public void UpdateResults()
{
if (null == _queryRequestor)
{
return;
}
if (ReferenceEquals(_queryRequestor.QueryResults, QueryResults))
{
return;
}
var queryResults = _queryRequestor.QueryResults;
if (queryResults == null)
{
return;
}
_queryResults = queryResults;
bool rowCountChanged = Count != QueryResults.ResultRows.Count;
var newRow = _newRow;
if (newRow != null)
{
int newRowPos = Items.IndexOf(newRow);
CancelNew(newRowPos);
}
RowItemList.Clear();
RowItemList.AddRange(QueryResults.ResultRows);
if (newRow != null && !NewRowHandler.IsNewRowEmpty(newRow))
{
_newRow = newRow;
AddNew();
}
bool propsChanged = false;
if (_itemProperties == null)
{
propsChanged = true;
}
else if (!_itemProperties.SequenceEqual(QueryResults.ItemProperties))
{
propsChanged = true;
}
_itemProperties = QueryResults.ItemProperties;
AllowNew = NewRowHandler != null;
AllowEdit = true;
AllowRemove = false;
if (propsChanged)
{
OnListChanged(new ListChangedEventArgs(ListChangedType.PropertyDescriptorChanged, 0));
ResetBindings();
}
else if (rowCountChanged || 0 == Count)
{
ResetBindings();
}
else
{
OnAllRowsChanged();
}
}
public bool ValidateRow(int itemIndex, out bool cancelRowEdit)
{
if (IsNewRowPos(itemIndex))
{
return(NewRowHandler.ValidateNewRow(_newRow, out cancelRowEdit));
}
cancelRowEdit = false;
return(true);
}
protected override object AddNewCore()
{
var newRow = _newRow ?? NewRowHandler.AddNewRow();
if (newRow == null)
{
return(null);
}
Items.Add(newRow);
_newRow = newRow;
return(newRow);
}
public override void EndNew(int itemIndex)
{
RowItem committedRow = null;
if (IsNewRowPos(itemIndex))
{
committedRow = NewRowHandler.CommitAddNew(_newRow);
_newRow = null;
}
base.EndNew(itemIndex);
if (committedRow != null)
{
Items[itemIndex] = committedRow;
}
}
