Android Question FileNotFoundException

[Declan]

I am using the following code to select a file using a ListView.

Sub lvNovels_ItemClick (Index As Int, Value As Object)
    Dim PDF As String
    PDF = Value
    File.Copy(File.DirRootExternal, "/Books/" & PDF & ".pdf",File.DirInternal, "testbook.pdf" )
    CacheDir = File.Combine(File.DirInternalCache, "images")
    File.MakeDir("", CacheDir)
    OpenFilePDF(File.Combine(File.DirInternal, "testbook.pdf"))
End Sub

If there is no associated file, I get the following error:

java.io.FileNotFoundException: /storage/emulated/0/Books/9780797815506.pdf: open failed: ENOENT (No such file or directory)

How can I "trap" this error to display a Toastmessage that the book is unavailable?

 

[Erel]

You can check if the file exists with:

If File.Exists(...) = False Then
  'show message
Else
 'copy
End If