| Visual Basic (Usage) |  Copy Code | 
|---|---|
Dim instance As ValueAxisCollection Dim item As ValueAxis instance.Add(item)  | |
Parameters
- item
 - Axis to add.
 
| Exception | Description | 
|---|---|
| System.ArgumentNullException | item is a null reference (Nothing in VB). | 
Target Platforms: Windows 2000 Professional (SP4), Windows 2000 Server, Windows 2003 Server (SP1), Windows 2008, Windows XP (SP2), Windows Vista, Windows 7, Windows 8