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Asked: 2026-05-11T09:59:30+00:00

I want to write some stats to a text file every time a person

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I want to write some stats to a text file every time a person loads a page. But every once in awhile I am getting at ‘Could Not Open File, Already in use’ type of error. I can not 100% replicate this error it is very erratic. My code is 

Public Sub WriteStats(ByVal ad_id As Integer)     Dim ad_date As String = Now.Year & Now.Month      Dim FILENAME As String = Server.MapPath('text/BoxedAds.txt')     Dim objStreamWriter As StreamWriter     objStreamWriter = File.AppendText(FILENAME)     objStreamWriter.WriteLine(ad_id & ';' & ad_date)     objStreamWriter.Close() End Sub

My question is, how can I lock and unlock the file so I stop getting the erratic errors?

Thanks

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1 Answer

  1. You will have to handle the exception and build some handling to re-try writing to the file after a short random interval.

    If you get too much contention then it might make more sense to log it to a table in a database and create a process to export to a file (if its still needed)

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