Inserts a new ConduitSize in to the conduit size settings. The conduit standard name determines the location of the new size in the size table. 
Namespace: Autodesk.Revit.DB.Electrical
Assembly: RevitAPI (in RevitAPI.dll) Version: 24.0.0.0 (24.0.0.0)
Since:  2017 
Syntax
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Parameters
- standardName
 - Type: SystemString
The conduit standard name. 
- sizeInfo
 - Type: Autodesk.Revit.DB.ElectricalConduitSize
The new ConduitSize to be added. 
Exceptions
| Exception | Condition | 
|---|---|
| Autodesk.Revit.ExceptionsArgumentException | The conduit standard name does not exist. -or- The conduit size already exists. | 
| Autodesk.Revit.ExceptionsArgumentNullException | A non-optional argument was null | 
| Autodesk.Revit.ExceptionsInvalidOperationException | The function is called during iterating the size set. |