22. C# 驱动操作 ( 对照命令行 )
g. 索引
添加索引:
var headLineInfos = new
MongoHelper().GetCollection<HeadLineInfo>();
headLineInfos.EnsureIndex(IndexKeys.Descending("NewsId"));
headLineInfos.EnsureIndex(IndexKeys.Descending(“ChannelType”,
“SubmitTime”));( 支持复合索引 )
移除索引:
headLineInfos.DropIndex(IndexKeys.Descending("IsVertical"));
h. findOne 用法
var query = Query.EQ("_id", MongoDB.Bson.BsonString.Create(KeyId));
var info = newsinfos.FindOne(query);