怎样检测中文

Question

string ptn = "[\u4e00-\u9fa5]+|[a-zA-Z\\s]+";
            System.Text.RegularExpressions.Regex reg = new System.Text.RegularExpressions.Regex(ptn);
            string z = "I我IS是Chinese中国人";            foreach (Match m in reg.Matches(z))
            {
                Console.WriteLine(m.Value);
            }你要的不

Answer 1

string str="I我IS是Chinese中国人";
        public static string GetChina(string text)
        {
            string newStr = "";
            foreach (char c in text.ToCharArray())
            {
                if (Regex.IsMatch(c.ToString(), @"^[\u4e00-\u9fa5]+$") == true)
                {
                    newStr = newStr + c.ToString();
                }
            }
            return newStr;
        }
            MessageBox.Show(GetChina(str));

Answer 2

string str=""; 
if (Regex.IsMatch(str, @"^[\u4e00-\u9fa5](\s*[\u4e00-\u9fa5])*$"))
        {        }
        else
        {
            
        }