That will work with one field, but is there not a way to do it the other way. That way I can control multiple fields with one toggle button.

Thanks
CLifford

Thanks, just had to do it with background code:

private void ExtendedDisplayToggleButton_Checked(object sender, RoutedEventArgs e)
{
	ShowHideFields(Visibility.Visible);
}

private void ExtendedDisplayToggleButton_Unchecked(object sender, RoutedEventArgs e)
{
	ShowHideFields(Visibility.Collapsed);
}
 
private void ShowHideFields(Visibility showHide)
{
	var fields = xdgMain.FieldLayouts[0].Fields;
	foreach (var field in fields)
	{
		switch (field.Name)
		{
			case "Owner":
			case "TradeDate":
			case "SettleDate":
			case "MinSettleDays":
			case "Comment":
			case "TotalMarketValue":
			case "PercentMarketValue":
			case "PortfolioManager":
			case "Freeze":
			case "MinSettleRule":
			case "T0CashProjection":
			case "T1CashProjection":
			case "T2CashProjection":
			case "T3CashProjection":
			case "T4CashProjection":
			case "T5CashProjection":
				field.Visibility = showHide;
				break;
		}
	}
}