Warning
This item was deprecated in version 2019r3. There is no replacement.
## Description
Attempts to open the **FolderItem** as a VirtualVolume. It returns `Nil` if the **FolderItem** is not a VirtualVolume.
## Notes
It is opened as Read/Write unless it is locked at the operating system level.
## Sample code
The following example reads a text file that was saved earlier. It is passed the name of the file.
``` xojo
Sub ReadTextFile(s As String)
' reads the text file in the VirtualVolume
Var f, virtualFile As Folderitem
Var v As VirtualVolume
f = FolderItem.ShowOpenFileDialog("myVirtualVolume")
If f <> Nil Then
v = f.OpenAsVirtualVolume
If v <> Nil Then
virtualFile = v.Root.Child(s)
If VirtualFile <> Nil Then
Var stream As BinaryStream
stream = BinaryStream.Open(virtualFile, False)
Do
TextArea2.AddText(stream.Read(255))
Loop Until stream.EndOfFile
stream.Close
End If
End If
End If
End Sub
```
## Compatibility
All project types on all supported operating systems.