Question

The following VB script check the valid IP by Test function

if we get OK from the test function then
We break from loop ValidIP=OK
If not the inputBox ask the question until ValidIP=OK

But sometimes I want to exit from loop by cancel button

How to break loop by the cancel button (in order to set the ValidIP as OK)

Do Until ValidIP=OK
    IPrange=InputBox("Enter IP address range",,"172.17.202.1-10,192.9.200.1-100")
    Test IPrange, strPattern 
Loop

Answer 1

Put something like the code below before the Test… row (code written from old memories of how vbscript works):

If Len(IPrange) = 0 Then
    Exit Do
End 

When the user clicks Cancel the InputBox returns a 0 length string.