// methods
////////////////////////// BEGIN YOUR CODE HERE ///////////////////////////////
/// <summary>
/// btnAddParticipant_Click(object sender, EventArgs e)
/// Button event handler to add a participant with the specified data
/// to the course that is currently selected in the listbox
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnAddParticipant_Click(object sender, EventArgs e)
{
// To do, assignment 4
try
{
mySchool.AddParticipantToCourse(((Course)lbCourseOverview.SelectedItem).CourseId, Convert.ToInt32(tbParticipantId.Text), tbParticipantName.Text);
ShowAllCourses();
}
catch (NullReferenceException)
{
MessageBox.Show("You have to select a course.");
}
catch (FormatException)
{
MessageBox.Show("The format of the participant ID and/or name is incorrect.");
}
catch (CourseException ex)
{
MessageBox.Show(ex.Message);
}
}
