FileStream example

[quwiltw]

anyone have a code snippet using the filestream class? the documentation says "In the following example,..." and there is no example following.

[Robby]

   Public Function SaveToFile(ByVal saveThis As String) As Boolean
       Try
           Dim sb As New FileStream(Application.StartupPath & "\test.txt", FileMode.OpenOrCreate)
           Dim sw As New StreamWriter(sb)

           sw.Write(saveThis)
           sw.Close()

           Return True
       Catch
           Return False
       End Try
   End Function

   Private Function OpenFile() As Boolean
       Dim sr As StreamReader
       sr = File.OpenText(Application.StartupPath & "\test.txt")

       Dim strItems As String
       'loop through the text file
       While sr.Peek <> -1
           strItems = sr.ReadLine()

           'using [b]strItems[/b] add eachline to something here 
       End While
       sr.Close()

       Return True 'file was there...with no errors
   End Function

[quwiltw]

Thanks Robby, I was hoping to see an example that used BeginRead/Write and EndRead/Write to reduce the need to load the entire file into memory in order to read it. For example, if you had a B+Tree and knew the size of every node and want to only load one specific subtree into memory and not the entire file.