Regex- match every thing that is in bracket including newline - regex

Question

script file content is
//{input: x(width),y(height);
//output: z(area);}
function(x,y)
z=x*y
I have to read only these lines. What will be the regular expression for data that is in curly braces
//{input: x(width),y(height);
//output: z(area);}
I tried the following
Dim sr As StreamReader = New StreamReader(scriptpath)
' Dim textToParse As String
Dim scriptText As String
scriptText = sr.ReadToEnd
Dim extractCommentRegex As New Regex("\/\/\{(.*?)\}")
Dim textToParse As Match = extractCommentRegex.Match(scriptText)

Answer 1

Try this
^\/\/\{.*\}
with /m option to make dot match newlines.
Hi, sorry haven't been writing vb for quite a while so did not make the answer clear enough. I've created a console project to test following code:
Dim sr As StreamReader = New StreamReader("d:\script1.txt")
' Dim textToParse As String
Dim scriptText As String
scriptText = sr.ReadToEnd
Dim match = Regex.Match(scriptText, "^\/\/\{.*\}", RegexOptions.Singleline Or RegexOptions.Multiline Or RegexOptions.IgnorePatternWhitespace)
Console.WriteLine(match.Success)
Dim sw As StreamWriter = New StreamWriter("d:\output.txt")
sw.Write(match.Value)
sw.Flush()
sw.Close()
Console.ReadLine()
And I'll get following for output.txt.
//{input: x(width),y(height);
//output: z(area);}
I think you need to provide RegexOptions If you have Windows format LF for the input file. for detail of the issue please see this thread:
.NET Regex dot character matches carriage return?