在ASP.NET中实现多文件上传

来源：互联网发布：培养高级java工程师编辑：程序博客网时间：2024/05/18 12:00

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="MultiFileUpload.aspx.cs"

ASPX 代码

Inherits="MultiFileUpload" %>

<!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>孟宪会多文件上传测试</title>

  <script type="text/javascript">
    function 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", "deteFile(this)");
      d.setAttribute("value", "移除")
      div.appendChild(d)
      document.getElementById("_container").appendChild(div);
    }

    function deteFile(o) {
      while (o.tagName != "DIV") o = o.parentNode;
      o.parentNode.removeChild(o);
    }
  </script>

</head>
<body>
  <form id="form1" runat="server" method="post" enctype="multipart/form-data">
  <h3>多文件上传</h3>
   用户名：<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
  <div id="_container">
    <input type="file" size="50" name="File" />
  </div>
  <div>
    <input type="button" value="添加文件(Add)" onclick="addFile()" />
  </div>
  <div style="padding:10px 0">
    <asp:Button runat="server" Text="开始上传" ID="UploadButton"
      onclick="UploadButton_Click"></asp:Button>
  </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>
</html>

C# 代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class MultiFileUpload : System.Web.UI.Page
{
    protected void UploadButton_Click(object sender, EventArgs e)
    {
      ///'遍历File表单元素
      HttpFileCollection files = HttpContext.Current.Request.Files;

      /// '状态信息
      System.Text.StringBuilder strMsg = new System.Text.StringBuilder("您输入的用户名是：" + TextBox1.Text + "<br/>");
      strMsg.Append("上传的文件分别是：<hr color='red'/>");
      try
      {
        for (int iFile = 0; iFile < files.Count; iFile++)
        {
          ///'检查文件扩展名字
          HttpPostedFile postedFile = files[iFile];
          string fileName, fileExtension;
          fileName = System.IO.Path.GetFileName(postedFile.FileName);
          if (fileName != "")
          {
            fileExtension = System.IO.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><hr>");
            ///'可根据扩展名字的不同保存到不同的文件夹
            ///注意：可能要修改你的文件夹的匿名写入权限。
            postedFile.SaveAs(System.Web.HttpContext.Current.Request.MapPath("images/") + fileName);
          }
        }
        strStatus.Text = strMsg.ToString();
      }
      catch (System.Exception Ex)
      {
        strStatus.Text = Ex.Message;
      }

    }
}