.net - Multiple instances of IEntityChangeTracker error get when try to insert data into database in c# -

multiple instances of ientitychangetracker error when

try insert data database in c#.

i try search solution debuge code can't anythink it.now me resolve this.

    public void insertdatarootmasterdetails(tblrootmasterdetail objstud1)     {          dblaxmitatkalentities2 objentity1 = new dblaxmitatkalentities2();                   objentity1.tblrootmasterdetails.addobject(objstud1);          objentity1.savechanges();     } 

you can use addobject function adding newly created items. seems objstud1 selected ef context. in case should use attach function instead.

objentity1.tblrootmasterdetails.attach(objstud1); objentity1.entry(objstud1).state = system.data.entity.entitystate.modified; objentity1.savechanges();