private void RefreshActivityPanel()
{
txtActivityID.Enabled = false;
btnRemoveActivity.Enabled = false;
btnUpdateActivity.Enabled = false;
txtActivityID.ResetText();
txtActivityDescription.ResetText();
txtActivityDate.ResetText();
txtStartTime.ResetText();
txtEndTime.ResetText();
//fill activity list with all activities retrieved from the database
Activity_Service activityService = new Activity_Service();
List <Activity> activities = activityService.GetAllActivities();
//Clear listview before filling again
listViewActivities.Clear();
//fill listview with list from database
foreach (Activity a in activities)
{
ListViewItem lvi = new ListViewItem(a.activityID.ToString(), 0);
lvi.SubItems.Add(a.description);
lvi.SubItems.Add(a.startDate.ToString("dd-MM-yyyy HH:mm"));
lvi.SubItems.Add(a.endDate.ToString("dd-MM-yyyy HH:mm"));
lvi.Tag = a;
listViewActivities.Items.Add(lvi);
}
//Add Columns
ColumnHeader actId = new ColumnHeader();
actId.Text = "Activity ID";
ColumnHeader desc = new ColumnHeader();
desc.Text = "Description";
ColumnHeader start = new ColumnHeader();
start.Text = "StartDate/Time";
ColumnHeader end = new ColumnHeader();
end.Text = "EndDate/Time";
listViewActivities.Columns.AddRange(new ColumnHeader[] { actId, desc, start, end });
listViewActivities.AutoResizeColumns(ColumnHeaderAutoResizeStyle.ColumnContent);
listViewActivities.AutoResizeColumns(ColumnHeaderAutoResizeStyle.HeaderSize);
}