asp.net实现大文件上传

时间：2022-12-25 10:55:19

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">

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

<head runat="server">

    <title></title>

     <link href="easyui/themes/default/easyui.css" rel="stylesheet" type="text/css" />

    <link href="easyui/themes/icon.css" rel="stylesheet" type="text/css" />

    <script src="easyui/jquery.min.js" type="text/javascript"></script>

    <script src="easyui/jquery.easyui.min.js" type="text/javascript"></script>

</head>

<body>

    <form id="form1" runat="server">

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

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

        </Upload:ProgressBar>

      <br />

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

    <br />

    <br />

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

    <a href="Down.aspx">查看下载</a>

    </div>

    </form>

</body>

</html>

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 / , ); //获取文件大小并保留小数点后一位,单位是M

            Response.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">

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

<head runat="server">

    <title></title>

    <link href="easyui/themes/default/easyui.css" rel="stylesheet" type="text/css" />

    <link href="easyui/themes/icon.css" rel="stylesheet" type="text/css" />

    <script src="easyui/jquery.min.js" type="text/javascript"></script>

    <script src="easyui/jquery.easyui.min.js" type="text/javascript"></script>

    <style type="text/css">

        .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;

        }

    </style>

</head>

<body>

    <form id="form1" runat="server">

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

    <a href="index.aspx">上传文件</a>

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

        <ul  id="www_zzjs_net">

            <%if (files.Length == ) { Label1.Text = "暂无文件"; }

              else

              {

                  foreach (System.IO.FileInfo item in files)

                  {%>

            <li><a href="Default2.aspx?1=<%=item%>">

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

            </li>

            <% }

          }%>

        </ul>

    </div>

    <div id="changpage"></div>

    <%--js分页--%>

<%--<script language="javascript">

    var obj, j;

    var page = ;

    var nowPage = ; //当前页

    var listNum = ; //每页显示<ul>数

    var PagesLen; //总页数

    var PageNum = ; //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()

    }

    function upPage(p) {

        nowPage = p

        //内容变换

        for (var i = ; i < j; i++) {

            obj[i].style.display = "none"

        }

        for (var i = p * listNum; i < (p + ) * 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>  '

        var PageNum_2 = PageNum %  ==  ? Math.ceil(PageNum / ) +  : Math.ceil(PageNum / )

        var PageNum_3 = PageNum %  ==  ? Math.ceil(PageNum / ) : Math.ceil(PageNum / ) +

        var strC = "", startPage, endPage;

        if (PageNum >= PagesLen) { startPage = ; endPage = PagesLen -  }

        else if (nowPage < PageNum_2) { startPage = ; endPage = PagesLen -  > PageNum ? PageNum : PagesLen -  } //首页

        else { startPage = nowPage + PageNum_3 >= PagesLen ? PagesLen - PageNum -  : nowPage - PageNum_2 + ; var t = startPage + PageNum; endPage = t > PagesLen ? PagesLen -  : t }

        for (var i = startPage; i <= endPage; i++) {

            if (i == nowPage) strC += '<a href="###" style="color:red;font-weight:700;" onclick="upPage(' + i + ')">' + (i + ) + '</a> '

            else strC += '<a href="###" onclick="upPage(' + i + ')">' + (i + ) + '</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 - ) + ')">尾页</a>  '

        strE2 = nowPage +  + "/" + 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");
}

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