RegEx Replacement

Posted on 2014-04-09
Last Modified: 2014-04-09
Need to remove a bunch of single ' and double " from some text strings.  I'm using C# 2013 to loop the DB and the only real catch stopping me from using a simple replace is the fact I need the single ' and double " to remain if the the value on the left is a number.  I'm assuming this can be done with a negative lookback, but I'm not have much luck.  Here is a sample string.

Question by:WH_Tech
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LVL 75

Accepted Solution

käµfm³d   👽 earned 375 total points
ID: 39989132
Yes, a negative lookback should be what you need:

string result = Regex.Replace(original, "(?<!\\d)['\"]", string.Empty);

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Also, if you'd like an explanation of lookaround, you might take a look at the article I wrote on the subject.

Author Comment

ID: 39989251
I found one exception.  Sometimes there are 2 single quotes instead of a double quote.  How can I replace the sequential single quotes with one double quote?
LVL 35

Assisted Solution

by:Dan Craciun
Dan Craciun earned 125 total points
ID: 39989262
You don't need a regex for that. Just replace '' with ".


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