MongoDB Learning Note Four C # call MongoDB

Driven

• Download
  Https://github.com/mongodb/mongo-csharp-driver/downloads

• Project Address:
  Https://github.com/mongodb/mongo-csharp-driver

• 1.10 Use reference:
  http://mongodb.github.io/mongo-csharp-driver/1.10/

• 1.10 API
  http://api.mongodb.org/csharp/1.10/

  The official recommendation is to install with NuGet. But I search out too many things, not clear, so direct download.
  It is important to note that 2.0 and 1.10 support different environments.

c#/.net Driver Version	MongoDB 2.4	MongoDB 2.6	MongoDB 3.0
Version 2.0	?	?	?
Version 1.10	?	?	?

Driver Version	. NET 3.5	. NET 4.0	. NET 4.5	Mono 2.10	Mono 3.x
Version 2.0			?		?
Version 1.10	?	?	?	?	?

I am here to download version 1.10, Framework 4.0 environment.

Use connection

Using Mongodb.bson;Using Mongodb.driver;var client =New Mongoclient ("mongodb://localhost:27017");var server = client. Getserver (); var database = server. Getdatabase ("foo");  var collection = database. Getcollection<bsondocument> ("Bar");  Await collection. Insertoneasync (new Bsondocument ("Name", "Jack"));  var list = await collection. Find (new Bsondocument ("Name", "Jack")). Tolistasync (); foreach (var document in list) {Console.WriteLine (document["Name"]);}     

Document is an entity class

Using Mongodb.bson;Using Mongodb.driver;PublicClass person{Public ObjectId Id {GetSet }PublicString Name {GetSet }}var client = New Mongoclient ("mongodb://localhost:27017");  var server = client. Getserver (); var database = server. Getdatabase ("foo");  var collection = database. Getcollection<person> ("Bar");  Await collection. Insertoneasync (new Person {Name = "Jack"});  var list = await collection. Find (x = X.name = = "Jack"). Tolistasync (); foreach (var in list) {Console.WriteLine (person). Name);}                

The entity class is used for the following code

public class Entity{    public ObjectId Id { get; set; } public string Name { get; set; }}

Insert

var entity = new Entity { Name = "Tom" };collection.Insert(entity);var id = entity.Id; // Insert will set the Id if necessary (as it was in this example)

Find

var query = Query<entity>. EQ (E= = E.id, Id);var entity = collection. FindOne (query);//var entity = collection. Findonebyidas<entity> (ID);/* Define a query: query stdid=1 document Findoneargs args = new Findoneargs {Query = Query.eq (" stdID ", 1), Span class= "hljs-regexp" >//query stdid field equals 1 of document. }; //query var std = collection. Findoneas<student> (args); *//* queries multiple imongoquery query = Query.gte ( "stdID", 2); var result=collection. Findas<student> (Query.gte (2)); foreach (var each in result) {Console.WriteLine (each.stdname);} */ 

Save

entity.Name = "Dick";collection.Save(entity);

Update

var query = Query<Entity>.EQ(e => e.Id, id);var update = Update<Entity>.Set(e => e.Name, "Harry"); // update modifierscollection.Update(query, update);

Delete

var query = Query<Entity>.EQ(e => e.Id, id);collection.Remove(query);

This is a complete example:

Using System;Using System.Collections.Generic;Using System.Linq;Using System.Text;Using Mongodb.bson;Using Mongodb.driver;Using Mongodb.driver.builders;namespace consoleapplication1{PublicClass Entity {Public ObjectId Id {GetSet }PublicString Name {GetSet }} Class Program {Staticvoid Main (String[] (args) {var connectionString ="Mongodb://localhost";var client =New Mongoclient (connectionString);var server = client. Getserver (); var database = server. Getdatabase ("test"); var collection = database. Getcollection<entity> ("entities"); var entity = New Entity {Name = "Tom"}; collection. Insert (entity); var id = entity. Id; var query = Query<entity>. EQ (E = e.id, Id); Entity = collection. FindOne (query); Entity. Name = "Dick"; collection. Save (entity); var update = Update<entity>. Set (E = e.name, "Harry"); collection. Update (query, update); Collection. Remove (query); } }}

Reference: http://mongodb.github.io/mongo-csharp-driver/1.10/getting_started/

LINQ Query

The C # driver 1.8 version began to support LINQ queries.

in collection.AsQueryable<SY.Model.User>()                       //where e.age> 22 select e;linquery=linquery.Where(c=>c.Name=="张三");int count=linquery.Count();

Reference: http://mongodb.github.io/mongo-csharp-driver/1.10/linq/

Document Query method

Not tested, the reference address is recorded here.

Document DocName = new Document {{"Field name 1", "Input value 1"}, {"Field Name 2", "Input value 2"};///<summary>Get user information by name///</summary>///<param name= "Muserinfo" > User model Class</param>///<returns> User-Generic collection</returns>Public list<userinfo>Getuserbyname (UserInfo muserinfo) {list<userinfo> Lsuser =New List<userinfo> ();using (Mongo Mongo =New Mongo ("Mongodb://localhost")) {mongodatabase mongodatabase = MONGO. Getdatabase ("UserInfo")As Mongodatabase; mongocollection<document> mongocollection = mongodatabase.getcollection<document> ("MyCollection")As mongocollection<document>; Mongo. Connect (); Document DocName =New Document {{ "FirstName",  "AAA"}, { "LastName", Span class= "hljs-string" > "BBB"}; mongodb.icursor<document> users = Mongocollection.find (DocName); foreach (Document user in users. Documents) {UserInfo Muser = new UserInfo (); muser.firstname = User[" FirstName "]. ToString (); Muser.lastname = User[ "LastName"]. ToString (); Muser.corporationname = User[ "Corporationname"]. ToString (); Muser.phone = User[ "Phone"]. ToString (); Muser.email = User[ "Email"]. ToString (); Muser.usertype = User[ "usertype"]. ToString (); Lsuser.add (Muser); }} return lsuser;}           

http://weishangxue.blog.163.com/blog/static/21575188201181633811102/
Http://mikaelkoskinen.net/post/mongodb-aggregation-framework-examples-in-c

MongoDB Learning Note Four C # call MongoDB