We recommend using Visual Studio 2017

AggregationDesignAttributeCollection.IndexOf Method

Gets the index of an AggregationDesignAttribute.

This member is overloaded. For complete information about this member, including syntax, usage, and examples, click a name in the overload list.

Public method IndexOf(String) Gets the index of an AggregationDesignAttribute with the specified identifier.
Public method IndexOf(AggregationDesignAttribute) Gets the index of a specified AggregationDesignAttribute.
Protected method IndexOf(IModelComponent) (Inherited from ModelComponentCollection.)