protected void ProvisionCourses(object sender, EventArgs args)
{
CourseIDs = new List <string>();
// Add the IDs for selected courses to the list
foreach (int selectedIndex in CourseList.GetSelectedIndices())
{
CourseIDs.Add(CourseList.Items[selectedIndex].Value);
}
if (CourseIDs.Count == 0)
{
PageError.Text = "Empty course list.";
}
CourseSelectPanel.Visible = false;
ProvisioningResultsPanel.Visible = true;
}