asp.net html控件的File控件实现多文件上传实例分享 asp.net多文件上传使用html控件的File控件，在form中就需要加入【 enctype="multipart/form-data"】。 up3.aspx文件代码复制代码代码如下: <%@ Page Language="C#" AutoEventWireup="true" CodeFile="up3.aspx.cs" Inherits="up3" %> up3.aspx.cs文件代码复制代码代码如下: using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; using System.IO; public partial class up3 : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { } protected void Button1_Click(object sender, EventArgs e) { string upPath = "/up/"; //上传文件路径 int upLength = 5; //上传文件大小 string upFileExtName = "|bmp|jpg|jpeg|png|gif|"; HttpFileCollection _files = System.Web.HttpContext.Current.Request.Files; int flag = _files.Count; int flagN = 0; int flagE = 0; int flagEE = 0; string flagEEstr = ""; for (int i = 0; i < _files.Count; i++) { string name = _files[i].FileName; FileInfo fi = new FileInfo(name); string oldfilename = fi.Name; string scExtension = fi.Extension.ToLower(); string fileName = DateTime.Now.ToString("yyyyMMddhhmmssfff") + fi.Extension; // 文件名称，当前时间（yyyyMMddhhmmssfff） string webFilePath = Server.MapPath(upPath) + fileName; // 服务器端文件路径 if (upFileExtName.IndexOf(scExtension.Replace(".", "")) == -1) { flagEE = flagEE + 1; flagEEstr = flagEEstr + "第" + (i + 1) + "个文件，文件名[" + oldfilename + "]，文件类型不符合！"; continue; } if ((fi.Length / (1024 * 1024)) > upLength) { flagEE = flagEE + 1; flagEEstr = flagEEstr + "第" + (i + 1) + "个文件，文件名[" + oldfilename + "]，超出" + upLength + "M大小限制！"; continue; } try { _files[i].SaveAs(webFilePath); } catch (Exception ex) { flagEE = flagEE + 1; flagEEstr = flagEEstr + "第" + (i + 1) + "个文件，上传异常【"+ex.Message+"】"; } } Label1.Text = "总文件【" + flag + "】，上传成功文件【" + flagN + "】，异常文件【" + (flagE + flagEE) + "】【" + flagEEstr + "】"; } }