Assign values to people picker control in SharePoint visual webpart

Below is the code snippet to read users from User and group field and assigning the same to the people picker control in form


                SPFieldUserValueCollection trainerColl = new SPFieldUserValueCollection(web, Convert.ToString(ItemColl[0]["User"]));

                List<PickerEntity> trainersEntity = new List<PickerEntity>();

                foreach (SPFieldUserValue spuserval in trainerColl)
                {

                    SPUser userToassign = spuserval.User;

                    PickerEntity entity = new PickerEntity();

                    PeopleEditor pe = new PeopleEditor();

                    entity.EntityData["Account Name"] = spuserval.User.LoginName;
                    entity.EntityData["SPUserId"] = spuserval.User.ID;
                    entity.EntityDa"Email"] = spuserval.User.Email;
                    entity.Key = spuserval.User.LoginName;
                    entity.Description = spuserval.User.LoginName;
                    entity.DisplayText = spuserval.User.Name;

                    entity = pe.ValidateEntity(entity);
                    entity.IsResolved = true;

                    peoplepickerControlId.Entities.Add(entity);
                }