protected override void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
// Instantiate the business layer and inject the repository.
BusinessLayer.IStudentBLL BLL = new BusinessLayer.StudentBLL((App.Current as App).GetRepository());
// Get the student Id passed as the parameter.
long parameterId = 0;
if (e.Parameter != null && e.Parameter != string.Empty)
{
parameterId = (long)e.Parameter;
// Get the student record
student = BLL.GetStudentById(parameterId);
}
else
{
student = new BusinessEntities.Student();
}
if (student != null)
{
// Set the form values to display the student record.
SetFormValues();
// Set the button descriptions to Save and Cancel, make the Cancel button visible.
this.RegisterStudent.Content = "Save";
}
}
/// <summary>
/// Reads in the parameter passed to this page and uses it to load
/// the Student to display on this page.
/// </summary>
/// <param name="e"></param>
protected override void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
BusinessLayer.IStudentBLL BLL = new BusinessLayer.StudentBLL((App.Current as App).GetRepository());
BusinessEntities.Student student = (BusinessEntities.Student)e.Parameter;
if (student != null && student.Id != 0)
{
// We do this here, not because we have the full student record we need, but because
// eventually we'll be passing an Id instead of the student itself, so the logic is
// right for now.
BusinessEntities.Student result = BLL.GetStudent(student.Firstname, student.Surname);
// Now move the results to the fields.
RefreshUI(result);
}
else
{
student = BLL.FirstStudent();
if (student != null)
{
RefreshUI(student);
}
}
}
private void RefreshUI(BusinessEntities.Student student)
{
// Bind he form to the student record
this.StudentEntry.DataContext = student;
// Preserve Id of current Item being displayed
currentDisplayId = student.Id;
// refresh the UI components with the student data.
//this.txtFirstName.Text = student.Firstname;
//this.txtSurname.Text = student.Surname;
//this.txtDoB.Text = student.DOB.ToString();
//this.cbYearOfStudy.SelectedIndex = ((int)student.YearOfStudy - 1);
//this.txtCourseTitle.Text = student.Course;
//this.txtAddress.Text = student.Address.Address1;
//this.txtTown.Text = student.Address.Town;
//this.txtCounty.Text = student.Address.County;
//this.txtPostCode.Text = student.Address.PostCode;
//this.txtPhoneHome.Text = student.Contact.HomePhone;
//this.txtPhoneMobile.Text = student.Contact.MobilePhone;
//this.txtEmailHome.Text = student.Contact.HomeEmail;
//this.txtEmailStudent.Text = student.Contact.StudentEmail;
}
/// <summary>
/// Initialises the Register Student form.
/// </summary>
/// <remarks>
/// Move this to a helper class so that the code is separate.
/// Referencing the items on the form is not obvious to me
/// at the moment, MUST investigate this further.
/// </remarks>
private void ResetForm()
{
student = new Student();
this.StudentEntry.DataContext = student;
//this.txtFirstNameInput.Text = string.Empty;
//this.txtSurnameInput.Text = string.Empty;
//this.txtDoBInput.Text = string.Empty;
//this.txtCourseTitleInput.Text = string.Empty;
//this.txtAddressInput.Text = string.Empty;
//this.txtTownInput.Text = string.Empty;
//this.txtCountyInput.Text = string.Empty;
//this.txtPostCodeInput.Text = string.Empty;
//this.cbYearOfStudyInput.SelectedIndex = 0;
//this.txtPhoneHomeInput.Text = string.Empty;
//this.txtPhoneMobileInput.Text = string.Empty;
//this.txtEmailHomeInput.Text = string.Empty;
//this.txtEmailStudentInput.Text = string.Empty;
this.currentStudentId = 0;
}
