asp.net页面上传附件（可以任意添加多个上传控件）和下载附件（下载附件要是从数据库里面读取的）
asp.net页面上传附件（可以任意添加多个上传控件）下载附件（下载附件要是从数据库里面读取的）
请帮我一下．．．谢了．．．
(刚才一个问题马上就搞定了．．希望这个问题也能有人帮我一下．．在这里先谢了) --------------------编程问答-------------------- 帮顶学习，在给我点分把 --------------------编程问答-------------------- 呵呵．．．谢了．．
--------------------编程问答-------------------- 这里要新增加一个表
上传：把文件传到服务器，同时要写入数据库一条记录
下载：从数据库读出 --------------------编程问答-------------------- IDKey nvarchar 64
ObjectiveType nvarchar 100
ObjectiveID nvarchar 64
AttachAddr nvarchar 225
AttachName nvarchar 255
UploadTime datetime 8
AttachSize bigint 8
DateOfExpire datetime 8
OrderID bigint 8
vTP timestamp 8
我的表结构差不多是这样的 --------------------编程问答-------------------- 上传：
private void AddAttachment()
{
if(Session[(string)ViewState["AttachmentDataTableName"]]==null)
{
((PageBase)Page).RedirectToDefaultErrorPage("SessionTimeOut","Session[tblAttachment]");
}
DataTable tblAttachment=(DataTable)Session[(string)ViewState["AttachmentDataTableName"]];
try
{
//string absolutepath=Request.PhysicalApplicationPath;
//string path =Path.Combine(absolutepath,ConfigurationSettings.AppSettings["SavefilePath"]);
//string path = Common.CEncryptDecrypt.Decrypt3DES(ConfigurationSettings.AppSettings["SavefilePath"],_sStrKey);
string path = ConfigurationSettings.AppSettings["SavefilePath"];
string IDKey=System.Guid.NewGuid().ToString();
string subFolderName=ModuleID+"/"+DateTime.Now.ToString("yyyyMMddHHmmssfff").Substring(0,6);
path=Path.Combine(path,subFolderName);
//old file name
string oldFileName= Path.GetFileName(uplTheFile.PostedFile.FileName);
//extension name
string extension=Path.GetExtension(uplTheFile.PostedFile.FileName);
string newFileName=IDKey+extension;
if(!Directory.Exists(path))
{
Directory.CreateDirectory (path);
}
if(this.uplTheFile.PostedFile !=null && this.uplTheFile.PostedFile.FileName !=null && this.uplTheFile.PostedFile.FileName.Length>0)
{
uplTheFile.PostedFile.SaveAs(Path.Combine(path,newFileName));
DataRow dr=tblAttachment.NewRow ();
dr["IDKey"]=IDKey;
//dr["ModuleID"]=ModuleID;
dr["AttachName"]=oldFileName;
dr["ObjectiveType"]=this.ModuleID;
dr["ObjectiveID"]=InfoID.Trim();
//dr["AttachAddr"]=path;
dr["AttachAddr"]=subFolderName;
dr["UploadTime"]=System.DateTime.Now;
dr["AttachSize"]=uplTheFile.PostedFile.ContentLength;
if(this.DateEditor1.Value == null||this.DateEditor1.Value.Length==0)
{
}
else
{
dr["DateOfExpire"]=this.DateEditor1.Value;
}
tblAttachment.Rows.Add (dr);
this.BindAttachmentList() ;
this.DateEditor1.Value = "";
}
}
catch(Exception exp)
{
this.DisplayError(exp.Message);
return;
}
} --------------------编程问答-------------------- 能不能写的详细一点啊．．．．谢了 --------------------编程问答-------------------- 呵呵 我也做这个 好愁啊 --------------------编程问答-------------------- 实现ASP.NET中FileUpload多文件上传
这里附加一下上易做图个文件的CS代码：
protected void upload_Click(object sender, EventArgs e)
{
if (upfile.HasFile)
{
string fname = upfile.PostedFile.FileName;
int fi = fname.LastIndexOf("//") + 1;
string filename = fname.Substring(fi);
upfile.PostedFile.SaveAs(Server.MapPath("upload//" + filename));
Response.Write("<script>alert('报名表上传成功！');</script>");
}
else
{
Response.Write("<script>alert('请选择您要上传的报名表！');</script>");
}
}
下面是上传多个文件的全部代码，第一次实现这样的功能，难免有考虑不周全的地方，还望高手见到后指教！
【显示页面代码】：
在<head></head>标签中插入如下脚本代码：
<script type="text/javascript">
function addfile()
{
var uploadfiles=document.getElementById("uploadfiles"),str = '<INPUT type="file" size="50" NAME="File">';
uploadfiles.innerHTML+=str;
}
</script>
在页面主体部分插入：
<div>
<p id="uploadfiles"><input type="file" size="50" name="file"></p>
<input onclick="addfile()" type="button" value="增加">
<asp:button id="uploadbutton" Text="开始上传" Runat="server"></asp:button>
</div>
【C#代码】：
添加using指令：using System.Text.RegularExpressions;
