public static async Task AddTeacherAsync(int Id, string Name, string PhoneNum, int SchoolID, string DeviceSerial, string image)
 {
     using (TeacherService teacher = new TeacherService()) {
         await teacher.CreatAsync(new Models.Teacher()
         {
             Id = Id, Name = Name, PhoneNum = PhoneNum, SchoolId = SchoolID, DeviceSerial = DeviceSerial, Image = image
         }, true);
     }
 }