asp.net中将某字符串切割成阵列并排序列出

protected void Page_Load(object sender, EventArgs e)
{
string s = "a;b;d;z;y;u";
string[] sa = s.Split(';');
Array.Sort(sa); //排序
for (int i = 0; i sa.Length; i++)
{
Response.Write(sa[i].ToString() + "br />");
}
}