IsolatedStorageSettings for WPF

System.IO.IsolatedStorageSettings doesn’t exist in WPF (only in Silverlight) but can easily be ported from Mono project’s Moonlight implementation (the Moonlight project home is at http://www.mono-project.com/Moonlight), as suggested at: http://groups.google.com/group/wpf-disciples/browse_thread/thread/4ed6c009f3fb7d69

I found that implementation at the following URL:

http://vega.frugalware.org/tmpgit/moon/class/System.Windows/System.IO.IsolatedStorage/IsolatedStorageSettings.cs

Did some modifications to IsolatedStorageSettings.cs to make it work with WPF (whether the application is deployed via ClickOnce or not):

    // per application, per-computer, per-user
    public static IsolatedStorageSettings ApplicationSettings {
      get {
        if (application_settings == null) {
          application_settings = new IsolatedStorageSettings (
            (System.Threading.Thread.GetDomain().ActivationContext!=null)?
              IsolatedStorageFile.GetUserStoreForApplication() : 
//for WPF, apps deployed via ClickOnce will have a non-null ActivationContext
              IsolatedStorageFile.GetUserStoreForAssembly());
        }
        return application_settings;
      }
    }

    // per domain, per-computer, per-user
    public static IsolatedStorageSettings SiteSettings {
      get {
        if (site_settings == null) {
          site_settings = new IsolatedStorageSettings (
            (System.Threading.Thread.GetDomain().ActivationContext!=null)?
              IsolatedStorageFile.GetUserStoreForApplication() :
  //for WPF, apps deployed via ClickOnce will have a non-null ActivationContext
              IsolatedStorageFile.GetUserStoreForAssembly());
        //IsolatedStorageFile.GetUserStoreForSite() works only for Silverlight
        }
        return site_settings;
      }
    }

 

Note that you should also change the #if block at the top of that code to write

#if !SILVERLIGHT

Also can take a look at the following for custom settings storage:

http://f10andf11.blogspot.gr/2012/03/wpf-implement-isolatedstoragesettings.html

The resulting IsolatedStorageSettings.cs file for WPF (thanks to if !SILVERLIGHT block, the C# compiler will ignore it in Silverlight which has such class already) is included in the WPF_Compatibility layer at the ClipFlair source-code in http://clipflair.codeplex.com (checkout the “Client” subfolder in the source).

The WPF compatibility layer contains other goodies too like value coercion for Silverlight DependencyProperties using WPF-compatible syntax, so that your source code can stay source-level compatible with both WPF and Silverlight and be shared among respective projects.