asp.net文本域里而输入多条数据进等查询

private void Button1_Click(object sender, System.EventArgs e)
{
string searchText=TextSearch.Text.Trim();
string searchText2=searchText.Replace("/r/n",",");
string [] split=searchText2.Split(new Char [] { ','});
Response.Write("<table border='1' width='200'>");
foreach(string d in split)
{
if(d!="")
{
Response.Write("<tr><td>");
Response.Write(d);
Response.Write(",");
Response.Write("</td></tr>");
}
}
Response.Write("</table>");

}