文件的上传与下载
动态添加上次按钮：
前台：
<head runat="server">
<title>文件上传按钮的动态添加与删除</title>
<script src="Scripts/jquery-1.4.1-vsdoc.js" type="text/javascript"></script>
<script src="Scripts/jquery-1.4.1.js" type="text/javascript"></script>
<script type="text/javascript">
$(function () {
$("#addfile").click(function () {
$("#files").append($("<div class='file'><input type='file' name='file' />  <input type='button' name='delete' value='删除' /></div>"));
//删除
$("#files").find("input[name='delete']").each(function (i) {
$(this).click(function () {
$(this).parent("div[class='file']").remove();
});
});
});
});
</script>
</head>
<body>
<form id="form1" runat="server" enctype="multipart/form-data">
<div>
<div id="files">
</div>
<br />
<br />
<br />
<div>
<input type="button" id="addfile" value="新增附件" />  <asp:Button
ID="btnUp" runat="server" Text="提交" OnClick="btnUp_Click" />
</div>
</div>
</form>
</body>
后台：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace FileLoad
{
public partial class FileUpload2p : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void btnUp_Click(object sender, EventArgs e)
{
int num = Request.Files.Count;
for (int i = 0; i < Request.Files.Count; i++)
{
if (!string.IsNullOrEmpty(Request.Files[i].FileName))
{
//Request.Files[i].SaveAs("D:\\" + Request.Files[i].FileName.Substring(Request.Files[i].FileName.LastIndexOf("\\") + 1));
//Request.Files[i].SaveAs("E:\\" + Request.Files[i].FileName.Substring(Request.Files[i].FileName.LastIndexOf("\\") + 1));
Request.Files[i].SaveAs("D:\\" + Request.Files[i].FileName);
}
}
}
}
}
