C# - Regex Pattern / Looking For The X_X Numeric Patterns?

Dec 23, 2010

I will have the following possible strings:

12_3

or

12_3+14_1+16_3-400_2

The numbers could be different, but what I'm looking for are the X_X numeric patterns. However, I need to do a replace that will search for 2_3 and NOT return the 12_3 as a valid match.

The +/-'s are arthemtic symbols, and can be any valid value. They also ARENT required (in the example of the first) .. so, I might want to check a string that just has 12_3, and if I pass in 2_3, it would NOT return a match. Only if I passed in 12_3.

This is for a C# script.

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