今天BOSS要求做一個批量上傳檔案的功能，忙活了半天，總算搞定，希望前輩們多加指點，下面來看一下（這裡是簡化版，只介紹了主要實現過程，沒有美化，勿怪！勿怪！）：
單擊添加檔案，將自動添加FileUpload控制項。
單擊瀏覽分別選擇要上傳的多個檔案
單擊上傳檔案，完成檔案的上傳。
好了不多說，下面是代碼：
前台Default.aspx代碼
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %><!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>批量上傳檔案</title></head><body> <form id="form1" runat="server"> <div style="width:300px; margin:50px auto;"> <asp:Label ID="LblMessage" runat="server" Width="300px" ForeColor="#FF0033" Font-Bold="True" Font-Size="Small" /> <table border="1" bordercolor="gray" style="border-collapse: collapse;"> <tr> <td style="text-align: center; font-size:10pt; font-weight:bold; color:DimGray;"> 批量上傳檔案 </td> </tr> <tr> <td> <asp:Panel ID="Pan_UpFile" runat="server" Height="200px" ScrollBars="Auto" Width="250px"> <table id="Tab_UpDownFile" runat="server" cellpadding="0" cellspacing="0" enableviewstate="true"> <tr> <td style="width: 100px; height: 30px"> <asp:FileUpload ID="FileUpload1" runat="server"/> </td> </tr> </table> </asp:Panel> </td> </tr> <tr> <td> <asp:Button ID="BtnAdd" runat="server" Text="添加檔案" OnClick="BtnAdd_Click" BorderColor="Gray" BorderWidth="1px" /> <asp:Button ID="BtnUpFile" runat="server" OnClick="BtnUpFile_Click" Text="上傳檔案" BorderColor="Gray" BorderWidth="1px" /> </td> </tr> </table> </div> </form></body></html>
Default.aspx.cs代碼（注釋有一定說明，都能看懂吧？）
using System;using System.Data;using System.Configuration;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 System.Collections;//引入命名空間public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { if (!Page.IsPostBack)//首次執行頁面 { SFUPC(); } } #region 該方法用於將當前頁面上傳檔案控制項集儲存到Session中 private void SFUPC() { ArrayList AL = new ArrayList();//動態增加數組 foreach (Control C in Tab_UpDownFile.Controls) { //在表格中尋找出FileUpload控制項添加到ArrayList中 if (C.GetType().ToString() == "System.Web.UI.HtmlControls.HtmlTableRow") { HtmlTableCell HTC = (HtmlTableCell)C.Controls[0]; foreach (Control FUC in HTC.Controls) { if (FUC.GetType().ToString() == "System.Web.UI.WebControls.FileUpload") { FileUpload FU = (FileUpload)FUC; //設定FileUpload的樣式 FU.BorderColor = System.Drawing.Color.DimGray; FU.BorderWidth = 1; //添加FileUpload控制項 AL.Add(FU); } } } } //把ArrayList添加到Session中 Session.Add("FilesControls", AL); } #endregion #region 該方法用於添加一個上傳檔案的控制項 private void InsertC() { //執行個體化ArrayList ArrayList AL = new ArrayList(); this.Tab_UpDownFile.Rows.Clear(); //清除id為F表格裡的所有行 GetInfo(); //表示 HtmlTable 控制項中的 <tr> HTML 元素 HtmlTableRow HTR = new HtmlTableRow(); //表示 HtmlTableRow 對象中的 <td> 和 <th> HTML 元素 HtmlTableCell HTC = new HtmlTableCell(); //在儲存格中添加一個FileUpload控制項 HTC.Controls.Add(new FileUpload()); //在行中添加儲存格 HTR.Controls.Add(HTC); //在表中添加行 Tab_UpDownFile.Rows.Add(HTR); SFUPC(); } #endregion #region 該方法用於將儲存在Session中的上傳檔案控制項集添加到表格中 private void GetInfo() { ArrayList AL = new ArrayList(); if (Session["FilesControls"] != null) { AL = (ArrayList)Session["FilesControls"]; for (int i = 0; i < AL.Count; i++) { HtmlTableRow HTR = new HtmlTableRow(); HtmlTableCell HTC = new HtmlTableCell(); HTC.Controls.Add((System.Web.UI.WebControls.FileUpload)AL[i]); HTR.Controls.Add(HTC); Tab_UpDownFile.Rows.Add(HTR); } } } #endregion #region 該方法用於執行檔案上傳操作 private void UpFile() { //擷取檔案夾路徑 string FilePath = Server.MapPath("./") + "File"; // 擷取用戶端上傳檔案的集合 HttpFileCollection HFC = Request.Files; for (int i = 0; i < HFC.Count; i++) { //訪問指定的檔案 HttpPostedFile UserHPF = HFC[i]; try { //判斷檔案是否為空白 if (UserHPF.ContentLength > 0) { //將上傳的檔案儲存體在指定目錄下 UserHPF.SaveAs(FilePath + "\\" + System.IO.Path.GetFileName(UserHPF.FileName)); } } catch { LblMessage.Text = "上傳失敗！"; } } if (Session["FilesControls"] != null) { Session.Remove("FilesControls"); } LblMessage.Text = "上傳成功！"; } #endregion #region 調用InsertC方法，實現添加FileUpLoad控制項的功能 protected void BtnAdd_Click(object sender, EventArgs e) { InsertC();//執行添加控制項方法 LblMessage.Text = ""; } #endregion #region 實現檔案上傳的功能 protected void BtnUpFile_Click(object sender, EventArgs e) { if (this.FileUpload1.PostedFile.FileName != "") { UpFile();//執行上傳檔案 SFUPC(); } else { LblMessage.Text = "對不起，上傳檔案為空白，請選擇上傳檔案！"; } } #endregion}
完！
請讀者根據實際情況做適當修改！
Start building with 50+ products and up to 12 months usage for Elastic Compute Service
1 on 1 presale consultation
24/7 Technical Support 6 Free Tickets per Quarter Faster Response
Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.
A comprehensive suite of global cloud computing services to power your business
Payment Methods We Support
