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| ArcObjects Help for .NET developers > ArcObjects namespaces > Carto > ESRI.ArcGIS.Carto > Interfaces > IS > ISeriesProperties Interface > ISeriesProperties.HorizontalAxis Property (ArcObjects .NET 10.5 SDK) | 
Index of horizontal axis.
[Visual Basic .NET] Public Property HorizontalAxis As Integer
[C#] public int HorizontalAxis {get; set;}
[C++]
HRESULT get_HorizontalAxis(
  long* pIdx
);
[C++]
HRESULT put_HorizontalAxis(
  long pIdx
);
[C++]
Parameters pIdx [out, retval] pIdx is a parameter of type long pIdx [in] pIdx is a parameter of type long