How Do I...Use Regular Expressions to make replacements?
The Regular Expressions library can often ease the time it takes to generate
string replacement functions. By specifying a pattern of strings to be replaced,
you do not have to search for every possible variation of a string. Once a
Regex object that matches every possible string to be replaced is created,
the Replace method can be used to generate a result. The Replace
method can be most easily used by passing in the source string and the
replacement string. The Replace method will return the results as a String.
Dim digitregex As Regex = new Regex("(?<digit>[0-9])")
Dim Before As String = "Here is so4848me te88xt with emb4493edded numbers."
...
Dim After As String = DigitRegex.Replace(Before, "")
VB
You can also reuse the matched string in the replacement. In the previous snippet
we have a named capture of ?<digit>. This named capture
can be reused in the replacement string as ${digit}.
Note that ordinal captures can be used as well, $123,
which would evaluate to 123 captures in our pattern.
This example illustrates how to use the Replace method of Regex to
remove all digits from the input string.
Example
VB RegexReplace.exe
Microsoft .NET Framework SDK QuickStart Tutorials Version 2.0
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