C#连接mongoDB以及增删改查(根据时间区间查询数据)

一、下载驱动

MongoDB.Driver;MongoDB.Bson;两个驱动

二、连接数据库

string conn = "mongodb://localhost";
string database = "personName";
string collection = "Student";
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();

三、新建实体类

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using MongoDB.Bson;
namespace CodeFactory.mongo
{
    class PersonEntity
    {
        public ObjectId _id { get; set; }
        public string name { get; set; }
        public int age { get; set; }  
    }
}

四、插入数据

PersonEntity he = new PersonEntity();
he.name = "Jack";
he.age = 19;
mongoCollection.Insert(he);

五、条件查询

string msg = string.Empty;
// 单条件查询全部数据
MongoCursor mc = mongoCollection.FindAllAs();
foreach (PersonEntity person in mc)
{
   msg += "_id:" + person._id.ToString() + " name:" + person.name.ToString() + " age:" + person.age.ToString() + "\n";
}

//单条件查找返回一条数据
var msg1 = "";
QueryDocument query1 = new QueryDocument("name", "linda");
PersonEntity mc1 = mongoCollection.FindOneAs(query1);
msg1 = mc1.name + "&" + mc1.age;

var msg2 = "";
// 多条件查询
QueryDocument query2 = new QueryDocument
{
    {"name", "Nancy"},
    {"age", 30}
}; 
mc = mongoCollection.FindAs(query2);
foreach (PersonEntity person in mc)
{
    msg2 += "_id:" + person._id.ToString() + " name:" + person.name.ToString() + " age:" + person.age.ToString() + "\n";
}

六、根据条件更新数据

// 根据条件更新一个值
var update = new UpdateDocument {
    { "$set", new BsonDocument("age", 30) }
};
mongoCollection.Update(query2, update);//query为五中的查询条件

// 根据条件更新多个值
var update1 = new UpdateDocument {
     { "$set", new BsonDocument{
           {"name", "jack7"},
           {"age", 31}
      } }
};
mongoCollection.Update(query2, update1);

七、根据时间区间查询数据

// 条件查询数据
QueryDocument query = new QueryDocument();
BsonDocument b = new BsonDocument();
b.Add("$gt", Convert.ToDateTime(startTime.ToString()).ToString("u"));
b.Add("$lt", Convert.ToDateTime(endTime.ToString()).ToString("u"));
query.Add("times", b);
MongoCursor mc = mongoCollection.FindAs(query);
int i = 0;
foreach (HisData data in mc)
   {
        //data
   }