转摘——仿网易126网络硬盘上传

前台代码：

<! DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" >
< html  xmlns ="http://www.w3.org/1999/xhtml" >
< head >
< meta  http-equiv ="Content-Type"  content ="text/html; charset=gb2312"   />
< title > 仿网易126网络硬盘上传 by littlelam </ title >
</ head >
< script >
//css样式以及部分代码源自126
var TotalFiles = 0;
function AddFiles()
{
    TotalFiles ++;
    var file=document.createElement("input"); 
    file.type = "file";
    file.id = "f"+ TotalFiles.toString();
    file.name = "files"+ TotalFiles.toString(); 
    file.hideFocus = true;
    file.size = 1;
    file.style.cssText = "cursor:pointer; width:1px; border:none; height:32px; padding:0px; margin:0px;position:absolute; opacity:0;filter:alpha(opacity=0);left:-32px !important;left:-5px;left/**/:-3px; font-size:20px;";
    file.onchange = function ()
    {
        for (var i=1;i<=TotalFiles;i++)
        {
            if ($("f"+i.toString())&&$("f"+i.toString())!=this)
            {
                if ($("f"+i.toString()).value == this.value)
                {
                    DelFile(this.id.replace("f",""));
                    AddFiles();
                    window.alert("已有相同文件，无须重复上传");
                    return;
                }
                    
            }
                
        }
        $("s"+TotalFiles.toString()).innerHTML = "<table class=oplist_filelist cellSpacing=0 cellPadding=0 width=\"100%\" border=0><tr class=tr_file><td class=td_pathlist>&nbsp;" + $("f"+TotalFiles.toString()).value +  "</td><td class=td_operate noWrap><span onclick=\"DelFile('"+TotalFiles.toString()+"')\" style=\"cursor:pointer;color:red;font-weight:bloder;\">X&nbsp;移除</span></td></tr></table>";
        this.style.display = "none";
        AddFiles();
        CheckUploadDiv();
    };
    $("uploadInput").appendChild(file);
    var div=document.createElement("div"); 
    div.id = "s"+ TotalFiles.toString();
    $("uploadDiv").appendChild(div);

}
function DelFile(str)
{
    $("uploadInput").removeChild($("f"+str));
    $("uploadDiv").removeChild($("s"+str));  
    CheckUploadDiv();
}
function CheckUploadDiv()
{
    $("divNone").style.display = $("uploadDiv").innerHTML.indexOf("移除")==-1?"":"none";
}
function DelEmpty()
{
    for (var i=1;i<=TotalFiles;i++)
    {
        if ($("f"+i.toString()))
        {
            if ($("f"+i.toString()).value == "")
                $("uploadInput").removeChild($("f"+i.toString()));
        }
            
    }
}
function checkForm()
{
    var HaveFile = false;
    for (var i=1;i<=TotalFiles;i++)
    {
        if ($("f"+i.toString()))
        {
            if ($("f"+i.toString()).value != "")
            {
                HaveFile = true;
                break;
            }
        }            
    }
    if (!HaveFile)
    {
        window.alert("点击“添加文件”按钮 添加要上传的文件");    
        return false;
    }    
    $("submitButton").disabled = true;
    DelEmpty();
    return true;
}
function $(id)
{
    return document.getElementById(id);    
}
</ script >
< style >
a.btn{}{background-image:url(http://mimg.163.com/netfolder/images/all_toolbar.gif);display:block; background-position:2px -32px; margin:6px 4px;float:left; border:1px solid #bebebe; cursor:pointer; position:relative;}
.addbtn{}{height:32px;width:100px;}
a.btn:hover{}{background-position:2px -64px; border:1px solid #d2d2d2; background-color:#FFFFEE;}
</ style >
< body >
< FORM  METHOD ="post"  NAME ="form1"  ACTION ="savetofile.aspx"  ENCTYPE ="multipart/form-data"  onSubmit ="return checkForm();" >
< table  width ="100%"  border ="0"  cellspacing ="0"  cellpadding ="0"  class ="twp_all" >
  
     < tr >
       < td >< div  class ="oplist_op_af_inner"  id ="buttonDiv" >< a  href ="javascript:AddFiles();"  class ="btn" >< div  id ="uploadInput"  class ="addbtn" ></ div ></ a >           
         </ div >
         </ td >
     </ tr >
     < tr >
       < td >
         < div  class ="twp_con_div2"  id ="filePanel" >
           < table  width ="100%"  border ="0"  cellspacing ="0"  cellpadding ="0"  class ="oplist_filelist" >
             < tr  class ="tbl_inner_title" >
               < td  class ="td_pathlist" > 文件路径 </ td >
               < td  nowrap class ="td_operate" > 操作 </ td >
             </ tr >
           </ table >           
           < div  id ="uploadDiv" ></ div >
         </ div >
        </ td >
     </ tr >
< script > AddFiles(); </ script >   
   < tr >
     < td  class ="wp_bottom button_bar" >< input  name ="submit"  id ="submitButton"  type ="submit"  value ="开始上传" >
       
      </ td >
   </ tr >
</ table >
</ form >
</ body >
</ html >

后台代码：

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.IO;

namespace  NetDisk
{
    public partial class UpFile : System.Web.UI.Page
    {
        private string Path;
        private string DirectoryName = "";
        protected void Page_Load(object sender, EventArgs e)
        {
            Path = Server.MapPath("~/") + "Lam\\";
            DirectoryName = (Request["txtDirectoryName"] + "").Replace(".", "").Replace("\\", "").Replace("/", "");
            if (!Directory.Exists(Path + DirectoryName + "\\") || DirectoryName.Trim() == "")
                Response.Redirect("FolderList.aspx");
            txtDirectoryName.Value = DirectoryName;
            lDirectoryName.Text = DirectoryName;
            if (Request.Files.Count > 0)
            {
                for (int i = 0; i < Request.Files.Count; i++)
                {
                    if (!System.IO.File.Exists(Path + DirectoryName + "\\" + System.IO.Path.GetFileName(Request.Files[i].FileName)))
                    {
                        Request.Files[i].SaveAs(Path + DirectoryName + "\\" + System.IO.Path.GetFileName(Request.Files[i].FileName));
                    }
                    else
                    {
                        int j = 0;
                        while (System.IO.File.Exists(Path + DirectoryName + "\\" + System.IO.Path.GetFileNameWithoutExtension(Request.Files[i].FileName) + "(" + j.ToString() + ")" + System.IO.Path.GetExtension(Request.Files[i].FileName)))
                            j++;
                        Request.Files[i].SaveAs(Path + DirectoryName + "\\" + System.IO.Path.GetFileNameWithoutExtension(Request.Files[i].FileName) + "(" + j.ToString() + ")" + System.IO.Path.GetExtension(Request.Files[i].FileName));
                    }
                }
                Response.Redirect("FileList.aspx?DirectoryName=" + Server.UrlEncode(DirectoryName), true);
            }
        }
    }
}