C # Implementation of MongoDB's simple additions and deletions to search and change

First add the required driver package (available through NuGet)

Using Mongodb.bson;
Using Mongodb.driver;
Using MongoDB.Driver.Builders;

First, set the configuration information

  //Connection Information        Static stringconn ="Mongodb://localhost"; Static stringDatabase ="Test"; Static stringCollection =" Person"; StaticMongoserver MongoDB = mongoserver.create (conn);//connecting to a database        StaticMongodatabase db = MongoDB. Getdatabase (database);//Select a database name        Staticmongocollection MC = db. GetCollection (collection);//Select Collection, equivalent to table

Second, insert the database

 Public Static void Insert (person p) {MC. Insert (P);}  Public Static void Insert (bsondocument b)  {MC. Insert (b);}

Third, update the database

    Public Static void Update (person p)        {            = bsonextensionmethods.tobsondocument (p);             = Query.eq ("_id", p._id);             New UpdateDocument (BD));        }          Public Static void Update (querydocument q,updatedocument u)        {            MC. Update (q, u);        }

Iv. Deleting a record

 Public Static void Delete (int  ID) {     mc. Remove (Query.eq ("_id", id));}

V. Querying the database

         Public StaticPerson Find (intID) {returnMc. Findoneas<person> (Query.eq ("_id", id)); }         Public StaticMongocursor<person>FindAll () {returnMc. Findallas<person>(); }         Public StaticMongocursor<person>Select (querydocument q) {returnMc. Findas<person>(q); }

VI. Number of statistical data

 Public Static Long Count (querydocument q)  {       return  MC. Count (q); }

Vii. Sorting and paging

    Public Static Mongocursor<person> skipandlimit (intint  b)        {            return Mc. Findallas<person>(). Setskip (a). Setlimit (b);        }

Viii. Applications and examples

   Static voidMain (string[] args) {MongoDB.            Connect (); //var person = Find (124); //Console.WriteLine (person.            Name); //Person .            Name = "Guizhu"; //Update (person); //Console.WriteLine (person. Name);            varquery =Newquerydocument {{"_id", -} }; varUpdate =Newupdatedocument {{"$set",Newquerydocument {{"PassWord","AAAAA" } } } };            Update (query,update); //Object Insertion//Person p = new Person {_id = n, Name = "Hello", PassWord = "4444"}; //Insert (P); //bsondocument Insertion//bsondocument B = new Bsondocument (); //B.add ("_id", 13); //B.add ("Name", "World"); //B.add ("PassWord", "6666"); //Insert (b); //var p= FindAll (); //foreach (var person in P)//{            //Console.WriteLine (person.            Name); //}            //querydocument query = new querydocument (); //bsondocument B = new Bsondocument (); //B.add ("$gte", 123); //B.add ("$lt", 125); //query.            ADD ("_id", b); //var p=select (query); //foreach (var person in P)//{            //Console.WriteLine (person.            Name); //}            //Console.WriteLine (Count (query)); //fieldsdocument f = new fieldsdocument (); //F.add ("Name", 1); //mongocursor<person> m = mc. Findas<person> (query).            Setfields (f); //foreach (var person in P)//{            //Console.WriteLine (person.            Name); //}            //sortbydocument s = new sortbydocument (); //S.add ("_id", 1);//-1=desc//var p = Sort (s); //foreach (var person in P)//{            //Console.WriteLine (person.            Name); //}            //var p = skipandlimit (1, 3); //foreach (var person in P)//{            //Console.WriteLine (person.            Name); //}                        //Delete (n);Console.WriteLine ("Complete");        Console.ReadLine (); }

  class person    {        publicint  _id;          Public string Name;          Public string PassWord;    }

C # Implementation of MongoDB's simple additions and deletions to search and change