解决方案:
前段代码:
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="MultiFileUpload.aspx.cs" Inherits="WebApplication1.MultiFileUpload1" %> <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> <title>ASP.NET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>
后端代码:
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; namespace WebApplication1 { public partial class MultiFileUpload1 : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { } 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; } } } }
最终效果:
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时间: 2024-10-29 19:07:43