C# 过滤字符串中的非手机号码，效率高点的

Question

例如:
string content = "13400000001\r\n13400000002\r\n你好\r\n134000000\r\n你好\r\n013400000001\r\n13400000003\r\n13400000004\r\n13440984\r\n13400000005\r\n134000001你好\r\n鸟\r\n134000d0001\r\n13400000006\r\n";有时候字符串可能会比较长，所以求效率比较好的。。
要求过滤之后：
string content = "13400000001\r\n13400000002\r\n13400000001\r\nn13400000003\r\n13400000004\r\n13400000005\r\13400000006";

Answer 1

http://msdn.microsoft.com/zh-cn/library/ae5bf541(v=VS.80).aspx

Answer 2

 string content = "13400000001\r\n13400000002\r\n你好\r\n134000000\r\n你好\r\n013400000001\r\n13400000003\r\n13400000004\r\n13440984\r\n13400000005\r\n134000001你好\r\n鸟\r\n134000d0001\r\n13400000006\r\n";
            string result = null;
            foreach (Match m in Regex.Matches(content, pattern))
            {
                //循环输出
                result += m.Value;
            }
            //13400000001\r\n13400000002\r\n\r\n01340000000\r\n13400000003\r\n13400000004\r\n\r\n13400000005\r\n\r\n13400000006\r\n

Answer 3

楼上的兄弟
pattern是什么？

Answer 4

        private void button1_Click(object sender, EventArgs e)
        {
            string content = "13400000001\r\n13400000002\r\n你好\r\n134000000\r\n你好\r\n013400000001\r\n13400000003\r\n13400000004\r\n13440984\r\n13400000005\r\n134000001你好\r\n鸟\r\n134000d0001\r\n13400000006\r\n";
            string[] spli=new string[]{"\r\n"};
            string[] arr = content.Split(spli, StringSplitOptions.None);
            int j = 0;
            for (int i = 0; i < arr.Length; i++)
            {
                j = System.Text.Encoding.Default.GetByteCount(arr[i]);
                if (j== 11)
                {
                    textBox1.Text += arr[i] + "\r\n";
                }
            }
        }
试试,

Answer 5

感谢 Return_false
搞定了

Answer 6

  string pattern =  @"\s*\d{11}\s*";
            string tempStr = File.ReadAllText(@"C:\Users\dell\Desktop\Test.txt",Encoding.GetEncoding("gb2312"));//读取文档
            string content = "13400000001\r\n13400000002\r\n你好\r\n134000000\r\n你好\r\n013400000001\r\n13400000003\r\n13400000004\r\n13440984\r\n13400000005\r\n134000001你好\r\n鸟\r\n134000d0001\r\n13400000006\r\n";
            string result = null;
            foreach (Match m in Regex.Matches(content, pattern))
            {
                //循环输出
                result += m.Value;
            }
            //13400000001\r\n13400000002\r\n\r\n01340000000\r\n13400000003\r\n13400000004\r\n\r\n13400000005\r\n\r\n13400000006\r\n