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How to delete rows in a csv file?
I got it working using Crash's approach. Thanks!
""Crash" Dummy" wrote in message ... I have a vbscript that appends data to a csv file on a daily basis. When new data gets appended to the bottom rows of the file, I'd like the oldest data in the top rows to be deleted. Does anyone know how I can delete the top 3 rows every time the file gets appended? Here's what I've got so far: Unfortunately, you can not read/write with random access to a file from VBScript. You can, however, edit the contents of one file while copying it to a second file, or while the complete file is in memory. As usual, there are several ways to do it.How exactly you do it depends on how big the file is and on personal preference. Here is how I might do it, using the example code you posted: 'your code Set WshNetwork = WScript.CreateObject("WScript.Network") Set fsoOut = CreateObject("scripting.filesystemobject") Set outFile = fsoOut.OpenTextFile("MyFile.csv", ForAppending, True) outFile.writeline (Now & "," & DataValue) outFile.close 'added code Set inFile= fsoOut.OpenTextFile("MyFile.csv", ForReading, True) Set tempFile=fso.CreateTextFile("MyFile.tmp") for n=0 to 2:inFile.skipLine:next do until inFile.AtEndOfStream line=inFile.readLine tempFile.writeLine line loop inFile.close tempFile.close fsoOut.deleteFile "MyFile.csv" fsoOut.moveFile "MyFile.tmp", "MyFile.csv" -- Crash |
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