我想从此查询中获取行数:
itemsCount = _contentManager.Query("TranslationBureau")
.List()
.Where(x => !x.As<IProfilePart>().IsReEdit)
.Where(x => x.As<CommonPart>()
.With(m => m.Owner)
.With(m => m.As<IUserRoles>())
.With(m => m.Roles)
.With(m => m.Contains(LingvoRole.TranslationBureau.ToString())))
.Count();`
如何在不提取所有项目的情况下获取行数?