In ASP.NET I've found you cannot store a class in a session or viewstate
variable without first marking it as Serializable.
Example:
<Serializable() >_
Public Class Foo
End Class
In a Windows Form if you mark a class Serializable you can save/load it to
disk with code like this:
' class to persist to disk...
<Serializable() > _
Public Class UserSettings
Private _username As String
Public Property UserName() As String
Get
Return _username.ToLow er
End Get
Set(ByVal Value As String)
_username = Value.ToLower
End Set
End Property
End Class
' helper class to save/load form disk...
Imports System
Imports System.IO
Imports System.Runtime. Serialization.F ormatters.Binar y
Public Class UserSettingsDB
Private Sub New()
End Sub
Public Shared Function LoadSettings() As UserSettings
Dim mySettings As New UserSettings
Dim s As String = "c:\myapp.b in"
If File.Exists(s) Then
Dim streamOut As FileStream
Try
Dim formatter As New BinaryFormatter
streamOut = New FileStream(s, FileMode.Open,
FileAccess.Read )
mySettings = CType(formatter .Deserialize(st reamOut),
UserSettings)
Catch
Finally
streamOut.Close ()
End Try
End If
Return mySettings
End Function
Public Shared Sub SaveSettings(By Val mySettings As UserSettings)
Dim s As String = "c:\myapp.b in"
Dim formatter As New BinaryFormatter
Dim streamIn As New FileStream(s, FileMode.Create ,
FileAccess.Writ e)
formatter.Seria lize(streamIn, mySettings)
streamIn.Close( )
End Sub
End Class
Greg
"john m" <jm@haengineers .com> wrote in message
news:eK******** ******@TK2MSFTN GP12.phx.gbl...
i think it means you can use the serializer to persist the data
to an xml file
not sure how to do that or even how to get the samples to work
"John" <jo**@nospam.in fovis.co.uk> wrote in message
news:OB******** *****@tk2msftng p13.phx.gbl... Hi
What is a Serializable class compared to a normal class?
Thanks
Regards
