On Error
Error handling. For scripts designed to run against multiple computers or printers it is important to including error handling in case the remote machine is off-line.
Syntax
On Error resume next - Enable error handling
On Error goto 0 - Disable error handling
Error properties:
err.Number (default)
err.Source
err.Description
Examples
In the examples below - replace the 'code goes here' line with your VBScript commands.
Example 1) Trap an error
On Error Resume Next
' code goes here
If Err.Number <> 0 Then
'error handling:
WScript.Echo Err.Number & " Srce: " & Err.Source & " Desc: " & Err.Description
Err.Clear
End If
Example 2) Trap an error or success
On Error Resume Next
' code goes here
If Err.Number = 0 Then
WScript.Echo "It worked!"
Else
WScript.Echo "Error:"
WScript.Echo Err.Number & " Srce: " & Err.Source & " Desc: " & Err.Description
Err.Clear
End If
Example 3) Trap an error
On Error Resume Next
' code goes here
If Err.Number <> 0 Then ShowError("It failed")
Sub ShowError(strMessage)
WScript.Echo strMessage
WScript.Echo Err.Number & " Srce: " & Err.Source & " Desc: " & Err.Description
Err.Clear
End Sub
