• Writing line by line into the file by using the fReadLine function.
• Writing in memory then full backup in a file by using the fSaveText function.

1. Open the file (or create it) with fOpen.
2. Write the line with fWriteLine. fWriteLine automatically adds a CR character at the end of line.
3. Close the file with fClose.

Code samples

• Writing a line:
  
  // Write a simple string
  nFileNum is int
  sLineToWrite is string
   
  nFileNum = fOpen("MyFile.txt", foCreate)
  IF nFileNum <> -1 THEN
  sLineToWrite = "Hello, today is " + DateToString(Today(), "DDDD DD MMMM YYYY")
   
  // Write the line
  fWriteLine(nFileNum, sLineToWrite)
   
  fClose(nFileNum)
  END
  
• Converting a data file into TXT (export)
  
  <code WL>
  nFileNum is int
  sLineToWrite is string
   
  nFileNum = fOpen ("ExportProducts.txt", foCreate)
  IF nFileNum <> -1 THEN
  FOR EACH Product
  // The line is made of:
  // - the product reference
  // - the product caption
  // - the product price
  sLineToWrite = Product.Reference + TAB + Product.ProdCap + TAB +
  NumToString(Product.Price, "10,2fS")
   
  // Write the line
  fWriteLine(nFileNum, sLineToWrite)
  END
  fClose(nFileNum)
  END
  

Principle

1. Declare a string variable.
2. Write and store all the file lines in memory in this variable.
3. Save the content of this variable in a file with fSaveText.

Code samples