
