MongoDB: Editing Element In Array -

i wanting edit element might exist in multiple arrays in collection.

public class class  {     [bsonid]     public guid id { get; set;}     public string name {get; set;}     public list<student> students {get; set;} }  public class student  {    [bsonid]    public guid id {get; set;}    public string name {get; set;}    public string grade {get; set;} } 

then class collection like

{  "_id" : nuuid("..."),   "name" : "computer science",   "students" : [        {           "_id" : nuuid("..."),            "name" : "chris"            "grade" : "a"        },        {           "_id" : nuuid("..."),            "name" : "bob"            "grade" : "b"        } } 

and student collection like

{   "_id" : nuuid("..."),   "name" : "chris eastwood"   "grade": "c } 

now when student updates information want information updated in each class.

i trying do:

// given student has been edited  var query = query.eq("students._id", student.id); var update = update<class>     .pull(c => c.students, x => x.eq(q => q.id, student.id))     .push(c => c.students, student)  context.class.update(query,update,updateflags.multi); 

but not work since "cannot update students , students @ same time"

i wondering there way update student in each array each class contains student?

thanks!

i'm not familiar c# driver, query looking for:

db.classes.update({   'students._id': some_student_id, }, {   $set: {     'students.$.property': some_value   } },{   multi: true }); 

the key concept looking positional $ operator. index of object matched in query.