To Flush or Not to Flush

[Tom]

Do I really need to flush a streamwriter? It appears to work either way.

Dim sw As StreamWriter
Dim strFullPath As String = "C:\Temp\Test.txt"

If File.Exists(strFullPath) Then
sw = File.AppendText(strFullPath)
Else
sw = File.CreateText(strFullPath)
End If

sw.WriteLine("Hello its me")

'sw.Flush()
sw.Close()

Tom

 

[David Browne]

Do I really need to flush a streamwriter? It appears to work either way.

Dim sw As StreamWriter
Dim strFullPath As String = "C:\Temp\Test.txt"

If File.Exists(strFullPath) Then
sw = File.AppendText(strFullPath)
Else
sw = File.CreateText(strFullPath)
End If

sw.WriteLine("Hello its me")

'sw.Flush()
sw.Close()

Close always Flush'es first.

You would only need to flush if you were keeping the StreamWriter open and
wanted to make sure that all of your previous writes were safely on-disk.

David