C# in a Nutshell, Second Edition

Name

GroupCollection

Synopsis

This class is a collection of the captured groups in a regular expression. A GroupCollection is indexed by either a string with the name of the capture group, or with an integer number of the capture group as determined in the regular expression (give a name to a capture group by putting ?<name> immediately after the opening parenthesis). So, Match.Groups["name"] would retrieve a capture from the subexpression (?<name>expr), and Match.Groups[1] would be the result from the first explicitly grouped subexpression. The entire regular expression is the zero-indexed group (an expression without any groupings is treated as a single group). A GroupCollection is returned by Match.Groups.

public class GroupCollection : ICollection, IEnumerable {
// Public Instance Properties
   public int Count{get; }
// implements ICollection
   public bool IsReadOnly{get; }
   public bool IsSynchronized{get; }     
// implements ICollection
   public object SyncRoot{get; }         
// implements ICollection
   public Group this[string groupname]{get; }
   public Group this[int groupnum]{get; }
// Public Instance Methods
   public void CopyTo(Array array, int arrayIndex);  
// implements ICollection
   public IEnumerator GetEnumerator( );   
// implements IEnumerable
}

Returned By

Match.Groups