[C1CategoryAttribute("Category.Appearance")]
[LayoutAttribute(LayoutType.Appearance)]
[JsonAttribute(true, true, "Drag a column here to group by that column.")]
[DefaultValueAttribute("Drag a column here to group by that column.")]
public string GroupByCaption { get; set; }

<C1CategoryAttribute("Category.Appearance")> _
<LayoutAttribute(LayoutType.Appearance)> _
<JsonAttribute(True, True, "Drag a column here to group by that column.")> _
<DefaultValueAttribute("Drag a column here to group by that column.")> _
Public Property GroupByCaption As String
	Get
	Set