String.Compare 能不能夠忽略全形/半形呢

話說 .NET String.Compare 很簡單就可以忽略大小寫...
但沒想到它有權重, 這導致一些問題,
比方說, 全形/半形的權重比英文字母小,
所以全形半形混雜的排序就會如同下面這樣:

abc
ＣＯＡＣＨ
coach
coach2
ＣＯＢＣＨ
cox
ha
za

阿...那我要找 C 開頭的字, 都被全形拆開來啦,
這樣 String.Compare 能不能夠忽略全形/半形呢?

最後, 終於找到 CultureInfo.Compare 可以下 CompareOptions.IgnoreWidth ...
範例碼如下:

   1: class Program

   2:     {

   3:  

   4:         static void Main(string[] args)

   5:         {

   6:             List<string> lst = new List<string>() {

   7:                 "coach", "coach2", "ＣＯＡＣＨ","ＣＯＢＣＨ","cox","ha","abc","za"

   8:             };

   9:  

  10:             lst.Sort((x, y) => CompareStr(x, y));

  11:  

  12:             foreach (string s in lst)

  13:                 Console.WriteLine(s);

  14:  

  15:             Console.WriteLine("-----------");

  16:  

  17:             string f = "c";

  18:             int index = lst.BinarySearch(f, new compare());

  19:             if (index < 0)

  20:             {

  21:                 index = ~index;

  22:                 for (int i = index; i < lst.Count; i++)

  23:                 {

  24:                     if (CompareStr(lst[i],f, f.Length) == 0)

  25:                         Console.WriteLine(lst[i]);

  26:                     else

  27:                         break;

  28:                 }

  29:             }

  30:             Console.ReadLine();

  31:         }

  32:  

  33:         public static int CompareStr(string x, string y)

  34:         {

  35:             return CultureInfo.InvariantCulture.CompareInfo.Compare(x, y, CompareOptions.IgnoreWidth | CompareOptions.IgnoreCase);

  36:         }

  37:  

  38:         public static int CompareStr(string x, string y, int len)

  39:         {

  40:             return CultureInfo.InvariantCulture.CompareInfo.Compare(x, 0, len, y, 0, len, CompareOptions.IgnoreWidth | CompareOptions.IgnoreCase);

  41:         }

  42:     }

  43:  

  44:     class compare : IComparer<string>

  45:     {

  46:  

  47:         #region IComparer<string> 成員

  48:  

  49:         public int Compare(string x, string y)

  50:         {

  51:             return Program.CompareStr(x, y);

  52:         }

  53:  

  54:         #endregion

  55:     }