Published:
07 Oct 2003
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Abstract
The cInt function raises an exception when passed a null value, blank string, or non-numerical string. You can adapt the function to cInt2 to handle these values and use it in the same manner. |
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by Dan Powderhill
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| Introduction |
When you work with forms and databases a lot you will often want to save the numerical value of a form element, in particular a group of radio buttons, to a database. In general this is easy, however if the field is not mandatory and the user chooses not to answer then the value which gets passed is null, or a blank string. If you pass the cInt function a null value, blank string, or non-numerical string it raises an exception.
Whilst that in itself isn’t a problem as you can write a routine to check the value before using cInt and make sure it is a valid number, it is easier simply to adapt the cInt function to handle them. |
| cInt2 Function |
The function below, cInt2, does just that and can be used in the same way as the regular cInt function.
function cInt2(strInput)
'Remove any trailing or leading spaces
strInput = trim(strInput)
'If the input is null, blank, or not a number then set it to zero
if strInput = "" or isNull(strInput) or not isNumeric(strInput) then strInput = "0"
' Convert it to an integer using the regular cInt function and return it.
cInt2 = cInt(strInput)
end function |
This function could also be adapted to cater for converting the “on” value passed by checked checkboxes to a given integer. |
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User Comments
Title:
Great stuff!!
Name:
Peter
Date:
2008-11-11 7:42:05 AM
Comment:
Thanks so much - saved me time (that I dont have) in resolving this issue!! Beautiful.
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