I was able to do a work around.
Private Sub FileManipTmr_Tick(sender As Object, e As EventArgs) Handles FileManipTmr.Tick
ManipTickCntr += 1
lblManipTickCntr.Text = ManipTickCntr
hour = DateAndTime.Now.Hour
mins = DateAndTime.Now.Minute
lblHour.Text = hour
lblMins.Text = mins
'Following runs every 30sec
'We have an issue that when new files are created on a new day, the header information
'is not getting added.
Dim monStr, DayStr, YrStr, LogFileName, HeaderFileName As String
'The log file from the data log includes the day, month, and year in the filename.
'We know the root of the filename but need to construct the rest with day, month, yr.
'Get the day, month, and year as strings.
DayStr = DateAndTime.Now.ToString("dd")
monStr = MonthName(DateAndTime.Now.Month, True)
YrStr = DateAndTime.Now.Year
'Construct the full .log file name.
LogFileName = PowerMtrEvntLog.FileFolder + "\" + PowerMtrEvntLog.FileName + "-" + DayStr + "-" + monStr + "-" + YrStr + ".log"
HeaderFileName = PowerMtrEvntLog.FileFolder & "\Header.txt"
txtFilename.Text = LogFileName
[color=red] 'We will check the file for a header only once a day. If the hour before hour 22(10pm) and min >= 5 and we haven't checked it yet.
If (hour < 23) And (mins >= 5) And Not TestHeader Then
TestHeader = True 'Set to true so that we don't go though here again until we reset the bit
'First make sure that the file exists and if it does read the first line.
If My.Computer.FileSystem.FileExists(LogFileName) Then
'Read all of the lines from the file. Each line will take one array element of line() array
Dim line() As String = IO.File.ReadAllLines(LogFileName)
'Get the first 9 characters of the first line which is held in line(0) as long as line(0) is greater than 9 chars long
If line(0).Length > 9 Then
Dim lineChars As String = line(0).Substring(0, 9)
Dim testchar As String = "Date-Time"
'Evaluate against the expected value.
'If the first 9 chars Of the first line In the file Is Not "Data-Time" Then we need To add the header In
If Not lineChars = testchar Then
'Read in log file
Dim LogFileReader As String
LogFileReader = My.Computer.FileSystem.ReadAllText(LogFileName)
'Read in Headerfile
Dim HeaderFileReader As String
HeaderFileReader = My.Computer.FileSystem.ReadAllText(HeaderFileName)
'Combine and write back to logfile
IO.File.WriteAllText(LogFileName, HeaderFileReader & vbNewLine & LogFileReader)
End If
End If
End If 'End If My.Computer.FileSystem.FileExists(LogFileName) Then
End If
'Reset the TestHeader bool.
If (hour > 22) And TestHeader Then
TestHeader = False
End If[/color]
'We want to copy the .log file to .csv. We will do this only once a day at 12:05.
'Since a new file is generated daily, we need to remember the previous days file name.
If (hour > 17) Then
YesterdayFile = LogFileName
End If
'At roughly 1:05AM copy yesterdays file to .csv file
If (hour > 0) And (hour < 2) And (mins >= 5) And Not MakeCsv Then
MakeCsv = True
CsvFile = YesterdayFile.Replace(".log", ".csv")
If System.IO.File.Exists(YesterdayFile) Then
My.Computer.FileSystem.CopyFile(YesterdayFile, CsvFile, overwrite:=True)
txtcsvfilename.Text = CsvFile
End If
End If
'reset the MakeCsv so that we will do the previous steps again tomorrow
If (hour > 3) And MakeCsv Then
MakeCsv = False
End If
'Email. At 12:10AM if the csv file exists, then we want to email it.
If System.IO.File.Exists(CsvFile) And (hour = 1) And (mins >= 10) And Not AutoEmailLock Then
AutoEmailLock = True
SendEmail = True
End If
If (hour > 2) And AutoEmailLock Then
AutoEmailLock = False
End If
End Sub
