Creates a new EndTreatmentType in a document and adds the input string to the endTreatment parameter. 
   Namespace:   Autodesk.Revit.DB.Structure  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 17.0.0.0 (17.0.1090.0) 
  Since:  2017 
Syntax
| C# | 
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| Visual Basic | 
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| Visual C++ | 
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Examples
 Copy  C#
 Copy  C# private void NewEndTreatmentForCouplerType(Document doc, ElementId couplerTypeId)
{
    EndTreatmentType treatmentType = EndTreatmentType.Create(doc, "Custom");
    FamilySymbol couplerType = doc.GetElement(couplerTypeId) as FamilySymbol;
    Parameter param = couplerType.get_Parameter(BuiltInParameter.COUPLER_MAIN_ENDTREATMENT);
    param.Set(treatmentType.Id);
} Copy  VB.NET
 Copy  VB.NET Private Sub NewEndTreatmentForCouplerType(doc As Document, couplerTypeId As ElementId)
    Dim treatmentType As EndTreatmentType = EndTreatmentType.Create(doc, "Custom")
    Dim couplerType As FamilySymbol = TryCast(doc.GetElement(couplerTypeId), FamilySymbol)
    Dim param As Parameter = couplerType.Parameter(BuiltInParameter.COUPLER_MAIN_ENDTREATMENT)
    param.[Set](treatmentType.Id)
End SubExceptions
| Exception | Condition | 
|---|---|
| Autodesk.Revit.Exceptions ArgumentNullException | A non-optional argument was NULL |