多个文件上传. [英] Multiple File Upload.
本文介绍了多个文件上传.的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我从
获得了以下多文件上传代码
http://www.asp.net/general/videos/how-do-i-multiple-file-uploads-in-aspnet-2 [
I got the following code of Multiple file upload from
http://www.asp.net/general/videos/how-do-i-multiple-file-uploads-in-aspnet-2[^].
But there is an error in the C# (ie. HttpPostedFile has not assigned properly).
Can anyone correct this. This will be very helpful for me.
//============================================================================
<form id="form1" runat="server" enctype="multipart/form-data">
<p id="upload-area">
<input id="File1" type="file" runat="server" size="60" />
</p>
<input id="AddFile" type="button" value="Add file" onclick="addFileUploadBox()" />
<p><asp:Button ID="btnSubmit" runat="server" Text="Upload Now" OnClick="btnSubmit_Click" /></p>
<span id="Span1" runat="server" />
<script type="text/javascript">
function addFileUploadBox()
{
if (!document.getElementById || !document.createElement)
return false;
var uploadArea = document.getElementById ("upload-area");
if (!uploadArea)
return;
var newLine = document.createElement ("br");
uploadArea.appendChild (newLine);
var newUploadBox = document.createElement ("input");
// Set up the new input for file uploads
newUploadBox.type = "file";
newUploadBox.size = "60";
// The new box needs a name and an ID
if (!addFileUploadBox.lastAssignedId)
addFileUploadBox.lastAssignedId = 100;
newUploadBox.setAttribute ("id", "dynamic" + addFileUploadBox.lastAssignedId);
newUploadBox.setAttribute ("name", "dynamic:" + addFileUploadBox.lastAssignedId);
uploadArea.appendChild (newUploadBox);
addFileUploadBox.lastAssignedId++;
}
</script>
</form>
//================================================ ========================
//==========================================================================
using System;
using System.IO;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
String UpPath;
UpPath = "C:\\UploadedUserFiles";
if (!Directory.Exists(UpPath))
{
Directory.CreateDirectory("C:\\UploadedUserFiles\\");
}
}
protected void btnSubmit_Click(object sender, EventArgs e)
{
HttpFileCollection uploads = HttpContext.Current.Request.Files;
for (int i = 0; i < uploads.Count; i++)
{
HttpPostedFile upload = file;// Here is the Error.....
if (upload.ContentLength == 0)
continue;
string c = System.IO.Path.GetFileName(upload.FileName); // We don't need the path, just the name.
try
{
upload.SaveAs("C:\\UploadedUserFiles\\" + c);
Span1.InnerHtml = "Upload(s) Successful.";
}
catch(Exception Exp)
{
Span1.InnerHtml = "Upload(s) FAILED.";
}
}
}
}
推荐答案
但是file
是什么?您尚未分配或什至没有声明它.请改用以下内容.
But what isfile
? You haven''t assigned or not even declared it. Use following instead.
HttpPostedFile upload = uploads[i];
这篇关于多个文件上传.的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
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