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/// <summary>  
/// ÏÔʾMatchÄÚ¶à¸öGroupµÄÀý×Ó  
/// </summary>  
public void ShowStructure()  
{  
    //ҪƥÅäµÄ×Ö·û´®  
    string text = "1A 2B 3C 4D 5E 6F 7G 8H 9I 10J 11Q 12J 13K 14L 15M 16N ffee80 #800080";  
    //ÕýÔò±í´ïʽ  
    string pattern = @"((\d+)([a-z]))\s+";  
    //ʹÓÃRegexOptions.IgnoreCaseö¾ÙÖµ±íʾ²»Çø·Ö´óСд  
    Regex r = new Regex(pattern, RegexOptions.IgnoreCase);  
    //ʹÓÃÕýÔò±í´ïʽƥÅä×Ö·û´®£¬½ö·µ»ØÒ»´ÎÆ¥Åä½á¹û  
    Match m = r.Match(text);  
    while (m.Success)  
    {  
        //ÏÔʾƥÅ俪ʼ´¦µÄË÷ÒýÖµºÍÆ¥Åäµ½µÄÖµ  
        System.Console.WriteLine("Match=[" + m + "]");  
        CaptureCollection cc = m.Captures;  
        foreach (Capture c in cc)  
        {  
            Console.WriteLine("\tCapture=[" + c + "]");  
        }  
        for (int i = 0; i < m.Groups.Count; i++)  
        {  
            Group


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