I have worked with asp.net for about two month and have not worked with class yet.
I have a form with 10 usercontrols who contains dropdownlists, checkboxes, textboxes and more. My client have to make a dynamic requestform to send out to his members.
This part is working fine.
After the form is sent, I want to save the viewstate in a file, so that the client can access it anytime edit it.
I found the code for saving and loading the viewstate. It is in a class.
Now I don't know how to call the class in the page_load() so that the viewstate is saved and loaded.
This is the class :
public class PersistViewStateToFileSystem : inherits Page
public ViewStateFilePath = server.MapPath("/album/myViewstate.txt")
Protected Overloads Overrides Sub SavePageStateToPersistenceMedium(ByVal viewState As Object)
' serialize the view state into a base-64 encoded string
Dim los as LosFormatter= new LosFormatter()
Dim writer as StringWriter= new StringWriter()
los.Serialize(writer, viewState)
' save the string to disk
Dim sw as new StreamWriter(ViewStateFilePath, false)
sw.Write(writer.ToString())
sw.Close()
end sub
Protected Overloads Overrides Function LoadPageStateFromPersistenceMedium() As Object
' determine the file to access
if NOT File.Exists(ViewStateFilePath)
return nothing
else
' open the file
Dim sr as StreamReader= File.OpenText(ViewStateFilePath)
Dim viewStateString as string = sr.ReadToEnd()
sr.Close()
' deserialize the string
Dim los as LosFormatter = new LosFormatter()
return los.Deserialize(viewStateString)
end if
end Function
end class
The code is in my aspx page.
Unsolved 
