Visual Basic

Dim txt As IO.File
Dim tmp As System.IO.FileStream
tmp = txt.Create("C:\abc.txt")
tmp.Close()
tmp.Dispose()    ' Tells the FileStream object to release the underlying unmanaged file handle
If txt.Exists("C:\abc.txt") = True Then
fl = txt.AppendText("C:\abc.txt")
fl.Write("testing")
fl.Close()
fl.Dispose()        ' Same thing...
End If
 
The next four lines are unneccessary
'fl=nothing
'txt = Nothing
'GC.WaitForPendingFinalizers()
'GC.Collect()
 
System.IO.File.Delete("C:\abc.txt")

' Put this at the top of your code
Imports System.Io
 
' The first Dim is unneccessary...
' Dim txt As IO.File
 
' Condensed the next few lines...
Dim tmp As New StreamWriter("C:\abc.txt", FileMode.Create)
tmp.Close()
 
' The IF statement is unneccessary considering it will ALWAYS return true.
' Where is fl defined and how???
fl = File.AppendText("C:\abc.txt")
fl.WriteLine("testing")
fl.Close()
 
File.Delete("C:\abc.txt")