ArcObjects Library Reference (Geometry)

ISpheroid.SemiMajorAxis Property

The semi-major axis length of this spheroid.

[Visual Basic .NET]
Public ReadOnly Property SemiMajorAxis As Double

[C#]
public double SemiMajorAxis {get;}

[C++]
HRESULT get_SemiMajorAxis(
  double* axis
);

[C++]
Parameters
axis [out, retval]
  axis is a parameter of type double

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

[C#]     private void PrintSpheroid(ISpheroid spheroid)
    {
        System.Windows.Forms.MessageBox.Show(spheroid.SemiMajorAxis.ToString());
    }