asp.net读取txt文件内容的代码

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.IO;
namespace test
{
   public partial class Text : System.Web.UI.Page
   {
       protected void Page_Load(object sender, EventArgs e)
       {
           Response.Write(GetInterIDList("asp.txt"));
       }
       //读取txt文件的内容
       public string GetInterIDList(string strfile)
       {
           string strout;
           strout = "";
           if (!File.Exists(System.Web.HttpContext.Current.Server.MapPath(strfile)))
           {
           }
           else
           {
               StreamReader sr = new StreamReader(System.Web.HttpContext.Current.Server.MapPath(strfile), System.Text.Encoding.Default);
               String input = sr.ReadToEnd();
               sr.Close();
               strout = input;
           }
           return strout;
       }
   }
}