How to read a file and write into a text file

Question

I want to open mis file  copy all the data and write into a text file   My mis file   File name     1 mis  M3 3395 44 0 1  20090404 094144 8193 3 0     M3 3397 155 0 2  20090404 105941 8193 3 0     M3 3396 160 0 1  20090404 100825 8193 3 0     M3 3398 168 0 2  20090404 110106 8193 3 0       so on      The above data should appear in a text file with same file name  1 txt    I tried this code   Dim sFileText As String Dim iFileNo As Integer iFileNo   FreeFile Open  C  Clients Converter Clockings mis  For Input As  iFileNo Do While Not EOF iFileNo  Input  iFileNo  sFileText Loop Close  iFileNo  Open  C  Clients Converter 2 txt  For Output As  iFileNo Do While Not EOF iFileNo  Write  iFileNo  sFileText Loop Close  iFileNo   Nothing is saved in 1 txt

User · Answer

FileCopy  1 mis    1 txt

User · Answer

It far easier to use the scripting runtime which is installed by default on Windows  Just go project Reference and check Microsoft Scripting Runtime and click OK   Then you can use this code which is way better than the default file commands  Dim FSO As FileSystemObject Dim TS As TextStream Dim TempS As String Dim Final As String Set FSO   New FileSystemObject Set TS   FSO OpenTextFile  C  Clients Converter Clockings mis   ForReading   Use this for reading everything in one shot Final   TS ReadAll  OR use this if you need to process each line Do Until TS AtEndOfStream     TempS   TS ReadLine     Final   Final  amp  TempS  amp  vbCrLf Loop TS Close  Set TS   FSO OpenTextFile  C  Clients Converter 2 txt   ForWriting  True      TS Write Final TS Close Set TS   Nothing Set FSO   Nothing   As for what is wrong with your original code here you are reading each line of the text file   Input  iFileNo  sFileText   Then here you write it out  Write  iFileNo  sFileText   sFileText is a string variable so what is happening is that each time you read  you just replace the content of sFileText with the content of the line you just read   So when you go to write it out  all you are writing is the last line you read  which is probably a blank line   Dim sFileText As String Dim sFinal as String Dim iFileNo As Integer iFileNo   FreeFile Open  C  Clients Converter Clockings mis  For Input As  iFileNo Do While Not EOF iFileNo    Input  iFileNo  sFileText sFinal   sFinal  amp  sFileText  amp  vbCRLF Loop Close  iFileNo  iFileNo   FreeFile  Don t assume the last file number is free to use Open  C  Clients Converter 2 txt  For Output As  iFileNo Write  iFileNo  sFinal Close  iFileNo   Note you don t need to do a loop to write  sFinal contains the complete text of the File ready to be written at one shot  Note that input reads a LINE at a time so each line appended to sFinal needs to have a CR and LF appended at the end to be written out correctly on a MS Windows system  Other operating system may just need a LF  Chr  10     If you need to process the incoming data then you need to do something like this   Dim sFileText As String Dim sFinal as String Dim vTemp as Variant Dim iFileNo As Integer Dim C as Collection Dim R as Collection Dim I as Long Set C   New Collection Set R   New Collection  iFileNo   FreeFile Open  C  Clients Converter Clockings mis  For Input As  iFileNo Do While Not EOF iFileNo    Input  iFileNo  sFileText   C Add sFileText Loop Close  iFileNo  For Each vTemp in C      Process vTemp Next sTemp  iFileNo   FreeFile Open  C  Clients Converter 2 txt  For Output As  iFileNo For Each vTemp in R    Write  iFileNo  vTemp  amp  vbCRLF Next sTemp Close  iFileNo

User · Answer

An example of reading a file  Dim sFileText as String Dim iFileNo as Integer iFileNo   FreeFile  open the file for reading Open  C  Test txt  For Input As  iFileNo  change this filename to an existing file   or run the example below first    read the file until we reach the end Do While Not EOF iFileNo  Input  iFileNo  sFileText  show the text  you will probably want to replace this line as appropriate to your program   MsgBox sFileText Loop   close the file  if you dont do this  you wont be able to open it again   Close  iFileNo  note  an alternative to Input   is Line Input     which reads whole lines     An example of writing a file  Dim sFileText as String Dim iFileNo as Integer iFileNo   FreeFile  open the file for writing Open  C  Test txt  For Output As  iFileNo  please note  if this file already exists it will be overwritten    write some example text to the file Print  iFileNo   first line of text  Print  iFileNo    second line of text  Print  iFileNo      blank line Print  iFileNo   some more text     close the file  if you dont do this  you wont be able to open it again   Close  iFileNo   From Here

User · Answer

If you want to do it line by line   Dim sFileText As String Dim iInputFile As Integer  iOutputFile as integer  iInputFile   FreeFile Open  C  Clients Converter Clockings mis  For Input As  iInputFile  iOutputFile   FreeFile Open  C  Clients Converter 2 txt  For Output As  iOutputFile  Do While Not EOF iInputFile     Line Input  iInputFile   sFileText      sFileTextis a single line of the original file      you can append anything to it before writing to the other file    Print  iOutputFile  sFileText  Loop Close  iInputFile  Close  iOutputFile

[file-io] How to read a file and write into a text file?

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