downdocument.aspx.cs

oa办公系统

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;
using System.IO;
public partial class DownDocument : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (Session["uname"].ToString() != null)
        {
            if (!IsPostBack)
            {
                bandfile();
            }
        }
    }
    private void bandfile()
    { 
        file f=new file();
        this.downfile.DataSource = f.select_file(Convert.ToInt32(Session["uname"]));
        this.downfile.DataBind();
    }
    protected void downf_Command(object sender, CommandEventArgs e)
    {
        int df_id = Convert.ToInt32(e.CommandArgument.ToString());
        file f = new file();
        SqlDataReader dr=f.downfileInfo(df_id);
        try
        {
            if (dr.Read())
            {
                string fname = dr["df_name"].ToString();
                //string DownloadfullName = "~/UploadFile/" + fname;
                //string filepath = Server.MapPath(DownloadfullName);
                string filepath = Server.MapPath("UploadFile\\" + fname);
               // string filename = Path.GetFileName(filepath);//获取文件名
                FileInfo files = new FileInfo(filepath);
                Response.Clear();
                Response.ContentType = "application/octet-stream";
                Response.AddHeader("Content-Disposition", "attachment; filename=" + HttpUtility.UrlEncode(fname, System.Text.Encoding.UTF8));
                Response.AddHeader("Content-length", files.Length.ToString());
                Response.Flush();
                Response.WriteFile(filepath);
            }
        }
        catch
        {
            Response.Write("<script>alert('没有找到下载的源文件')</script>");
        }
    }
    protected void downfile_PageIndexChanging(object sender, GridViewPageEventArgs e)
    {
        this.downfile.PageIndex = e.NewPageIndex;
        bandfile();
    }
}