Webview pane displayed using commandbar button

public class ADXOlFolderWebViewProperties
{
    public static void Restore()
    {
        RegistryKey ModuleKey = null;
        RegistryKey WebViewKey = null;
        RegistryKey ADXXOLKey = null;
        try
        {
            string RegistryKey = AddinModule.CurrentInstance.RegistryKey;
            ModuleKey = Registry.CurrentUser.OpenSubKey(RegistryKey, true);
            if (ModuleKey != null)
            {
                ADXXOLKey = ModuleKey.OpenSubKey(ADXOlFolderWebViewProperties.ADXXOLKey, true);
                if (ADXXOLKey != null)
                {
                    WebViewKey = ADXXOLKey.OpenSubKey(ADXOlFolderWebViewProperties.WebViewKey, true);
                    if (WebViewKey != null)
                    {
                        string[] names = WebViewKey.GetValueNames();
                        for (int i = 0; i < names.Length; i++)
                        {
                            object FolderObj = null;
                            try
                            {
                                try
                                {
                                    string[] values = (string[])WebViewKey.GetValue(names[i]);
                                    if (values != null)
                                    {
                                        FolderObj = FolderFromEntryID(AddinModule.CurrentInstance.HostApplication, names[i]);
                                        if (FolderObj != null)
                                        {
                                            if (CompareStrings(values[0], ADXOlFolderWebViewProperties.EMPTYConst))
                                                values[0] = String.Empty;

                                            SetWebView(FolderObj, values[0], Convert.ToBoolean(values[1]));
                                        }
                                    }
                                }
                                catch
                                {
                                }
                            }
                            finally
                            {
                                if (FolderObj != null)
                                {
                                    Marshal.ReleaseComObject(FolderObj);
                                    FolderObj = null;
                                }
                                WebViewKey.DeleteValue(names[i]);
                            }
                        }
                    }
                }

                if (ModuleKey.OpenSubKey(ADXOlFolderWebViewProperties.ADXXOLKey) != null)
                {
                    //ModuleKey.DeleteSubKeyTree(ADXXOLKey);
                }
            }
        }
        finally
        {
            if (ModuleKey != null) ModuleKey.Close();
            if (WebViewKey != null) WebViewKey.Close();
            if (ADXXOLKey != null) ADXXOLKey.Close();
        }
    }

    private static string ADXXOLKey = "ADXXOL";
    private static string WebViewKey = "WebView";
    private static string EMPTYConst = "EMPTY";

    private static bool CompareStrings(string str1, string str2)
    {
        if (String.Compare(str1.Trim(), str2.Trim(), true, System.Globalization.CultureInfo.InvariantCulture) == 0)
            return true;
        return false;
    }

    private static object FolderFromEntryID(object OutlookAppObj, string EntryID)
    {
        try
        {
            if (OutlookAppObj != null)
            {
                object OutlookNameSpaceObj = OutlookAppObj.GetType().InvokeMember("GetNamespace", BindingFlags.GetProperty, null, OutlookAppObj, new object[] { "MAPI" });
                try
                {
                    if (OutlookNameSpaceObj != null)
                    {
                        return OutlookNameSpaceObj.GetType().InvokeMember("GetFolderFromID", BindingFlags.InvokeMethod, null, OutlookNameSpaceObj, new object[] { EntryID });
                    }
                    else
                    {
                        return null;
                    }
                }
                finally
                {
                    if (OutlookNameSpaceObj != null)
                    {
                        Marshal.ReleaseComObject(OutlookNameSpaceObj);
                        OutlookNameSpaceObj = null;
                    }
                }
            }
            else
            {
                return null;
            }
        }
        catch
        {
            return null;
        }
    }

    private static void SetWebView(object FolderObj, string WebViewURL, bool WebViewOn)
    {
        try
        {
            if (FolderObj != null)
            {
                FolderObj.GetType().InvokeMember("WebViewURL", BindingFlags.SetProperty, null, FolderObj, new object[] { WebViewURL });
                FolderObj.GetType().InvokeMember("WebViewOn", BindingFlags.SetProperty, null, FolderObj, new object[] { WebViewOn });
            }
        }
        catch
        {
            //"Insufficient permission"
        }
    }
}