在protected void Page_Load(object sender, EventArgs e){}中插入如下代码：
HttpFileCollection files = HttpContext.Current.Request.Files;
//状态信息
System.Text.StringBuilder strMsg = new System.Text.StringBuilder();
for (int ifile = 0; ifile < files.Count; ifile++)
{
HttpPostedFile postedfile = files[ifile];
string filename, fileExt;
filename = System.IO.Path.GetFileName(postedfile.FileName); //获取文件名
fileExt = System.IO.Path.GetExtension(filename); //获取文件后缀
int MaxAllowUploadFileSize = Convert.ToInt32(System.Configuration.ConfigurationSettings.AppSettings["MaxAllowUploadFileSize"]); //定义允许上传文件大小
if (MaxAllowUploadFileSize == 0) { MaxAllowUploadFileSize = 26500; }
string allowexts = System.Configuration.ConfigurationSettings.AppSettings["AllowUploadFileType"]; //定义允许上传文件类型
if (allowexts == "") { allowexts = "doc|docx|rar|xls|xlsx|txt"; }
Regex allowext = new Regex(allowexts);
if (postedfile.ContentLength < MaxAllowUploadFileSize && allowext.IsMatch(fileExt)) //检查文件大小及扩展名
{
postedfile.SaveAs(Server.MapPath("upload//" + filename + fileExt)); //upload为与本页面同一目录，可自行修改
}
else
{
Response.Write("<script>alert('不允许上传类型" + fileExt + "或文件过大')</script>");
}
}
【Web.config中代码】：
<appSettings>
<add key="MaxAllowUploadFileSize" value="256000" />
<add key="AllowUploadFileType" value="doc|docx|rar|xls|xlsx|txt" />
</appSettings>
--------------------编程问答-------------------- 刚好我做过了 等下贴 --------------------编程问答-------------------- aspx页面
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="UpLoad.aspx.cs" Inherits="Asiastar.NR.FileOperation.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 id="Head1" runat="server">
<title>上传文件</title>
<link href="../CSS/common.css" rel="stylesheet" type="text/css" />
<link href="../CSS/table.all.css" rel="stylesheet" type="text/css" />
<link href="../CSS/ret_style.css" rel="stylesheet" type="text/css" />
<link href="../CSS/dtree.css" rel="stylesheet" type="text/css" />
<script src="../js/jquery-1.3.2.js" type="text/javascript"></script>
<script src="../js/jquery-1.3.2-vsdoc2.js" type="text/javascript"></script>
<script src="../js/jquery-1.3.2.min.js" type="text/javascript"></script>
<link href="../CSS/Table.css" rel="stylesheet" type="text/css" />
<style type="text/css">
#Decription {
width: 350px;
}
</style>
</head>
<body>
<form id="form1" runat="server" method="post" enctype="multipart/form-data">
<input id="method" type="hidden" name="method" />
<input id="Hidden1" type="hidden" name="FunName" />
<input id="decrition" type="text" value="资源说明" onfocus="cls()" onblur="res()" runat="server"
name="decrition" /><br />
<div id="_container">
<input type="file" size="50" name="File" id="file" />
<input id="Button1" type="button" value="上传" onclick="test()" size="50" /></div>
<div>
<input type="button" value="添加文件" onclick="FN_addFile()" style="width: 93px; height: 23px" />
</div>
<div style="padding: 10px 0">
</div>
<div>
<asp:Label ID="strStatus" runat="server" Font-Names="宋体" Font-Bold="True" Font-Size="9pt"
Width="500px" BorderStyle="None" BorderColor="White"></asp:Label>
</div>
</form>
</body>
<script type="text/javascript">
function FN_addFile() {
var div = document.createElement("div");
var f = document.createElement("input");
f.setAttribute("type", "file")
f.setAttribute("name", "File")
f.setAttribute("size", "50")
div.appendChild(f)
var d = document.createElement("input");
d.setAttribute("type", "button")
d.setAttribute("onclick", "FN_deteFile(this)");
d.setAttribute("value", "移除")
div.appendChild(d)
document.getElementById("_container").appendChild(div);
}
function FN_deteFile(o) {
while (o.tagName != "DIV")o = o.parentNode;
o.parentNode.removeChild(o);
}
function cls(){
//捕获触发事件的对象，并设置为以下语句的默认对象
with(event.srcElement)
//如果当前值为默认值，则清空
if(value==defaultValue) value=""
}
