How do know the csv created from SQLite is closed so I can read from it? - vb.net

Question

In vb.net, I have my program run sqlite3.exe. Sqlite3 runs the following commands, which are stored in a text file:
.open prod.db
.mode csv
.output output.csv
SELECT STATEMENT
.output stdout
.exit
Once output.csv has been created, I then run a Streamreader to see what the results were and I get the following error:
The process cannot access the file 'output.csv' because it is being used by another process.
However, I know it is not locked up for long because I can go to the csv and open it manually after it is created.
I would write code to check to see when the process finishes, but I'm not sure what process is running to check this (I already check for SQLite3.exe to close). In other words, how do I know my csv is free for Streamreader to open?

Answer 1

Using droque's link"
VB.Net 3.5 Check if file is in use
I was able to combine this with some of my own code to fix the problem:
While FileInUse("output.csv") And j < 100
System.Threading.Thread.Sleep(100)
j += 1
End While
'Timeout after ~10 seconds
If j = 100 Then
MessageBox.Show("CSV timeout. Exiting now.")
Exit Sub
End If
where FileInUse is defined here:
Public Function FileInUse(ByVal sFile As String) As Boolean
Dim thisFileInUse As Boolean = False
If System.IO.File.Exists(sFile) Then
Try
Using f As New IO.FileStream(sFile, FileMode.Open, FileAccess.ReadWrite, FileShare.None)
' thisFileInUse = False
End Using
Catch
thisFileInUse = True
End Try
End If
Return thisFileInUse
End Function