System.Text.RegularExpressions.GroupCollection public class GroupCollection : ICollection, IEnumerable Documentation public int Count { get; } public bool IsReadOnly { get; } public bool IsSynchronized { get; } public Group this[int groupnum] { get; } public Group this[string groupname] { get; } public object SyncRoot { get; } public void CopyTo(Array array, int arrayIndex) public IEnumerator GetEnumerator()