srcmini本文概述
ASP.NET FileUpload控件提供AllowMultiple属性，以将多个文件上传到服务器。此属性为true或false。
<asp：FileUpload>标记用于创建一个浏览按钮，使我们可以上传文件。让我们创建一个上传多个文件的示例。
ASP.NET上载多个文件的示例
本示例包含以下文件。
// UploadMultipleFilesExample.aspx
<%@ Page Language="C#" AutoEventWireup="true"
CodeBehind="UploadMultipleFilesExample.aspx.cs" Inherits="UploadMultipleExample.UploadMultipleFilesExample" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<h3>Upload Multiple Files</h3>
<asp:FileUpload ID="FileUpload1" runat="server" AllowMultiple="true" />
</div>
<p>
<asp:Button ID="Button1" runat="server" Text="Upload File" OnClick="Button1_Click" />
</p>
</form>
<p>
<asp:Label runat="server" ID="FileUploadStatus"></asp:Label>
</p>
</body>
</html>// UploadMultipleFilesExample.aspx.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace UploadMultipleExample
{
public partial class UploadMultipleFilesExample : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
if ((FileUpload1.PostedFile != null) && (FileUpload1.PostedFile.ContentLength > 0))
{
var count = 0;
foreach (HttpPostedFile uploadedFile in FileUpload1.PostedFiles)
{
string fn = System.IO.Path.GetFileName(uploadedFile.FileName);
string SaveLocation = Server.MapPath("upload") + "\\" + fn;
try
{
uploadedFile.SaveAs(SaveLocation);
count++;
}
catch (Exception ex)
{
FileUploadStatus.Text = "Error: " + ex.Message;
}
}
if (count > 0)
{
FileUploadStatus.Text = count + " files has been uploaded.";
}
}
else
{
FileUploadStatus.Text = "Please select a file to upload.";
}
}
}
}输出：
选择2个文件上传
最初，看到上传文件夹为空。
将文件上传到服务器。
现在，查看上传文件夹。它包含上传的两个文件。
评论前必须登录！
注册