ASP.NET实现大文件上传功能
需要下载NeatUpload插件
上传页面：
<%@PageLanguage="C#"AutoEventWireup="true"CodeFile="index.aspx.cs"Inherits="_Default"%> <%@RegisterAssembly="Brettle.Web.NeatUpload"Namespace="Brettle.Web.NeatUpload" TagPrefix="Upload"%> <!DOCTYPEhtmlPUBLIC"-//W3C//DTDXHTML1.0Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <htmlxmlns="http://www.w3.org/1999/xhtml"> <headrunat="server"> <title></title> <linkhref="easyui/themes/default/easyui.css"rel="stylesheet"type="text/css"/> <linkhref="easyui/themes/icon.css"rel="stylesheet"type="text/css"/> <scriptsrc="easyui/jquery.min.js"type="text/javascript"></script> <scriptsrc="easyui/jquery.easyui.min.js"type="text/javascript"></script> </head> <body> <formid="form1"runat="server"> <divclass="easyui-panel"style="padding:5px;"> <Upload:ProgressBarID="ProgressBar1"runat='server'> </Upload:ProgressBar> <br/> <Upload:InputFileID="AttachFile"runat="server"/> <br/> <br/> <asp:LinkButtonID="BtnUP"runat="server"class="easyui-linkbutton"data-options="iconCls:'icon-add'"onclick="BtnUP_Click">上传</asp:LinkButton><br/><br/> <ahref="Down.aspx">查看下载</a> </div> </form> </body> </html>
后台源码：
protectedvoidBtnUP_Click(objectsender,EventArgse)
{
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
<%@PageLanguage="C#"AutoEventWireup="true"CodeFile="Down.aspx.cs"Inherits="Down"%>
<!DOCTYPEhtmlPUBLIC"-//W3C//DTDXHTML1.0Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<htmlxmlns="http://www.w3.org/1999/xhtml">
<headrunat="server">
<title></title>
<linkhref="easyui/themes/default/easyui.css"rel="stylesheet"type="text/css"/>
<linkhref="easyui/themes/icon.css"rel="stylesheet"type="text/css"/>
<scriptsrc="easyui/jquery.min.js"type="text/javascript"></script>
<scriptsrc="easyui/jquery.easyui.min.js"type="text/javascript"></script>
<styletype="text/css">
.div_styleulli
{
list-style-type:decimal;
border-bottom:1pxdashed#E3E3E3;
margin-bottom:5px;
}
.div_styleullia
{
text-decoration:none;
cursor:pointer;
font-size:16px;
}
</style>
</head>
<body>
<formid="form1"runat="server">
<divclass="div_styleeasyui-panel"style="padding:5px;">
<ahref="index.aspx">上传文件</a>
<asp:LabelID="Label1"runat="server"Text=""></asp:Label>
<ulid="www_zzjs_net">
<%if(files.Length==0){Label1.Text="暂无文件";}
else
{
foreach(System.IO.FileInfoiteminfiles)
{%>
<li><ahref="Default2.aspx?1=<%=item%>">
<%=item%></a> <ahref="delete.aspx?1=<%=item%>"onclick="javascript:returnconfirm('确定删除吗？');">删除附件</a>
</li>
<%}
}%>
</ul>
</div>
<divid="changpage"></div>
<%--js分页--%>
<%--<scriptlanguage="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)
}
functionupPage(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='<ahref="###"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)+1
varstrC="",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+='<ahref="###"style="color:red;font-weight:700;"onclick="upPage('+i+')">'+(i+1)+'</a>'
elsestrC+='<ahref="###"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='<ahref="###"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
publicFileInfo[]files{set;get;}
protectedvoidPage_Load(objectsender,EventArgse)
{
stringdirPath=HttpContext.Current.Server.MapPath("~/UpLoads");
if(Directory.Exists(dirPath))
{
DirectoryInfodir=newDirectoryInfo(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("<scriptlanguage=javascript>alert('删除成功！');window.location='Down.aspx';</script>");
//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。