IEnumerable过滤器

Question

如何添加过滤器以便我只返回RelationshipTypeIDs 26-30？

public IEnumerable<SelectListOptions> GetRelationshipTypes()
{
    return (from q in unitOfWork.GenericRepository<tlkpRelationshipType>().Get()
            select new SelectListOptions
            {
                Value = q.RelationshipTypeID.ToString(),
                Label = q.RelationshipType
            }
            ).ToList();
}

Answer 1

使用where子句，如下所示：

public IEnumerable<SelectListOptions> GetRelationshipTypes()
{
    return (from q in unitOfWork.GenericRepository<tlkpRelationshipType>().Get()
            where q.RelationshipTypeID >= 26 && q.RelationshipTypeID <= 30
            select new SelectListOptions
            {
                Value = q.RelationshipTypeID.ToString(),
                Label = q.RelationshipType
            }
            ).ToList();
}

Answer 2

return (from q in unitOfWork.GenericRepository<tlkpRelationshipType>().Get()
        where q.RelationshipTypeID >= 26
        where q.RelationshipTypeID <= 30
        select new SelectListOptions