C # Update MongoDB sub-document implementation method

Reference resources:

1:mongodb3.2 System Learning--3, update () operation

2:c# manipulating MongoDB Sub-documents

The code is as follows:

 varMongostring ="mongodb://xxxxxxxxxxx:27017"; varHost =NewTmongodbhostmodel {CollectionName="ft_test", ConnectionString=mongostring, DatabaseName="system_db"             }; varperson =NewPerson {Id=Objectid.generatenewid (), Name="jamesbing", Address=NewList<addressitem>                 {                     NewAddressitem {Add ="United Kingdom", Id = Objectid.generatenewid (), age = A},                     NewAddressitem {Add ="United States", Id = Objectid.generatenewid (), age = +}                 }             }; varCollection = Tmongodbhelper.getmongocollection<person>(host. ConnectionString, host. DatabaseName, host.              CollectionName); //Update childdocument             varAddress ="address.$. {0}"; varresult =collection. Findandmodify (Query.and (NewList<imongoquery>{Query.eq ("_id",NewObjectId ("577b344a87aebb23c0fc767a")), Query.eq ("address._id",NewObjectId ("577b344a87aebb23c0fc767b"), }), MongoDB.Driver.Builders.Update.Set (string. Format (Address," Age"), Bsonvalue.create ( -)));

C # Update MongoDB sub-document implementation method