The
Replace method of
System.Text.RegularExpressions.Regex class explained here
http://msdn.microsoft.com/en-US/library/taz3ak2f%28v=vs.80%29[
^] can be used for this purpose using the pattern
(?<=foobar\s*=\s*)([^=.]+)(?=\s*\.) which matches a word if it is preceded by
foobar= and followed by
. even when there is white space between foobar & =, = & the required word, required word & . This pattern can be tested here
http://regexhero.net/tester/[
^].
To replace other combinations use variables for
foobar and the
replace string.
Dim fileText as String = System.IO.File.ReadAllText(fileName)
Dim modifiedText as String = System.Text.RegularExpressions.Regex.Replace( _
fileText,"(?<=foobar\s*=\s*)([^=.]+)(?=\s*\.)","5000", RegexOptions.IgnoreCase | RegexOptions.CultureInvariant)
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