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How to handle ISNUMERIC() function ?

Posted By:      Posted Date: April 10, 2011    Points: 0   Category :

I have a task (Derived Column Task) and I want to write something like this :

   IsNumeric(aColumnOfString) == true ? "All numbers" : "there are some characters"

Here aColumnOfString can be something like "123a5" or 12345".  I do not want to simply check if the left-most character is a number or not.  I want to check the entire expression and return me a TRUE or false.


A TRUE is returned if the entire expression contains ONLY numbers, and FALSE otherwise.

I read some posting using regular expression. But that is not a solution for this situation.

Anyone knows how to accomplish this, please help! 


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