如何以编程方式使用bundle初始化RavenDb数据库？

我有这段代码，它工作得很好，除了我想确保过期包在数据库中，我不想手动创建这个数据库。启用过期包时初始化数据库的正确方法是什么

        _documentStore = new DocumentStore()
            {
                Url = SettingsManager.RavenDbUrl,
                DefaultDatabase = SettingsManager.RavenDbDatabaseName
            };
        _documentStore.Initialize();

---

我找不到医生，也找不到帮助，所以我拼凑了这个：

static class RavenDbExtensions
{
    /// <summary>
    /// Ensure a bundle is activated
    /// </summary>
    /// <param name="documentStore"></param>
    /// <param name="bundleName"></param>
    /// <param name="databaseName"></param>
    public static void ActivateBundle(this IDocumentStore documentStore, string bundleName, string databaseName)
    {
        using (var session = documentStore.OpenSession())
        {
            var databaseDocument = session.Load<DatabaseDocument>("Raven/Databases/" + databaseName);
            var settings = databaseDocument.Settings;
            var activeBundles = settings.ContainsKey(Constants.ActiveBundles) ? settings[Constants.ActiveBundles] : null;
            if (string.IsNullOrEmpty(activeBundles))
                settings[Constants.ActiveBundles] = bundleName;
            else if (!activeBundles.Split(new char[]{';'}).Contains(bundleName, StringComparer.OrdinalIgnoreCase))
                settings[Constants.ActiveBundles] = activeBundles + ";" + bundleName;
            session.SaveChanges();
        }
    }
}

---

我不得不使用（var session=documentStore.OpenSession（“”）但它可以工作！谢谢你，自从回答这个问题以来，一切都发生了。因为它不再工作了。我通过添加session.Advanced.GetMetadataFor（databaseDocument）[Constants.AllowBundlesChange]=true，使其正常工作；当然，正如@ms007所提到的，documentStore.OpenSession（Constants.SystemDatabase）也是必要的

        _documentStore = new DocumentStore()
            {
                Url = SettingsManager.RavenDbUrl
            };
        _documentStore.Initialize();
        _documentStore.ActivateBundle("Expiration", Assembly.GetExecutingAssembly().GetName().Name);
        _documentStore.ActivateBundle("DocumentExpiration", Assembly.GetExecutingAssembly().GetName().Name);
        _documentStore.DefaultDatabase = Assembly.GetExecutingAssembly().GetName().Name;