Complete set: Intro to C - Bill Buchanan

The pattern @ʺ^(.*), Theʺ will match countries such as ʺBahamas, Theʺ. We can extract
the contents of the brackets by looking at structure Match or MatchCollection.
5.11.2 Match
Commonly we are only interested in one set of matches.
If this is the case we can use the Match object. We can get
Extracting substrings
Regex populationPattern = new Regex(@"Population: (\S*)");
while (sr.Peek()>0)
{
string s = sr.ReadLine();
Match m = populationPattern.Match(s);
if (m.Success)
{
MessageBox.Show(m.Groups[1].Value);
}
}
duction to .NET
Intro
5.11.3 MatchCollection
The match collection contains a list of lists. Commonly there is only one item in the
list. This item consists of the whole matching string followed by each of the brackets
in order.
Extracting substrings
Regex re = new Regex(@"^(.*), (The)\t");
StreamReader sr = new StreamReader(@"..\..\ciaTabbed.txt");
while (sr.Peek()>0)
{
string s = sr.ReadLine();
MatchCollection m = re.Matches(s);
if (m.Count>0)
{
Console.WriteLine(s);
Console.WriteLine("item 0,0:" + m[0].Groups[0]);
Console.WriteLine("item 0,1:" + m[0].Groups[1]);
Console.WriteLine("item 0,2:" + m[0].Groups[2]);
}
}
Output extracting substrings
Bahamas, The Central America and the Caribbean 13940 294982 5580000000
item 0,0:Bahamas, The
item 0,1:Bahamas
item 0,2:The
Gambia, The Africa 11300 1367124 1400000000
item 0,0:Gambia, The
item 0,1:Gambia
item 0,2:The
Agilent .NET Course: Module 5, page
10