c# mongodb driver

MongoDB steps: 1. Google search MongoDB find the official website to download: http://www.mongodb.org/ 2. Decompression: Tar zvxf mongodb-linux-i686-2.4.3.tgz generate a mongodb-linux-i686-2.4.3 folder 3. Enter the Mongodb-linux-i686-2.4.3/bin folder, which binaries can b

MongoDB C # Driver is an officially available. NET C # driver. Getting Started with the C # Driver C #

The first thing to look at is GitHub's C + + driver projectHttps://github.com/mongodb/mongo-cxx-driverHere is a brief introduction, the current C + + driver is divided into three versions, placed in different branch Branch Stability Development

Tags: style blog http color os filePreviously used Nodejs to connect the operation MongoDB, but recently need to use C # to operate MongoDB needs, so the next C # driver research. MongoDB officially provides

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 reference

Label:When using MongoDB, it is sometimes necessary to add an identical record to the DB, at which point if theUpdateWill not work, because Addtoset will determine whether the inserted record already exists.Therefore, you need to use:UpdateSpecific discussions can be found in:Http://stackoverflow.com/questions/27248556/mongodb-difference-between-push-addtosetOfficial documents:https://docs.mongodb.org/manua

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

. Ascending ("X"). Descending ("Y");UpdatesUpdatedefinitionInvocationupdatedefinitionOrupdatedefinitionBoth of these would render the update {$set: {x:1}}.Update Definition BuilderSee the tests for examples.The updatedefinitionbuilderFor example, to-build the update {$set: {x:1, Y:3}, $inc: {z:1}}, do the following:var builder = Buildersvar update = Builder. Set ("x", 1). Set ("Y", 3). INC ("Z", 1);Given the following class:Class Widget{[Bsonelement ("X")]public int X {get; set;}[Bsonelement ("Y

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 for t

than or equal to Query.mod ("value",3,1);//divides the query value by the first given value and returns the result if the remainder equals the second given valueQuery.ne ("name","C");//Not equal toQuery.nor (Array);//do not include values in the arrayQuery.not ("name");//element Condition StatementQuery.notin ("name","a",2);//returns a document that does not match all the conditions in the arrayQuery.or (Query.eq ("name","a"), Query.eq ("title","T"))

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

[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.

Tags: des http io os ar for div sp ArtBefore openingMongoc_init ()Synopsisvoidmongoc_init (void); DescriptionThis function should is called at the beginning of the every program using the MongoDB C driver. It is responsible for initializing global state such as process counters, SSL, and threading primatives.When your process have completed, you should also call

1,yum dependenciesCentos,rhel Fedora:$ sudo yum install git gcc automake autoconf libtoolDebian:$ sudo apt-get install git gcc automake autoconf libtoolFreebsd:$ Su-c ' pkg install git gcc automake autoconf libtool '2,fetch Sources and Buildgit clone https://github.com/mongodb/mongo-c-driver.gitcd mongo-c-

This version still does not solve the problem that dynamic libraries cannot be compiled. What are the nerves of MongoDB? It turns out that the two bypass methods will not work either. Only static databases are used. Download and compile the latest code. Scons -- prefix =/usr install An error is reported when the old C ++ code is compiled, because the ScopedDbConnection constructor is private and must be cre

******************************************************************* Less than querydocument queryD1 = new Querydocument ("Age", New Querydocument ("$lt", +));// foreach (Var in c Ollection. Find (queryD1)) { Console.WriteLine (person); } equals Xq20 querydocument queryD2 = new Querydocument ("Name", "test20");// foreach (Var in collection. Find (queryD2)) { Console.WriteLine (person); } equals Xq20 var query1 = Query.and (Query.eq ("Name", "test20"))

Query.all ("name", "a", "B"), or//through multiple elements to match the array Query.and (Query.eq ("name", "a"), Query.eq ("title", "T"));//satisfy multiple conditions at the same time query.eq ("name", "a");//equals Query.exists ("type", true);//Determines whether the key value exists query.gt ("value", 2);//greater Than > Query.gte ("value", 3);//greater than or equal to >= query.in ("name", "a", "B");//Includes all values specified, you can specify different types of conditions and val

Label:First, the query method that returns the specified field in MongoDB is as follows: Db.person.find ({Name: "Clown"},{age:1,sex:1}) This statement indicates that all data in the person table named Clown is queried, but only the age column and the sex column are returned. (The _id column is returned by default, set to 0 to not return) To manipulate MongoDB in C