C#正則表達式提取字符串漢字部分

using System.Text.RegularExpressions;

   

public static string GetChineseWord(string oriText)

{

  string x = @"[\u4E00-\u9FFF]+";

  MatchCollection Matches = Regex.Matches

  (oriText, x, RegexOptions.IgnoreCase);

  StringBuilder sb = new StringBuilder();

  foreach (Match NextMatch in Matches)

  {

   sb.Append(NextMatch.Value);

  }

  return sb.ToString();

}

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