Collects the ids of all StructuralConnectionTypes in the document. 
   Namespace:   Autodesk.Revit.DB.Structure  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 22.0.0.0 (22.1.0.0) 
  Since:  2011 
Syntax
| C# | 
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| Visual Basic | 
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| Visual C++ | 
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Parameters
- cda
 -  Type:  Autodesk.Revit.DB Document  
 
- ids
 -  Type:  System.Collections.Generic ICollection   ElementId   %  
 
Exceptions
| Exception | Condition | 
|---|---|
| Autodesk.Revit.Exceptions ArgumentNullException | A non-optional argument was null |