[ObsoleteAttribute("This property is obsolete in Revit 2017. Use FontHeight instead.")]
public double TextSize { get; }

<ObsoleteAttribute("This property is obsolete in Revit 2017. Use FontHeight instead.")> _
Public ReadOnly Property TextSize As Double
	Get

[ObsoleteAttribute(L"This property is obsolete in Revit 2017. Use FontHeight instead.")]
public:
property double TextSize {
	double get ();
}

The value specifies the height of the text excluding both the ascender and descender. It is approximately the height of capital letters in the font.