private void btnCreate_Click(object sender, EventArgs e)
{
//Get workshop data
string title = tbxTitle.Text;
string description = rtbDescription.Text;
int capacity = (int)numCapacity.Value;
//Create a new workshop
try
{
Workshop ws = null;
if (!String.IsNullOrEmpty(title) || !String.IsNullOrEmpty(description) || capacity > 0)
{
if (rbInBuilding.Checked)
{
string address = tbxAddress.Text;
int roomNumber = (int)numRoomNumber.Value;
if (String.IsNullOrEmpty(address) || roomNumber <= 0)
{
throw new ArgumentException("Please provide valid address and room number values");
}
ws = new InBuildingWorkshop(title, description, capacity, address, roomNumber);
}
else if (rbOnline.Checked)
{
string url = tbxURL.Text;
if (String.IsNullOrEmpty(url))
{
throw new ArgumentException("URL cannot be null or empty");
}
ws = new OnlineWorkshop(title, description, capacity, url);
}
else
{
MessageBox.Show($"Please select a workshop type (Online/In Building)");
return;
}
//Add to list
this.workshops.Add(ws);
Data.UpdateWorkshops(this.workshops);
Dashboard dashboard = new Dashboard();
this.Hide();
dashboard.ShowDialog();
}
else
{
MessageBox.Show($"Please fill all the required fields.");
return;
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
public void Disenroll(Workshop ws)
{
if (this.enrolments.Any(w => w.Key.WorkshopCode == ws.WorkshopCode))
{
Workshop workshop = this.enrolments.Keys.First(e => e.WorkshopCode == ws.WorkshopCode);
this.enrolments.Remove(workshop);
}
else
{
throw new WorkshopArgumentException($"Workshop not found.");
}
}
private void btnRemoveWorkshop_Click(object sender, EventArgs e)
{
try
{
Workshop ws = (Workshop)lbxWorkshops.SelectedItem;
Data.UpdatePeople(this.people);
this.RemoveWorkshop(ws);
}
catch (NullReferenceException)
{
MessageBox.Show($"Please select a workshop first");
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void RemoveWorkshop(Workshop ws)
{
if (this.workshops.Any(w => w.WorkshopCode == ws.WorkshopCode))
{
ws = this.workshops.First(w => w.WorkshopCode == ws.WorkshopCode);
foreach (var person in this.people)
{
if (person.Enrolments.Any(e => e.Key.WorkshopCode == ws.WorkshopCode))
{
person.Disenroll(ws);
}
}
this.workshops.Remove(ws);
Data.UpdateWorkshops(this.workshops);
Data.UpdatePeople(this.people);
UpdateWorkshopsList();
}
else
{
throw new WorkshopNotFoundException($"{ws.Title} not found.");
}
}
public void Enroll(Workshop ws)
{
this.enrolments.Add(ws, ws.WorkshopCode);
}