using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Runtime.Serialization; using System.Data; using System.Data.SqlClient; using MongoDB.Bson; using MongoDB.Driver; namespace ConsoleApplication1 { class Program { static void Main(string[] args) { //连接信息 string conn = "mongodb://localhost"; string database = "demoBase"; string collection = "demoCollection"; MongoServer mongodb = MongoServer.Create(conn);//连接数据库 MongoDatabase mongoDataBase = mongodb.GetDatabase(database);//选择数据库名 MongoCollection mongoCollection = mongoDataBase.GetCollection(collection);//选择集合,相当于表 mongodb.Connect(); //普通插入 var o = new { Uid = 123, Name = "xixiNormal", PassWord = "" }; mongoCollection.Insert(o); //对象插入 Person p = new Person { Uid = 124, Name = "xixiObject", PassWord = "" }; mongoCollection.Insert(p); //BsonDocument 插入 BsonDocument b = new BsonDocument(); b.Add("Uid", 125); b.Add("Name", "xixiBson"); b.Add("PassWord", ""); mongoCollection.Insert(b); Console.ReadLine(); } } class Person { public int Uid; public string Name; public string PassWord; } }
结果:
都是上述配置写的,程序会自动建立对应的库和集合。
下面的操作不上完整代码了:
/* * sql : SELECT * FROM table * */ MongoCursor<Person> p = mongoCollection.FindAllAs<Person>(); /* * sql : SELECT * FROM table WHERE Uid > 10 AND Uid < 20 * */ QueryDocument query = new QueryDocument(); BsonDocument b = new BsonDocument(); b.Add("$gt", 10); b.Add("$lt", 20); query.Add("Uid", b); MongoCursor<Person> m = mongoCollection.FindAs<Person>(query); /*-- * sql : SELECT COUNT(*) FROM table WHERE Uid > 10 AND Uid < 20 *-- */ long c = mongoCollection.Count(query); /*-- * sql : SELECT Name FROM table WHERE Uid > 10 AND Uid < 20 *-- */ QueryDocument query = new QueryDocument(); BsonDocument b = new BsonDocument(); b.Add("$gt", 10); b.Add("$lt", 20); query.Add("Uid", b); FieldsDocument f = new FieldsDocument(); f.Add("Name", 1); MongoCursor<Person> m = mongoCollection.FindAs<Person>(query).SetFields(f); /*-- * sql : SELECT * FROM table ORDER BY Uid DESC LIMIT 10,10 *-- */ QueryDocument query = new QueryDocument(); SortByDocument s = new SortByDocument(); s.Add("Uid", -1);//-1=DESC MongoCursor<Person> m = mongoCollection.FindAllAs<Person>().SetSortOrder(s).SetSkip(10).SetLimit(10);
官方驱动查询:
Query.All("name", "a", "b");//通过多个元素来匹配数组 Query.And(Query.EQ("name", "a"), Query.EQ("title", "t"));//同时满足多个条件 Query.EQ("name", "a");//等于 Query.Exists("type", true);//判断键值是否存在 Query.GT("value", 2);//大于> Query.GTE("value", 3);//大于等于>= Query.In("name", "a", "b");//包括指定的所有值,可以指定不同类型的条件和值 Query.LT("value", 9);//小于< Query.LTE("value", 8);//小于等于<= Query.Mod("value", 3, 1);//将查询值除以第一个给定值,若余数等于第二个给定值则返回该结果 Query.NE("name", "c");//不等于 Query.Nor(Array);//不包括数组中的值 Query.Not("name");//元素条件语句 Query.NotIn("name", "a", 2);//返回与数组中所有条件都不匹配的文档 Query.Or(Query.EQ("name", "a"), Query.EQ("title", "t"));//满足其中一个条件 Query.Size("name", 2);//给定键的长度 Query.Type("_id", BsonType.ObjectId );//给定键的类型 Query.Where(BsonJavaScript);//执行JavaScript Query.Matches("Title",str);//模糊查询 相当于sql中like -- str可包含正则表达式