private void btnDelete_Click(object sender, RoutedEventArgs e)
{
//Student ID validation
if (clsValidation.ValidateForEmptiness(CmbStudentId.Text) == false)
{
MessageBox.Show("Student id is required");
}
//Class Name validation
else if (clsValidation.ValidateForEmptiness(CmbClasses.Text) == false)
{
MessageBox.Show("Class name is required");
}
//Payment validation
else if (clsValidation.ValidateForEmptiness(TxtPayment.Text) == false)
{
MessageBox.Show("Payment is required");
}
else if (clsValidation.ValidateForNumeric(TxtPayment.Text) == false)
{
MessageBox.Show("Payment is not a number");
}
else
{
clsEnrollment ObjEnrollment = new clsEnrollment(int.Parse(TxtEnrollmentId.Text));
ObjEnrollment.DeleteEnrollment();
}
}
private void btnAdd_Click(object sender, RoutedEventArgs e)
{
//Course Id validation
if (clsValidation.ValidateForEmptiness(TxtEnrollmentId.Text) == false)
{
MessageBox.Show("Course id is required");
}
else if (clsValidation.ValidateForNumeric(TxtEnrollmentId.Text) == false)
{
MessageBox.Show("Course id is not a number");
}
else if (clsValidation.ValidateForLength(TxtEnrollmentId.Text, 5) == false)
{
MessageBox.Show("Course id is not 5 digits");
}
//Student ID validation
else if (clsValidation.ValidateForEmptiness(CmbStudentId.Text) == false)
{
MessageBox.Show("Student id is required");
}
//Class Name validation
else if (clsValidation.ValidateForEmptiness(CmbClasses.Text) == false)
{
MessageBox.Show("Class name is required");
}
//Payment validation
else if (clsValidation.ValidateForEmptiness(TxtPayment.Text) == false)
{
MessageBox.Show("Payment is required");
}
else if (clsValidation.ValidateForNumeric(TxtPayment.Text) == false)
{
MessageBox.Show("Payment is not a number");
}
else
{
clsEnrollment ObjEnrollment =
new clsEnrollment(int.Parse(TxtEnrollmentId.Text), int.Parse(CmbStudentId.SelectedValue.ToString()),
int.Parse(CmbClasses.SelectedValue.ToString()), double.Parse(TxtPayment.Text));
int enrollmentid = ObjEnrollment.AddEnrollment();
if (enrollmentid == -1)
{
MessageBox.Show("Can't pay for this course");
}
else
{
TxtEnrollmentId.Text = enrollmentid.ToString();
MessageBox.Show("Successful pay for this course");
}
}
}
private void CmbClasses_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
clsEnrollment ObjEnrollment = new clsEnrollment();
MessageBox.Show(CmbClasses.SelectedValue.ToString());
ObjEnrollment.ClassId = int.Parse(CmbClasses.SelectedValue.ToString());
Double Fee = ObjEnrollment.SearchFee();
if (Fee != 0.0 & Fee != 0)
{
MessageBox.Show("Success to search fee for this class");
LabFee.Content = Fee.ToString();
}
else
{
MessageBox.Show("Problem to find fee for this class");
LabFee.Content = "Problem to find fee for this class";
}
}
