c#多檔案上傳簡單實現
阿新 • • 發佈：2019-02-09
實現效果：前端實現自定義多檔案上傳。
此處需要注意的是form標籤裡面新增屬性（enctype="multipart/form-data"）因為比較簡單廢話不說，直接上程式碼。
前端頁面：
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="uploadfiles.aspx.cs" Inherits="Web.uploadfiles" %> <!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></title> <script src="Scripts/jquery.js" type="text/javascript"></script> <script type="text/javascript"> function Add() { $("#btnImg").before("<br /><input type=\"file\" name=\"imgUp\" /> "); } </script> </head> <body> <form id="form1" runat="server" enctype="multipart/form-data"> <div id="imgDiv"> <input type="file" name="imgUp" /> <input id="btnImg" type="button" value="新增圖片" onclick="Add();" /> </div> <asp:Button ID="Button1" runat="server" Text="上傳圖片" OnClick="Button1_Click" /> </form> </body> </html>
後端cs程式碼：
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; namespace Web { public partial class uploadfiles : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { } protected void Button1_Click(object sender, EventArgs e) { HttpFileCollection collection = Request.Files; for (int i = 0; i < collection.Count; i++) { HttpPostedFile postFile = collection[i]; string fileName = postFile.FileName; fileName = fileName.Substring(fileName.LastIndexOf('\\') + 1); postFile.SaveAs(Server.MapPath("~/files/" + fileName)); } } } }