Creates a new Area BoundaryConditions element on a reference. 
   Namespace:   Autodesk.Revit.Creation  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0) 
Syntax
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| Visual Basic | 
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Parameters
- reference
 -  Type:  Autodesk.Revit.DB Reference  
The Geometry reference obtained from a Wall, Slab or Slab Foundation. 
- X_Translation
 -  Type:  Autodesk.Revit.DB.Structure TranslationRotationValue  
A value indicating the X axis translation option. 
- X_TranslationSpringModulus
 -  Type:  System Double  
Translation Spring Modulus for X axis. Ignored if X_Translation is not "Spring". 
- Y_Translation
 -  Type:  Autodesk.Revit.DB.Structure TranslationRotationValue  
A value indicating the Y axis translation option. 
- Y_TranslationSpringModulus
 -  Type:  System Double  
Translation Spring Modulus for Y axis. Ignored if Y_Translation is not "Spring". 
- Z_Translation
 -  Type:  Autodesk.Revit.DB.Structure TranslationRotationValue  
A value indicating the Z axis translation option. 
- Z_TranslationSpringModulus
 -  Type:  System Double  
Translation Spring Modulus for Z axis. Ignored if Z_Translation is not "Spring". 
Return Value
If successful, NewAreaBoundaryConditions returns an object for the newly created BoundaryConditions with the BoundaryType = 2 - "Area". a null reference ( Nothing in Visual Basic) is returned if the operation fails.Remarks
 This method will only function with the Autodesk Revit Structure application. 
 Examples
 bool CreateAreaConditionWithReference(Wall wall, Autodesk.Revit.Creation.Document docCreation)
 {
     // Get the Geometry reference to the wall
     Reference profileReference = null;
     AnalyticalModel analytical = wall.GetAnalyticalModel() as AnalyticalModel;
     if (null == analytical)
     {
         return false; // the profile reference can't be retrieved.
     }
     // loop through the curves of the wall and get the first one as a reference
     foreach (Curve curve in analytical.GetCurves(AnalyticalCurveType.ActiveCurves))
     {
         profileReference = curve.Reference;
         if (null != profileReference)
         {
             break;
         }
     }
     BoundaryConditions condition = null;
     // Create the Area Boundary Conditions if we have a profileReference
     if (null != profileReference)
     {
         // Create Area Boundary Conditions with profile reference.
         condition = docCreation.NewAreaBoundaryConditions(profileReference, TranslationRotationValue.Fixed, 0,
                                                                             TranslationRotationValue.Fixed, 0,
                                                                             TranslationRotationValue.Fixed, 0);
     }
     return (null != condition);
} Private Function CreateAreaConditionWithReference(wall As Wall, docCreation As Autodesk.Revit.Creation.Document) As Boolean
    ' Get the Geometry reference to the wall
    Dim profileReference As Reference = Nothing
    Dim analytical As AnalyticalModel = TryCast(wall.GetAnalyticalModel(), AnalyticalModel)
    If analytical Is Nothing Then
        ' the profile reference can't be retrieved.
        Return False
    End If
    ' loop through the curves of the wall and get the first one as a reference
    For Each curve As Curve In analytical.GetCurves(AnalyticalCurveType.ActiveCurves)
        profileReference = curve.Reference
        If profileReference IsNot Nothing Then
            Exit For
        End If
    Next
    Dim condition As BoundaryConditions = Nothing
    ' Create the Area Boundary Conditions if we have a profileReference
    If profileReference IsNot Nothing Then
        ' Create Area Boundary Conditions with profile reference.
        condition = docCreation.NewAreaBoundaryConditions(profileReference, TranslationRotationValue.Fixed, 0, TranslationRotationValue.Fixed, 0, TranslationRotationValue.Fixed, _
            0)
    End If
    Return (condition IsNot Nothing)
End Function