private void deleteCourse_button_Click(object sender, EventArgs e)
{
if (listView.SelectedItems.Count == 0)
{
MessageBox.Show("No course was selected.");
return;
}
else if (listView.SelectedItems.Count > 1)
{
MessageBox.Show("Choose only one course to delete at the time.");
return;
}
HeadOfDepartmentSQL headOfDepartmentSql = new HeadOfDepartmentSQL(this.sqlConnection);
int courseID;
try
{
courseID = Convert.ToInt16(this.listView.SelectedItems[0].SubItems[0].Text);
}
catch (Exception errorMsg)
{
MessageBox.Show(errorMsg.Message);
return;
}
headOfDepartmentSql.DeleteCourse(courseID);
CourseSQL.LoadCoursesToListView(ref this.listView);
}
