Inserts a new vertex before the specified index. 
   Namespace:   Autodesk.Revit.DB.Electrical  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 22.0.0.0 (22.1.0.0) 
  Since:  2015 
Syntax
| C# | 
|---|
|  | 
| Visual Basic | 
|---|
|  | 
| Visual C++ | 
|---|
|  | 
Parameters
- index
-  Type:  System Int32  
 The index of the vertex to come after this new vertex. Should be between 0 and NumberOfVertices .
- vertexPoint
-  Type:  Autodesk.Revit.DB XYZ  
 The point of the new vertex.
Remarks
 To add a new vertex to the end of the wire, use  AppendVertex(XYZ)  . 
 Exceptions
| Exception | Condition | 
|---|---|
| Autodesk.Revit.Exceptions ArgumentException | The index should be between 0 and the number of vertices of the wire. -or- The vertex point cannot be added to the wire because there is already a vertex at this position on the view plane (within tolerance). | 
| Autodesk.Revit.Exceptions ArgumentNullException | A non-optional argument was null | 
| Autodesk.Revit.Exceptions DisabledDisciplineException | None of the following disciplines is enabled: Mechanical Electrical Piping. | 
| Autodesk.Revit.Exceptions InvalidOperationException | Can't insert the vertex before the start vertex if the start point connects to one element. |