Adds a new flexible duct into the document, 
using two connector, and duct type.
Namespace: Autodesk.Revit.CreationAssembly: RevitAPI (in RevitAPI.dll) Version: 21.0.0.0 (21.1.1.109)
 Syntax
Syntax
| C# | 
|---|
| public FlexDuct NewFlexDuct( Connector connector1, Connector connector2, FlexDuctType ductType ) | 
| Visual Basic | 
|---|
| Public Function NewFlexDuct ( _ connector1 As Connector, _ connector2 As Connector, _ ductType As FlexDuctType _ ) As FlexDuct | 
| Visual C++ | 
|---|
| public: FlexDuct^ NewFlexDuct( Connector^ connector1, Connector^ connector2, FlexDuctType^ ductType ) | 
Parameters
- connector1
- Type: Autodesk.Revit.DB..::..Connector
 The first connector to be connected to the duct.
- connector2
- Type: Autodesk.Revit.DB..::..Connector
 The second connector to be connected to the duct.
- ductType
- Type: Autodesk.Revit.DB.Mechanical..::..FlexDuctType
 The type of the flexible duct.
Return Value
If creation was successful then a new flexible duct is returned, otherwise an exception with failure information will be thrown. Remarks
Remarks
If the connectors are fitting or equipment connectors of the correct domain, 
and if the connectors' direction match the direction of the flexible duct to be created, 
the connectors will be automatically connected. A transition fitting will be added 
at the connector(s) if necessary. If the connector's type, domain, 
does not match the one of the input connector, no connection will be established.
 Exceptions
Exceptions
| Exception | Condition | 
|---|---|
| Autodesk.Revit.Exceptions..::..ArgumentNullException | Thrown when the input argument connector1 or connector2 is nullNothingnullptra null reference (Nothing in Visual Basic). | 
| Autodesk.Revit.Exceptions..::..InvalidOperationException | Thrown when the flexible duct cannot be created or regenerate fails. | 
| Autodesk.Revit.Exceptions..::..ArgumentException | Thrown if the flexible duct type does not exist in the given document. | 





