private void btnDelete_Click(object sender, EventArgs e)
{
//prompts a validation message to ensure selection
DialogResult dialogResult = MessageBox.Show("Are you sure you want to delete this taught course?",
"Delete Notice", MessageBoxButtons.YesNo);
//if yes, the taught course object is created and passed to be deleted
if (dialogResult == DialogResult.Yes)
{
TaughtCourse tCourse = (TaughtCourse)this.cmbTaughtID.SelectedItem;
//Delete All Related Records First
//From Schedule Table
scheduleList.Delete("Section", "Section.SectionID", "Schedule.SectionID", "Section.TaughtCourseID", cmbTaughtID.SelectedItem.ToString());
//From SectionStudent Table
sectionStudentList.Delete("Section", "Section.SectionID", "SectionStudent.SectionID", "Section.TaughtCourseID", cmbTaughtID.SelectedItem.ToString());
//From Section Table
sectionList.Delete("TaughtCourseID", cmbTaughtID.SelectedItem.ToString());
//Delete Taught Course From Taught Courses Table Second
taughtCourses.Delete(tCourse);
//checks if the execution was a seccuess or not
if (tCourse.getValid() == true)
{
MessageBox.Show("Taught Course has been deleted successfully.");
}
else
{
MessageBox.Show("An error has occured. Record was not deleted.");
}
loadTCourses();
}
}
private void btnDelete_Click(object sender, EventArgs e)
{
DialogResult dialogResult = MessageBox.Show("Are you sure you want to delete this section?",
"Delete Notice", MessageBoxButtons.YesNo);
if (dialogResult == DialogResult.Yes)
{
Section section = (Section)cmbSectionID.SelectedItem;
//Delete All Related Records First
//From SectionStudent Table
sectionStudentList.Delete("SectionID", cmbSectionID.SelectedItem.ToString());
//From Schedule Table
scheduleList.Delete("SectionID", cmbSectionID.SelectedItem.ToString());
//Delete Section From Section Table Second
sectionList.Delete(section);
if (section.getValid() == true)
{
MessageBox.Show("Section has been deleted successfully.");
}
else
{
MessageBox.Show("An error has occured. record was not added.");
}
}
PopulateSections();
}
//Deletes the selected instructor from the combobox from the databse
private void ButtonDelete_Click(object sender, EventArgs e)
{
//Prompt the user if he wants to delete the instructor (for confirmation)
DialogResult dialogResult = MessageBox.Show("Are you sure you want to delete this instructor?",
"Delete Notice", MessageBoxButtons.YesNo);
//If the user clicks Yes Button
if (dialogResult == DialogResult.Yes)
{
Instructor instructor = (Instructor)comboBoxID.SelectedItem;
//Delete All Related Records First
//From Schedule Table
scheduleList.Delete("Section", "Section.SectionID", "Schedule.SectionID", "Section.InstructorID", comboBoxID.SelectedItem.ToString());
//From SectionStudent Table
sectionStudentList.Delete("Section", "Section.SectionID", "SectionStudent.SectionID", "Section.InstructorID", comboBoxID.SelectedItem.ToString());
//From Section Table
sectionList.Delete("InstructorID", comboBoxID.SelectedItem.ToString());
//Delete Instructor From Instructor Table Second
instructorList.Delete(instructor);
//Check if instructor is valid or not and show appropriate message
if (instructor.getValid() == true)
{
MessageBox.Show("Instructor has been deleted successfully.");
}
else
{
MessageBox.Show("An error has occured. record was not added.");
}
}
//Re-populate the comboboxes after the deletion
PopulateInstructors();
}