public string SetStudentToTeacher(int IdSchool, int IdTeacher, int IdStudent)
{
if (!_dal.IsExist(IdStudent))
{
return("This Student Is Not Exist ");
}
if (!_dalschool.IsExist(IdSchool))
{
return("This School Is Not Exist ");
}
if (!_dalteacher.IsExist(IdTeacher))
{
return("This Teacher Is Not Exist ");
}
var Student = _dal.GetStudent(IdStudent);
var Teacher = _dalteacher.GetTeaher(IdTeacher);
ClassSchool Class = new ClassSchool()
{
Student = Student,
Teacher = Teacher
};
_dal.SetStudntToTeacher(Class, IdSchool);
return("true");
}