使用HTML input file批量上传代码,Asp.Net代码库,德仔网

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代码分类
【Asp.Net】使用HTML input file批量上传
作者:Dezai.CN / 发布于2012/11/20/ 594
批量上传
aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="upload.aspx.cs" Inherits="CICI.Web.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 runat="server">
    <title>无标题页</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <input id="FindFile" runat="server" type="file" />
        <asp:ListBox ID="FileList" runat="server" Height="154px" Width="224px"></asp:ListBox>
        
        <asp:Button ID="AddFile" runat="server" OnClick="AddFile_Click" Text="添加文件" />
        <asp:Button ID="RemvFile" runat="server" OnClick="RemvFile_Click" Text="删除" />
        <asp:Button ID="Upload_Server" runat="server" OnClick="Upload_ServerClick" Text="上传" />
        <asp:Label ID="TipInfo" runat="server" Text="Label"></asp:Label>
    
    </div>
    </form>
</body>
</html>


aspx.cs

 using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using SZY.Common;

namespace CICI.Web
{
    public partial class upload : System.Web.UI.Page
    {
        static public ArrayList f_list = new ArrayList(); // 保存文件列表
        public int uploadcount = 0; // 上传文件的数量
        protected void Page_Load(object sender, EventArgs e)
        {

        }


        /// <summary>
        /// 将要上传的文件添加到listbox中
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>

        protected void AddFile_Click(object sender, EventArgs e)
        {
            if (Page.IsPostBack == true)
            {
                bool fileok = false;
                String[] allowedExtensions =  { "image/gif", "image/pjpeg", "image/png" };//允许上传的文件类型             
                for (int i = 0; i < allowedExtensions.Length; i++)
                {
                    if (FindFile.PostedFile.ContentType.Contains(allowedExtensions[i]))
                    {
                        fileok = true;
                    }
                }
                if (fileok)
                {
                    for (int i = 0; i < FileList.Items.Count; i++)
                    {
                        if (FileList.Items[i].Text.Contains(FindFile.PostedFile.FileName))
                        {
                            MessageBox.Show(this, "列表已经存在该文件");
                            return;
                        }
                    }
                    f_list.Add(FindFile);
                    FileList.Items.Add(FindFile.PostedFile.FileName);  
                }
            }
            else
            { }

        }

        /// <summary>
        /// 从listbox中删除指定的文件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void RemvFile_Click(object sender, EventArgs e)
        {
            if (FileList.SelectedIndex == -1)
            {
                TipInfo.Text = "错误 - 必须指定要删除的文件.";
                return;
            }
            else if (FileList.Items.Count != 0)
            {
                f_list.RemoveAt(FileList.SelectedIndex);
                FileList.Items.Remove(FileList.SelectedItem.Text);
                TipInfo.Text = "";
            }

        }

        /// <summary>
        /// 循环上传listbox中的文件到指定的文件夹下
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        public void Upload_ServerClick(object sender, System.EventArgs e)
        {
            string baseLocation = Server.MapPath("UploadFiles/"); // 上传路径   
            string status = "";  // 上传成功后显示的文件列表       

            if ((FileList.Items.Count == 0) && (uploadcount == 0))
            {
                TipInfo.Text = "错误 - 必须指定要上传的文件.";
                return;
            }
            else
            {
                foreach (System.Web.UI.HtmlControls.HtmlInputFile F_LIST in f_list)
                {
                    try
                    {
                        string filename = System.IO.Path.GetFileName(F_LIST.PostedFile.FileName);
                        F_LIST.PostedFile.SaveAs(baseLocation + filename);
                        uploadcount++;
                        status += filename + "";
                    }
                    catch (Exception err)
                    {
                        TipInfo.Text = "上传错误 " + baseLocation
                         + "" + err.ToString();
                    }
                }

                if (uploadcount == f_list.Count)
                {
                    TipInfo.Text = "共上传了 " + uploadcount + " 个文件。 " + status;
                }
                f_list.Clear();
                FileList.Items.Clear();
            }

        }

    }
}
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