internal void OnCommittingNewItem(DataGridCommittingNewItemEventArgs e)
{
if (this.CommittingNewItem != null)
{
this.CommittingNewItem(this, e);
}
}
public override void CommitNew()
{
// We are not calling base since the intended behavior is quite different with Virtualizing collection views.
object currentAddItem = this.CurrentAddItem;
if (currentAddItem == null)
{
return;
}
DataGridCommittingNewItemEventArgs committingNewItemEventArgs =
new DataGridCommittingNewItemEventArgs(this, currentAddItem, false);
this.RootDataGridCollectionViewBase.OnCommittingNewItem(committingNewItemEventArgs);
if (committingNewItemEventArgs.Cancel)
{
throw new DataGridException("CommitNew was canceled.");
}
if (!committingNewItemEventArgs.Handled)
{
throw new InvalidOperationException("When manually handling the item-insertion process the CreatingNewItem, CommittingNewItem, and CancelingNewItem events must all be handled.");
}
// Contrarily to the data bound collection views, we do not care about the new index or new count since we will enqueue a Refresh operation.
this.SetCurrentAddNew(null, -1);
this.ExecuteOrQueueSourceItemOperation(new DeferredOperation(DeferredOperation.DeferredOperationAction.Refresh, -1, null));
}