public GroupTestViewModel(IAccountBalanceDataService service)
{
var accountsTable = service.Accounts;
_groupedAccounts = new AggregatedTable(accountsTable);
_groupedAccounts.GroupBy <int>(AccountColumns.PersonId);
var balanceColumn = (IReactiveColumn <decimal>)accountsTable.GetColumnByName(AccountColumns.AccountBalance);
_groupedAccounts.AddAggregate(balanceColumn, SumColumnId, () => new Sum <decimal>());
_groupedAccounts.AddAggregate(balanceColumn, CountColumnId, () => new Count <decimal>());
_groupedAccounts.FinishInitialisation();
var groups = new IndexedObservableCollection <BalanceGroup, int>(g => g.RowIndex);
_groupedAccounts.ReplayAndSubscribe(
update =>
{
if (update.Action == TableUpdateAction.Add)
{
groups.Add(new BalanceGroup(_groupedAccounts, update.RowIndex));
}
else if (update.Action == TableUpdateAction.Delete)
{
groups.RemoveAt(groups.GetIndexForKey(update.RowIndex));
}
});
var accounts = new IndexedObservableCollection <AccountViewModel, int>(a => a.RowIndex);
accountsTable.ReplayAndSubscribe(
update =>
{
if (update.Action == TableUpdateAction.Add)
{
var accountViewModel = new AccountViewModel(accountsTable, update.RowIndex);
accounts.Add(accountViewModel);
Debug.WriteLine("{1},Adding,,{0},", update.RowIndex, DateTime.Now.ToLongTimeString());
}
else if (update.Action == TableUpdateAction.Delete)
{
var indexForKey = accounts.GetIndexForKey(update.RowIndex);
var accountViewModel = accounts[indexForKey];
accounts.RemoveAt(indexForKey);
Debug.WriteLine("{1},Removing,{0}", accountViewModel.PersonId, DateTime.Now.ToLongTimeString());
}
else
{
var indexForKey = accounts.GetIndexForKey(update.RowIndex);
var accountViewModel = accounts[indexForKey];
Debug.WriteLine("{1},Modifying,{0},{2},{3}",
accountViewModel.PersonId, DateTime.Now.ToLongTimeString(), update.RowIndex, update.Column.ColumnId);
}
});
Groups = groups;
Accounts = accounts;
}