How do I Delete Related entites in entity framework -

How do I Delete Related entites in entity framework -

i trying delete related entities main entity in ef6

groupagejob , groupageaddresses having fk relationship 1 groupagejob many groupageaddresses here code wrote

var gaddrs= groupagejob.groupageaddresses.where(i=>i.transportjobid==2); foreach (var gaddr in gaddrs) { // db.groupageaddresses.remove(gaddr); db.entry(gaddr).state = entitystate.deleted; } groupagejob.status = transportjobstatus.delivered.tostring(); db.entry(groupagejob).state = entitystate.modified; var effroes = db.savechanges();

i getting error , adding relationship entity in deleted state not allowed

entity-framework entity-framework-5