async Task DeleteCourse()
{
var answer = await Application.Current.MainPage.DisplayAlert("Confirm", "Delete confirm", "Yes", "No");
if (!answer)
{
return;
}
var connection = await courseService.CheckConnection();
if (!connection)
{
await Application.Current.MainPage.DisplayAlert("Error", "No internet connection", "Cancel");
return;
}
await courseService.Delete(Endpoints.DELETE_COURSES, this.CourseID);
await Application.Current.MainPage.DisplayAlert("Message", "The process is successful", "Confirm");
var courseViewModel = CoursesViewModel.GetInstance();
var courseDeleted = courseViewModel.AllCourses.FirstOrDefault(x => x.CourseID == this.CourseID);
courseViewModel.AllCourses.Remove(courseDeleted);
courseViewModel.GetCoursesByTitle();
}
public MainViewModel()
{
instance = this;
Courses = new CoursesViewModel();
CourseInstructors = new CourseInstructorsViewModel();
CreateCourse = new CreateCourseViewModel();
Login = new LoginViewModel();
Home = new HomeViewModel();
//Movies = new MoviesViewModel();
CreateCourseCommand = new Command(async() => await GoToCreateCourse());
}
public MainViewModel()
{
instance = this;
Courses = new CoursesViewModel();
CourseInstructors = new CourseInstructorsViewModel();
Departments = new DepartmentsViewModel();
Students = new StudentsViewModel();
Instructors = new InstructorsViewModel();
Enrollments = new EnrollmentsViewModel();
OfficeAssignments = new OfficeAssignmentsViewModel();
CreateCourse = new CreateCourseViewModel();
CreateStudent = new CreateStudentViewModel();
CreateInstructor = new CreateInstructorViewModel();
Login = new LoginViewModel();
Home = new HomeViewModel();
CreateCourseCommand = new Command(async() => await GoToCreateCourse());
CreateInstructorCommand = new Command(async() => await GoToCreateInstructor());
CreateStudentCommand = new Command(async() => await GoToCreateStudent());
}
public MainViewModel()
{
instance = this;
Students = new StudentsViewModel();
Instructors = new InstructorsViewModel();
Courses = new CoursesViewModel();
CourseInstructors = new CourseInstructorsViewModel();
Login = new LoginViewModel();
Home = new HomeViewModel();
CreateCourse = new CreateCourseViewModel();
CreateStudent = new CreateStudentViewModel();
CreateInstructor = new CreateInstructorViewModel();
//Movies = new MoviesViewModel();
CreateCourseCommand = new Command(async() => await GoToCreateCourse());
CreateInstructorCommand = new Command(async() => await GoToCreateInstructor());
CreateStudentCommand = new Command(async() => await GoToCreateStudent());
}