Creates a new Viewport at a given location on a sheet. 
   Namespace:   Autodesk.Revit.DB  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 22.0.0.0 (22.1.0.0) 
  Since:  2013 
Syntax
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Parameters
- document
-  Type:  Autodesk.Revit.DB Document  
 The document to which the new Viewport will be added.
- viewSheetId
-  Type:  Autodesk.Revit.DB ElementId  
 The ViewSheet on which the new Viewport will be placed.
- viewId
-  Type:  Autodesk.Revit.DB ElementId  
 The view shown in the Viewport.
- point
-  Type:  Autodesk.Revit.DB XYZ  
 The new Viewport will be centered on this point.
Return Value
The new Viewport.Remarks
 Use  [!:Autodesk::Revit::DB::ScheduleSheetInstance::Create()]  to add schedules to sheets. 
 Exceptions
| Exception | Condition | 
|---|---|
| Autodesk.Revit.Exceptions ArgumentException | viewSheetId is not a ViewSheet. -or- viewId cannot be added to the ViewSheet. -or- Plan view creation is not allowed in this family. | 
| Autodesk.Revit.Exceptions ArgumentNullException | A non-optional argument was null | 
| Autodesk.Revit.Exceptions ForbiddenForDynamicUpdateException | This method may not be called during dynamic update. | 
| Autodesk.Revit.Exceptions ModificationForbiddenException | The document is in failure mode: an operation has failed, and Revit requires the user to either cancel the operation or fix the problem (usually by deleting certain elements). -or- The document is being loaded, or is in the midst of another sensitive process. | 
| Autodesk.Revit.Exceptions ModificationOutsideTransactionException | The document has no open transaction. |