CODEWITHSUNDEEP
regexvb.net
Slee
Slee

Reputation: 28248

RegEx to match text and enclosing braces

I need to loop through all the matches in say the following string:

<a href='/Product/Show/{ProductRowID}'>{ProductName}</a>

I am looking to capture the values in the {} including them, so I want {ProductRowID} and {ProductName}

Here is my code so far:

Dim r As Regex = New Regex("{\w*}", RegexOptions.IgnoreCase)
Dim m As Match = r.Match("<a href='/Product/Show/{ProductRowID}'>{ProductName}</a>")

Is my RegEx pattern correct? How do I loop through the matched values? I feel like this should be super easy but I have been stumped on this this morning!

Upvotes: 0

Views: 7628

Answers (3)

RickL
RickL

Reputation: 2821

Change your RegEx pattern to \{\w*\} then it will match as you expect.

You can test it with an online .net RegEx tester.

Upvotes: 1

t3rse
t3rse

Reputation: 10124

You can just group your matches using a regex like the following:

<a href='/Product/Show/(.+)'\>(.+)</a>

In this way you have $1 and $2 matching the values you want to get.

You an also give your matches names so that they aren't anonymous/position oriented for retrieval:

<a href='/Product/Show/(?<rowid>.+)'\>(?<name>.+)</a>

Upvotes: 2

Tomalak
Tomalak

Reputation: 338118

Your Pattern is missing a small detail:

\{\w*?\}

Curly braces must be escaped, and you want the non-greedy star, or your first (and only) match will be this: "{ProductRowID}'>{ProductName}".

Dim r As Regex = New Regex("\{\w*?\}")
Dim input As String = "<a href='/Product/Show/{ProductRowID}'>{ProductName}</a>"
Dim mc As MatchCollection = Regex.Matches(input, r)
For Each m As Match In mc
  MsgBox.Show(m.ToString())
Next m

RegexOptions.IgnoreCase is not needed, because this particular regex is not case sensitive anyway.

Upvotes: 3

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