function res(){
//捕获触发事件的对象，并设置为以下语句的默认对象
with(event.srcElement)
//如果当前值为空，则重置为默认值
if(value=="") value=defaultValue
}
function test()
{
document.getElementById("method").value = "Upload";
form1.submit();
}
function FN_AjaxUpload()
{
$.ajax({
type:"post",//请求方式
url:"../ajax/AjaxUploadFiles.ashx",//载入页面的URL地址
data:{decrition:$("#decrition").val()},
success:function(data){//返回成功的函数
if(data =="1"){
alert('上传成功');
}else if(data =="0")
{
alert('文件已经存在!');
}else
{alert('上传失败');}
}
});
}
</script>
</html>
--------------------编程问答-------------------- .cs页面
using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Text;
using System.IO;
using Asiastar.NRModel;
using Asiastar.NRBLL;
namespace Asiastar.NR.FileOperation
{
public partial class UpLoad : System.Web.UI.Page
{
public string method = "";
protected void Page_Load(object sender, EventArgs e)
{
if (Session["username"] == null)
{
Response.Redirect("../Login/Login.aspx");
}
method = Request.Form["method"];
if (!string.IsNullOrEmpty(method) && method.Equals("Upload"))
{
FN_UpFiles();
}
}
//上传文件
public void FN_UpFiles()
{
//遍历File表单元素
HttpFileCollection files = HttpContext.Current.Request.Files;
//StringBuilder strMsg = new StringBuilder();
//strMsg.Append("上传的文件分别是：<hr color='pink'/>");
try
{
for (int iFile = 0 ; iFile < files.Count ; iFile++)
{
//检查文件扩展名字
HttpPostedFile postedFile = files[iFile];
string fileName = "";
//string fileExtension = "";
fileName = Path.GetFileName(postedFile.FileName);
if (fileName != "")
{
try
{
string strpath = HttpContext.Current.Request.MapPath("~/ResourcesFolder/") + fileName;
if (System.IO.File.Exists(strpath))
{
Response.Write("已经存在文件：" + fileName + "<br>");
}
else
{
try
{
NRModel.File model = new NRModel.File();
NRBLL.File bf = new NRBLL.File();
Guid guid1 = Guid.NewGuid();
Guid guid2 = Guid.NewGuid();
Guid guid3 = Guid.NewGuid();
Guid guid4 = Guid.NewGuid();
model.Fileid = guid1;
model.Folderid = guid2;
model.Filepath = strpath;
model.FileNam = fileName.ToString();
model.FileSize = postedFile.ContentLength;
model.Decription = this.decrition.Value;
model.CreateOn = DateTime.Now;
model.CreateBy = guid3;
model.ModefyBy = guid4;
if (bf.FN_AddNewRes(model) > 0)
{
//fileExtension = Path.GetExtension(fileName);
//strMsg.Append("上传的文件类型：" + postedFile.ContentType.ToString() + "<br>");
//strMsg.Append("客户端文件地址：" + postedFile.FileName + "<br>");
//strMsg.Append("上传文件的文件名：" + fileName + "<br>");
//strMsg.Append("上传文件的扩展名：" + fileExtension + "<br>");
//strMsg.Append("上传文件的大小：" + postedFile.ContentLength.ToString() + "个字节" + "<br>");
postedFile.SaveAs(System.Web.HttpContext.Current.Request.MapPath("~/ResourcesFolder/") + fileName);
Page.RegisterStartupScript("提示", "<script language='javascript'>alert('上传成功!')</script>");
Response.Write("<script language='javascript'>self.opener.location.reload();</script>");
Response.Write("<script language='javascript'>window.close();</script>");
}
}
catch (Exception ex)
{
NR.Error.ErrHandler.WriteError(ex.ToString());
}
}
}
catch (Exception ex)
{
NR.Error.ErrHandler.WriteError(ex.ToString());
}
}
else
{
throw new Exception("上传出错");
}
}
//strStatus.Text = strMsg.ToString();
}
catch (System.Exception ex)
{
NR.Error.ErrHandler.WriteError(ex.ToString());
}
}
//public void CreateEventLog(string FilePath, string EventMessage)
//{
// try
// {
// StringBuilder strTemp = new StringBuilder();
// string CreateFileName = FilePath + "\\ " + DateTime.Now.ToString("yyyyMMddhhmmss ") + ".txt ";
// //***创建一个文件
// FileInfo mFileInfo = new FileInfo(CreateFileName);
// StreamWriter sw = mFileInfo.AppendText();
// sw.Write(EventMessage);
// //***关闭写入文件流
// sw.Close();
// }
// catch (Exception ex)
// {
// CreateEventLog(@"c:", ex.ToString());
// }
//}
}
}
补充：.NET技术 , ASP.NET
