public void EditCourse_Click(object sender, EventArgs e)
{
int ID = Convert.ToInt32(CourseControl.listView.SelectedItems[0].SubItems[0]);
AddCourseForm addCou = new AddCourseForm();
addCou.ShowForm(ID);
}
public void AddCourse_Click(object sender, EventArgs e)
{
AddCourseForm addCou = new AddCourseForm();
addCou.ShowForm();
}