[RESOLVED] [2005] Regular Expression Pattern for double quotation mark

[zhshqzyc]

Hello,

I want to match a string embedded in double quotation marks.
For ex.

He is "Best Friend" of my family.

I am going to get

Best Friend

Could you look at my pattern?

(?<q>["']).*?\k<q>

Right or not?

Thanks

[.paul.]

Dim rx As New Regex("(?<="").+(?="")")

[zhshqzyc]

Yes.
It works out. So how to grab the context within the quotation?

[.paul.]

Dim testStr As String = "He is ""Best Friend"" of my family."
Dim rx As New Regex("(?<="").+(?="")")
MsgBox(rx.Match(testStr).Value)

[zhshqzyc]

It doesn't work for some cases.
For ex.

Dim rx As New Regex("(?<="").+(?="")")

Expected should be

(?<=

).+(?=

)

But use your pattern, I get

(?<="").+(?="")

[.paul.]

the regex is made up of 3 parts:

look behind (?<=stringtofind)

actual characters to find .+ (= 1 or more of any character)

look ahead (?=stringtofind)


if it doesn't work post your text that contains the string you're trying to extract.

[zhshqzyc]

Dim pattern As String
        pattern = "(?<q>["]).*?\k<q> "

I am using this pattern but I am not sure how to handle the double quote in vb.net.
Get an syntax error.

[.paul.]

i don't know. i've never seen regex used that way before. the regex i posted returns the text between the quotes.

[.paul.]

ok heres how you do it:

"(?<q>[""]).*?\k<q>"

will return:

"Best Friend"

whereas:

"(?<="").+?(?="")"

will return:

Best Friend