正则表达式,替换所有HTML标签的简单实例

public static string formatString(string str, int size)
    {
      string temp = str;

      Regex regex = new Regex("<.+?>");

      temp = regex.Replace(str, "");

      temp = temp.Replace("\r\n", "");

      temp = temp.Replace("&nbsp;", "");

      if (temp.Length >= size)
      {
        temp = temp.Substring(0, size - 3) + " ";
      }

      return temp;
    }