使用非服務端的html標記動態上傳檔案
aspx:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>無標題頁</title>
<script type="text/javascript">
function selectFile(i){
var str="";
if(i>0){
for(var j = 1;j<=i;j++){
if(j!=1){
str=str+"<br/>";
}
str= str+"附件"+j+"<input type='file' name='file"+j+"' id='file"+j+"'/>";
}
}else{
alert("fds");
}
document.getElementById("files").innerHTML = str;
}
function f1(){
alert("fs");
}
</script>
</head>
<body>
<form id="form1" runat="server" method="post" enctype="multipart/form-data">
<div>
<select id="selCount" onchange="javascript:selectFile(this.value)">
<option value="0">0</option>
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
</select>
<br />
<span id="files">
</span>
<asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click" />
</div>
</form>
</body>
</html>
cs:
using System;
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.IO;
public partial class _Default : System.Web.UI.Page
{
private string[] s = { "image/*", "text/plain" };
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
HttpFileCollection files = HttpContext.Current.Request.Files;
for (int i = 0; i < files.Count; i++)
{
HttpPostedFile fs = files[i];
if (fs.FileName != "")
{
bool flag = false;
//Path.GetExtension(fs.FileName).ToLower() 取檔案的字尾名
for (int j = 0; j < s.Length; j++)
{
if (fs.ContentType.Contains(s[j]))
{
flag = true;
break;
}
}
if (flag)
{
if (!System.IO.Directory.Exists(Server.MapPath("~/upload")))
{
Directory.CreateDirectory(Server.MapPath("~/upload"));
}
fs.SaveAs(Server.MapPath("~/upload/" + fs.FileName.Substring(fs.FileName.LastIndexOf('.') + 1)));
}
}
}
}
}