CODEWITHSUNDEEP
windows-phone-7savesettings
Ahmed.C
Ahmed.C

Reputation: 487

WP7 - Adding Settings page. Reading values from a different page?

So I've created a page called "Settings". Obviously in this page is where the settings are for the app. In the Settings page I've added 2 ToggleSwitches and 1 Listpicker. Using the Nokia Developer website on basics of Saving and reading Settings i managed to pull it off so it saves the states of the toggleswitches and listpicker.

The problem i'm having right now is that i need a way to read these saved setting values on the first page when the app starts so it can prepare the app accordingly. Soo far this is what i have in the Settings page:

Imports System.IO.IsolatedStorage
Partial Public Class Settings
Inherits PhoneApplicationPage
Private AppSettings As IsolatedStorageSettings
Public Sub New()
    InitializeComponent()
    AppSettings = IsolatedStorageSettings.ApplicationSettings
    ListPicker1.Items.Add("Saved Notes")
    ListPicker1.Items.Add("Important")
End Sub
Protected Overrides Sub OnNavigatedTo(e As NavigationEventArgs)
    Try
        Tg1.IsChecked = CBool(AppSettings("UseAccentColor"))
        Tg2.IsChecked = CBool(AppSettings("GoBack"))
        ListPicker1.SelectedIndex = CByte(AppSettings("StartListFalse"))
    Catch ex As KeyNotFoundException
        AppSettings.Add("UseAccentColor", False)
        AppSettings.Add("GoBack", False)
        AppSettings.Add("StartListFalse", False)
        AppSettings.Save()
    End Try
End Sub
Protected Overrides Sub OnNavigatedFrom(e As NavigationEventArgs)
    System.Diagnostics.Debug.WriteLine("Exiting, so save now")
    AppSettings("UseAccentColor") = Tg1.IsChecked
    AppSettings("GoBack") = Tg2.IsChecked
    AppSettings("StartListFalse") = ListPicker1.SelectedIndex
    AppSettings.Save()
End Sub
End Class

So soo far it saves on exit but i need a way to load these from startup i.e. my MainPage. Like a way to refer to this page and according to these settings change whatever needs to be changed.

How can i do this? Thanks!

Upvotes: 0

Views: 70

Answers (1)

har07
har07

Reputation: 89285

You managed to save Settings to IsolatedStorage, and IsolatedStorage is accesssible from any page of your application. So in MainPage, just read those setting from IsolatedStorage instead of the Settings Page.

EDIT : You can do it just like in OnNavigatedTo method in Settings Page

Private AppSettings As IsolatedStorageSettings = IsolatedStorageSettings.ApplicationSettings
'Tg1.IsChecked is analog with useAccentColor
Dim useAccentColor As Boolean = CBool(AppSettings("UseAccentColor"))
'Tg2.IsChecked = goBack
Dim goBack As Boolean = CBool(AppSettings("GoBack"))
'ListPicker1.SelectedIndex = startListFalse
Dim startListFalse As Byte = CByte(AppSettings("StartListFalse"))

Upvotes: 1

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