partial void DeleteEmployeeactivity(Employeeactivity instance);
 partial void UpdateEmployeeactivity(Employeeactivity instance);
 private void detach_Employeeactivities(Employeeactivity entity)
 {
     this.SendPropertyChanging("Employeeactivities");
     entity.Employeeactivity1 = null;
 }
 partial void InsertEmployeeactivity(Employeeactivity instance);
 private void attach_Employeeactivities(Employeeactivity entity)
 {
     this.SendPropertyChanging("Employeeactivities");
     entity.Employee = this;
 }