private void btnDowngradeToTeacher_Click(object sender, EventArgs e)
{
try
{
ListViewItem item = listViewTeachers.SelectedItems[0];
Teacher_Service teacher_Service = new Teacher_Service();
if (item.SubItems[2].Text == "Yes")
{
DialogResult dialogResult = MessageBox.Show("Are you sure you want to demote this supervisor to teacher?", "Are you sure?", MessageBoxButtons.YesNo);
if (dialogResult == DialogResult.Yes)
{
teacher_Service.DowngradeSupervisorToTeacher(item.Text);
}
else if (dialogResult == DialogResult.No)
{
return;
}
}
else
{
MessageBox.Show("Cannot downgrade a teacher who is not a supervisor");
}
}
catch (ArgumentOutOfRangeException)
{
MessageBox.Show("Select an item");
return;
}
showPanel("Teachers");
}
private void btnUpgradeToSupervisor_Click(object sender, EventArgs e)
{
try
{
ListViewItem item = listViewTeachers.SelectedItems[0];
Teacher_Service teacher_Service = new Teacher_Service();
if (item.SubItems[2].Text == "No")
{
teacher_Service.DowngradeSupervisorToTeacher(item.Text);
}
else
{
MessageBox.Show("Cannot upgrade teacher who is already a supervisor");
}
teacher_Service.UpgradeTeacherToSupervisor(item.Text);
}
catch (ArgumentOutOfRangeException)
{
MessageBox.Show("Select an item");
return;
}
showPanel("Teachers");
}