2009年12月小记(Split,netstat,SortedList)

买家面对面 

瑞雅商城

瑞雅淘宝 

1、string.Split

string str = "abc$$123$4$5";
string[] strs = str.Split(new string[] { "$$" }, StringSplitOptions.RemoveEmptyEntries);
foreach (string s in strs)
{
  Response.Write(s + "<hr />");
}

 2、查看指定端口号连接情况

netstat -abn | find "8800" 

3、SortedList

        SortedList<int, int> list = new SortedList<int, int>(100);
        for (int i = 0; i < 100; i++)
        {
            list.Add(i, i + 1000);
        }
        list.TrimExcess();

        for (int i = 80; i < 120; i++)
        {
            Response.Write(string.Format("InternalID={0}, IndexOfKey={1} <br/>", i, list.IndexOfKey(i)));
            int userid = 0;
            list.TryGetValue(i, out userid);//userid不存在会返回0
            Response.Write(string.Format("InternalID={0}, UserId={1} <br/>", i, userid));
            Response.Write("<hr />");
        }

 

        SortedList<int, int> list = new SortedList<int, int>(100);
        for (int i = 0; i < 100; i++)
        {
            //由小到大排序
            list.Add(Guid.NewGuid().ToString().GetHashCode(), i);
        }
        list.TrimExcess();

        foreach (KeyValuePair<int, int> kv in list)
        {
            Response.Write(string.Format("{0}, {1}", kv.Key, kv .Value));
            Response.Write("<hr />");
        }