/// <summary>
        /// Unlocks the webdav resource.
        /// </summary>
        /// <param name="resource">The resource.</param>
        public static void UnlockResource(int webDavElementPropertyId)
        {
            WebDavAbstractFactory             factory     = new WebDavAbstractFactory();
            WebDavStorageElementPropertiesRow propertyRow = null;

            try
            {
                propertyRow = new WebDavStorageElementPropertiesRow(webDavElementPropertyId);
            }
            catch
            {
                return;
            }
            ResourceInfo resInfo = GetResourceInfoFromPropertyRow(propertyRow);

            if (resInfo != null)
            {
                WebDavTicket ticket = WebDavTicket.Parse(resInfo.AbsolutePath);
                WebDavElementStorageProvider storageProvider =
                    factory.Create <WebDavElementStorageProvider>(ticket.AbsolutePath.StorageType);

                foreach (ActiveLockElement activeLockEl in storageProvider.GetActiveLocks(resInfo))
                {
                    OpaqueLockToken lockToken = OpaqueLockToken.Parse(activeLockEl.LockToken.InnerText);
                    storageProvider.Unlock(resInfo, lockToken);
                }
            }
        }
        /// <summary>
        /// Gets the active locked webdav resources.
        /// </summary>
        /// <returns></returns>
        public static IEnumerable <WebDavLockInfo> GetActiveLocksInfo()
        {
            WebDavAbstractFactory factory = new WebDavAbstractFactory();

            foreach (WebDavStorageElementPropertiesRow row in WebDavStorageElementPropertiesRow.List())
            {
                WebDavElementStorageProvider provider = factory.Create <WebDavElementStorageProvider>(row.ObjectTypeId);
                ResourceInfo resInfo = GetResourceInfoFromPropertyRow(row);
                if (resInfo != null)
                {
                    foreach (ActiveLockElement activeLockEl in provider.GetActiveLocks(resInfo))
                    {
                        OpaqueLockToken lockToken = OpaqueLockToken.Parse(activeLockEl.LockToken.InnerText);
                        McLockElement   mcLockEl  = GetMcLockElement(lockToken, provider.GetProperties(resInfo));

                        WebDavLockInfo retval = new WebDavLockInfo();
                        retval.WebDavElementPropertyId = row.PrimaryKeyId.Value;
                        retval.FileName      = resInfo.Name;
                        retval.ContentTypeId = ContentTypeResolver.GetContentTypeId(resInfo.ContentType);
                        retval.StartLocking  = new DateTime(mcLockEl.CreationDate * TimeSpan.TicksPerSecond);
                        retval.Duration      = DateTime.UtcNow - retval.StartLocking;
                        UserLight user = UserLight.Load(activeLockEl.Owner);
                        if (user != null)
                        {
                            retval.LockedBy = user.DisplayName;
                        }
                        else
                        {
                            retval.LockedBy = "Unknow";
                        }

                        yield return(retval);
                    }
                }
            }
        }