Cardinality for the relationship.
ERROR: Syntax information about IRelateInfo2.Cardinality may not be in D:\ArcGIS\DotNet\ESRI.ArcGIS.Carto.dll
[C++]
HRESULT get_Cardinality(
esriRelCardinality* Cardinality
);
[C++]Parameters
Cardinality [out, retval]Cardinality is a parameter of type esriRelCardinality
Product Availability
Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.