regex syntax stop search

Question

How do I make Regex stop the search after "Target This"?

HeaderText="Target This" AnotherAttribute="Getting Picked Up"

This is what i've tried

var match = Regex.Match(string1, @"(?<=HeaderText=\").*(?=\")");

Answer 1

The quantifier * is eager, which means it will consume as many characters as it can while still getting a match. You want the lazy quantifier, *?.

As an aside, rather than using look-around expressions as you have done here, you may find it in general easier to use capturing groups:

var match = Regex.Match(string1, "HeaderText=\"(.*?)\"");
                                               ^   ^ these make a capturing group

Now the match matches the whole thing, but match.Groups[1] is just the value in the quotes.