asp.net实现大文件上传

王朝学院·作者佚名 2016-08-28

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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"%>

<!DOCTYPE html PUBLIC"-//W3C//DTD XHTML 1.0 Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<htmlxmlns="http://www.w3.org/1999/xhtml">

<scrip[flash=500,400]http://www.knowsky.com/[/flash]t src="easyui/jquery.min.js"type="text/javascript"[flash=500,400]http://www.knowsky.com/[/flash]></script>

</head>

<body>

<divclass="easyui-panel"style="padding:5px;">

<Upload:ProgressBar ID="ProgressBar1"runat='server'>

</Upload:ProgressBar>

<br />

<Upload:InputFile ID="AttachFile"runat="server"/>

<br />

<asp:LinkButton ID="BtnUP"runat="server"class="easyui-linkbutton"data-options="iconCls:'icon-add'"onclick="BtnUP_Click">上传</asp:LinkButton><br /><br />

</div>

</form>

</body>

</html>

后台源码：

protectedvoidBtnUP_Click(objectsender, EventArgs e)

{if(AttachFile.HasFile)

{stringFileName =this.AttachFile.FileName;//获取上传文件的文件名,包括后缀stringExtenName = System.IO.Path.GetExtension(FileName);//获取扩展名stringSaveFileName = 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);stringurl ="UpLoads/"+ DateTime.Now.ToString("yyyyMMddhhmmss") + ExtenName;//文件保存的路径floatFileSize = (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MResponse.Write("<script>alert('恭喜您，上传成功!')</script>");

}else{

Response.Write("<script>alert('请选择文件！')</script>");

}

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"%>

<!DOCTYPE html PUBLIC"-//W3C//DTD XHTML 1.0 Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

{

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;

}</style>

</head>

<body>

<divclass="div_style easyui-panel"style="padding: 5px;">

<asp:Label ID="Label1"runat="server"Text=""></asp:Label>

<%if(files.Length ==0) { Label1.Text ="暂无文件"; }else{foreach(System.IO.FileInfo iteminfiles)

{%>

<%=item %></a>     <a href="delete.aspx?1=<%=item%>"onclick="javascript:return confirm('确定删除吗？');">删除附件</a>

</li>

<%}

}%>

</ul>

</div>

<%--js分页--%>

<%--<script language="javascript">varobj, j;varpage =0;varnowPage =0;//当前页varlistNum =25;//每页显示<ul>数varPagesLen;//总页数varPageNum =4;//分页链接接数(5个)onload =function () {

obj= document.getElementById("www_zzjs_net").getElementsByTagName("li");

j=obj.length

PagesLen= Math.ceil(j /listNum);

upPage(0)

}

function upPage(p) {

nowPage=p//内容变换for(vari =0; i < j; i++) {

obj[i].style.display="none"}for(vari = p * listNum; i < (p +1) * listNum; i++) {if(obj[i]) obj[i].style.display ="block"}//欢迎来到站长特效网，我们的网址是www.zzjs.net，很好记，zz站长，js就是js特效，本站收集大量高质量js代码，还有许多广告代码下载。//分页链接变换strS ='<a href="###" onclick="upPage(0)">首页</a>'varPageNum_2 = PageNum %2==0? Math.ceil(PageNum /2) +1: Math.ceil(PageNum /2)varPageNum_3 = PageNum %2==0? Math.ceil(PageNum /2) : Math.ceil(PageNum /2) +1varstrC ="", startPage, endPage;if(PageNum >= PagesLen) { startPage =0; endPage = PagesLen -1}elseif(nowPage < PageNum_2) { startPage =0; endPage = PagesLen -1> PageNum ? PageNum : PagesLen -1}//首页else{ startPage = nowPage + PageNum_3 >= PagesLen ? PagesLen - PageNum -1: nowPage - PageNum_2 +1;vart = startPage + PageNum; endPage = t > PagesLen ? PagesLen -1: t }for(vari = startPage; i <= endPage; i++) {if(i == nowPage) strC +='<a href="###" style="color:red;font-weight:700;" onclick="upPage('+ i +')">'+ (i +1) +'</a>'elsestrC +='<a href="###" onclick="upPage('+ i +')">'+ (i +1) +'</a>'}//欢迎来到站长特效网，我们的网址是www.zzjs.net，很好记，zz站长，js就是js特效，本站收集大量高质量js代码，还有许多广告代码下载。strE ='<a href="###" onclick="upPage('+ (PagesLen -1) +')">尾页</a>'strE2= nowPage +1+"/"+ PagesLen +"页"+"共"+ j +"条"document.getElementById("changpage").innerHTML = strS + strC + strE +strE2

}</script>--%>

</form>

</body>

</html>

//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("<script language=javascript>alert('删除成功！');window.location = 'Down.aspx';</script>");

//Response.Redirect("Down.aspx");

}