Line Input# Statement

Reads a line from a sequential file into a variable.

Sintaxe:

Line Input Statement diagram


Line Input #fileNum, variable

Parâmetros:

fileNum: Number of the file that contains the data that you want to read. The file must have been opened in advance with the Open statement using the key word INPUT.

variable: The name of the variable that stores the result.

Através da instrução Line Input#, é possível ler cadeias de um ficheiro aberto para uma variável. As variáveis de cadeia são lidas linha a linha até à primeira mudança de linha (Asc=13) ou avanço de linha (Asc=10). As marcas de fim de linha não estão incluídas na cadeia resultante.

Exemplo:


  Sub ExampleWorkWithAFile
      Dim iNumber As Integer
      Dim sLine As String
      Dim aFile As String
      Dim sMsg As String
      aFile = "C:\Users\ThisUser\data.txt"
      iNumber = Freefile
      Open aFile For Output As #iNumber
      Print #iNumber, "Esta é uma linha do texto"
      Print #iNumber, "Esta é outra linha 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


  Sub ExampleWorkWithAFile
      Dim iNumber As Integer
      Dim sLine As String
      Dim aFile As String
      Dim sMsg As String
      aFile = "~/data.txt"
      iNumber = Freefile
      Open aFile For Output As #iNumber
      Print #iNumber, "This is a line of text"
      Print #iNumber, "This is another line of text"
      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

Open Statement

Print# Statement

Write# Statement