ASP.NET实现大文件上传功能

需要下载NeatUpload插件

上传页面：

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="index.aspx.cs" Inherits="_Default" %>

<%@ Register Assembly="Brettle.Web.NeatUpload" Namespace="Brettle.Web.NeatUpload"
  TagPrefix="Upload" %>





  
   
  
  
  


  

后台源码：

protected void BtnUP_Click(object sender, EventArgs e)
  {
    if (AttachFile.HasFile)
    {
      string FileName = this.AttachFile.FileName;//获取上传文件的文件名,包括后缀
      string ExtenName = System.IO.Path.GetExtension(FileName);//获取扩展名
      string SaveFileName = System.IO.Path.Combine(System.Web.HttpContext.Current.Request.MapPath("UpLoads/"), DateTime.Now.ToLongDateString().ToString() + "-" + FileName);//合并两个路径为上传到服务器上的全路径
      AttachFile.MoveTo(SaveFileName, Brettle.Web.NeatUpload.MoveToOptions.Overwrite);
      string url = "UpLoads/" + DateTime.Now.ToString("yyyyMMddhhmmss") + ExtenName; //文件保存的路径
      float FileSize = (float)System.Math.Round((float)AttachFile.ContentLength / 1024000, 1); //获取文件大小并保留小数点后一位,单位是M
      Response.Write("");
    }
    else
    {
      Response.Write("");
    }
  }

这里直接获取上传文件夹文件名称提供下载

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Down.aspx.cs" Inherits="Down" %>




  
  
  
  
  
  
    .div_style ul li
    {
list-style-type: decimal;
border-bottom:1px dashed #E3E3E3;
margin-bottom:5px;
    }
    .div_style ul li a
    {
      text-decoration: none;
      cursor: pointer;
      font-size: 16px;
    }
  


  



//下面是后台代码
public FileInfo[] files { set; get; }
protected void Page_Load(object sender, EventArgs e)
{
string dirPath = HttpContext.Current.Server.MapPath("~/UpLoads");
if (Directory.Exists(dirPath))
{
DirectoryInfo dir = new DirectoryInfo(dirPath);
files = dir.GetFiles("*.*");
}
if (files.Length == 0) { Label1.Text = "暂无文件"; }
}

 

//这是新建另一个页面提供下载的代码

if (Request.QueryString["1"] != null)
{


string _filename = Request.QueryString["1"].ToString(), _filepath = System.IO.Path.Combine(MapPath("~/UpLoads"), _filename);
if (System.IO.File.Exists(_filepath))
{
Response.Clear();
Response.Buffer = true;

Response.AddHeader("Content-Disposition", "attachment;filename=" + _filename);
Response.ContentType = "application/unknow";
Response.TransmitFile(_filepath);
Response.End();
}
}

 

//这是新建另一个页面提供删除操作（后台）

string _filename = Request.QueryString["1"].ToString(), _filepath = System.IO.Path.Combine(MapPath("~/UpLoads"), _filename);
if (System.IO.File.Exists(_filepath))
{
File.Delete(_filepath);
Response.Write("");
//Response.Redirect("Down.aspx");
}

以上就是本文的全部内容，希望对大家的学习有所帮助。