Specifies the series layout direction for the Simple Diagram.
public LayoutDirection LayoutDirection { get; set; }
Public Property LayoutDirection As LayoutDirection
When a familiar data source (such as the DevExpress.XtraPivotGrid.PivotGridControl) is assigned to the DevExpress.XtraCharts.ChartControl.DataSource property, the SimpleDiagram.LayoutDirection property of the 2D Simple Diagram (or, the SimpleDiagram3D.LayoutDirection property of the 3D Simple Diagram) is auto-adjusted, and it's impossible to customize this property at design time.
Use the LayoutDirection property, to set a value to this property at runtime, in the DevExpress.XtraCharts.ChartControl.CustomizeSimpleDiagramLayout (or, DevExpress.XtraCharts.Web.WebChartControl.CustomizeSimpleDiagramLayout) event handler.
For more information, see Pivot Charting (Integration with a Pivot Grid Control).