protected async Task OnDeleteCommand(TItem item)
{
if (Data is ICollection <TItem> data)
{
if (await IsSafeToProceed(RowRemoving, item))
{
if (UseInternalEditing)
{
if (data.Contains(item))
{
data.Remove(item);
}
}
await RowRemoved.InvokeAsync(item);
dirtyFilter = dirtyView = true;
}
}
// When deleting and the page becomes empty and we aren't the first page:
// go to the previous page
if (ManualReadMode && ShowPager && CurrentPage > paginationContext.FirstVisiblePage && !Data.Any())
{
await OnPaginationItemClick((CurrentPage - 1).ToString());
}
}
/// <summary>
/// Removes the specified row from the outline. A row must have 0 children before
/// it can be removed. Callers are responsible for reparenting or removing any
/// children prior to a move.
/// </summary>
public void RemoveRow(Row row)
{
if (row == RootRow)
{
throw new InvalidOperationException("Root row cannot be removed.");
}
if (row.Children.Any())
{
throw new InvalidOperationException("Row cannot be removed because it has children.");
}
if (!row.ParentRow.Children.Contains(row))
{
throw new InvalidOperationException("Row not found. It may have already been removed.");
}
row.ParentRow._children.Remove(row);
RowRemoved?.Invoke(this, new RowRemovedEventArgs(row));
}
protected async Task OnDeleteCommand(TItem item)
{
if (Data is ICollection <TItem> data)
{
if (IsSafeToProceed(RowRemoving, item))
{
if (UseInternalEditing)
{
if (data.Contains(item))
{
data.Remove(item);
}
}
}
await RowRemoved.InvokeAsync(item);
dirtyFilter = dirtyView = true;
}
}
///<summary>Raises the RowRemoved event.</summary>
///<param name="e">A RowEventArgs object that provides the event data.</param>
protected virtual void OnRowRemoved(RowListEventArgs e)
{
EventSequence.Execute(() => RowRemoved?.Invoke(this, e));
}
protected override void OnRowRemoved(RowListEventArgs e)
{
base.OnRowRemoved(e);
EventSequence.Execute(() => RowRemoved?.Invoke(this, new RowListEventArgs <TRow>((TRow)e.Row, e.Index)));
}
protected void OnRowRemoved(RowRemovedEventArgs e) => RowRemoved?.Invoke(this, e);