netQT/User_index.aspx.cs

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using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;


public partial class netQT_User_index : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            Repeater1.DataSource = new DBExec().getView("select * from T_daima");
            Repeater1.DataBind();
        }

        if (Request.QueryString["id"] != "")
        {
            downLoadFile(Convert.ToInt32(Request.QueryString["id"]));
        }
       
    }
    private void downLoadFile(int id)
    {
        string path, filename;
        SqlDataReader dr = new DBExec().execSqlQry("select DM_Name,DM_url from T_daima where ID='" + id + "'");
        if (dr.HasRows)
        {
            dr.Read();
            filename = dr.GetValue(0).ToString();
            path = dr.GetValue(1).ToString();
            Response.Clear();
            Response.Charset = "utf-8";
            Response.Buffer = true;
            Response.ContentEncoding = System.Text.Encoding.UTF8;
            Response.AppendHeader("Content-Disposition", "attachment;filename=" + Server.UrlEncode(path.Substring(7, path.Length - 7)));
            Response.ContentType = "application/unknown";
            //Response.WriteFile(path);
            Response.Flush();
            Response.Close();
            Response.End();
        }
        //else
        //{
        //    Response.Write("对不起，你下载的文件已不存在！");
        //}
    }
}