mongodb c# tutorial

Label:extending the QueryBuilder of MongoDB C # driverBecause you do not want to directly hardcode the string "ClassA.MemberA.MemberB", write the following classes for the following common scenarios:1. Expression converted to String function: Exptostr ()2. Collection function: When you have a member of a collection, you can use this class to return the Querycollection object, which is appended with the code

Connection database: Reference address: https://blog.oz-code.com/how-to-mongodb-in-c-part-2/ //Empty ctor would get you a//client with a default localhost and port #27017Mongoclient m =Newmongoclient (); //---------------------------------------------------------------------- //Using a connection-stringMongoclient M1 =NewMongoclient ("mongodb://loca

Tags: IDE and compare LSE reverse order CSharp min MONGO iterObjective has not actually used MongoDB, recently a project used, stepped on some pits. This article describes the problems that are encountered when mapping Mongodb->runcommand results to business classes, and explores the various approaches. The data in the collection is this: Use the Find command to query the data: Db.runcommand ({"Find": "Tes

[Switch] The internal implementation of IMongoQuery in MongoDB C #/. NET Driver, MongoDB is a product between relational databases and non-relational databases. It has the most abundant functions and features like relational databases. The supported data structure is very loose and is similar to the json bjson format. Therefore, it can store complicated data type

1. Installing the MongoDb Driver package2. Use the wrapper class: public class Mongodbwrapper:idisposable {private Mongoserver _server; Private Mongodatabase _db; Public Mongodbwrapper () {var uri = configurationsettings.appsettings["Mongourl"]; var url = new Mongourl (URI); var client = new Mongoclient (URL); _server = client. Getserver (); _db = _server. Getdatabase (URL. DatabaseName); } pu

This version is different from the previous one. It has a dedicated github project. Https://github.com/mongodb/mongo-cxx-driver First, obtain the source code: git clone https://github.com/mongodb/mongo-cxx-driver.git Switch the branch: git checkout 26compat Then compile with the following command: scons --prefix=/usr --use-system-boost --sharedclient --full install-mongoclient This command will compile

Mongodatabase db = new MongoDb (). Getdatabase ();MongocollectionUpdate a field in a documentImongoquery query = Query.eq ("_id", New ObjectId (KeyValue));Bsondocument bsondocument = bsonextensionmethods.tobsondocument (entity);var update = new UpdateDocument {"$set", new Querydocument {{"number", Entity.number}}};Collection. Update (query, update);To update the entire document:Imongoquery Query1 = Query.eq ("_id", New ObjectId (KeyValue));bsondocumen

=0; i ) {Visitsanalythreads[i]=NewThread (myservice.start) {Name ="Access Analysis"+ (i +1) +"#" }; } foreach(varVaiteminchvisitsanalythreads) {Vaitem.start (); }This example of MONGDB is passed through the layer layer to eventually implement the normal operation of multithreading.In addition, MONGDB itself is a support lock, but the C # Mongodb.driver did not do things to support it.Available through database. Requeststart ();d

Create a collection to hold _idDb.createcollection ("counters")Add fields that require self-increment{ "_id": "ProductID", "Sequence_value": 0}Then add the self-increment JS method in the MongoDB library Getnextsequencevaluefunction (sequencename) { var sequencedocument = db.counters.findAndModify ( { query:{_id:sequencename}, Update: {$inc: {sequence_value:1}}, new:true }); return sequencedocument.sequence_valu

The use of the. NET driver is recommended by MongoDB website: http://mongodb.github.io/mongo-csharp-driver/2.4/getting_started/quick_tour/ The official example is that the database name set in the code has been used to set in the connection string, looked at the official document finally found in the way the string set method The original Way New mongoclient (connectionString); var db = client. Getdatabase (databaseName); var col = db. Getcollection(n

, adhere to the principle of diversification, choose a better and more economical way, rather than top-down unification. More commonly, we can directly use MongoDB to store key value pairs of data types, such as: Verification Code, session, etc. due to MongoDB's scale-out capability, it can also be used to store data that is very large in the future, such as: logs, comments, etc. Because MongoDB stores the

Summary: This article only provides a QuickStart level for using C # driver Operations MongoDB, a master skips Downloading the C # Driver Bash download To add a related DLL reference MongoDB.Bson.dll MongoDB.Driver.dll Add a namespace referenceusing Mongodb.bson; using Mongodb.driver; Get Client Objectvar "

:> D:> CD MongoDB >CD bin> Mongod--dbpath "D:\MongoDB\data" Then in the browser input: http://localhost:27017/, you can see the following prompt: You is trying to access MongoDB on the native driver port. For HTTP diagnostic access, add the port number (may not be the same as this, there are words on the line) Thus, the Mong