在 asp 中的按钮单击上上传文件

Upload a file on Button click in asp

本文关键字：文件 单击 按钮 asp      更新时间：2023-09-26

我正在使用WinCE OS开发经典ASP。我想从 WinCE 上传文件并保存在本地计算机中。请分享文件上传所需的 JScript 函数，我可以将其放在包含文件中。谢谢。

更好的方法是使用任何JavaScript库，如jQuery。

以下是文件上传示例。

http://pixelcone.com/jquery/ajax-file-upload-script/

如何异步上传文件？

干杯:)

我没有关于asp classic的信息，但我使用了 Asp.net，您可以使用asp接收文件，以便从wince上传文件，使用可以使用C#开发应用程序，这是一个示例。

其客户端WinCE应用代码函数上传（字符串路径，字符串文件名）将文件路径和文件名作为输入，并将其发布到网页

#region Upload
public bool Upload(string FilePath, string FileName)
{
string Url = "HTTP://test.mtsonweb.com/fileupload.ashx"; //  Change it to your page name
string BytesConfirmedReceived = "";
int BytesSent = 0;
bool Ret = false;
ASCIIEncoding encoding = new ASCIIEncoding();
try
{
if (File.Exists(FilePath +"''"+ FileName) == false) { return true; }
//FileInfo oInfo = new FileInfo(FilePath + "''" + FileName);
//BytesSent = Convert.ToInt32(oInfo.Length.ToString());
Url += "?myfile=" + FileName.Trim();
FileStream fr = new FileStream(FilePath + "''" + FileName, FileMode.Open);
BinaryReader r = new BinaryReader(fr);
byte[] FileContents = r.ReadBytes((int)fr.Length);
BytesSent = FileContents.Length;
r.Close();
fr.Close();
WebRequest oRequest = WebRequest.Create(Url);
oRequest.Method = "POST";
oRequest.Timeout = 15000;
oRequest.ContentLength = FileContents.Length;
Stream oStream = oRequest.GetRequestStream();
BinaryWriter oWriter = new BinaryWriter(oStream);
oWriter.Write(FileContents);
oWriter.Close();
oStream.Close();
WebResponse oResponse = oRequest.GetResponse();
BytesConfirmedReceived = new StreamReader(oResponse.GetResponseStream(),
Encoding.Default).ReadToEnd();
oResponse.Close();
if (BytesSent.ToString() == BytesConfirmedReceived.Trim())
{
Ret = true;
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
return Ret;
}
#endregion

现在你的页面，你可以处理使用脚本上传的文件，你可以随心所欲，我已经使用了 asp.net c#作为后端，下面是页面的来源：

<%@ WebHandler Language="C#" Class="FileUpload" %>
using System;
using System.Xml;
using System.Data;
using System.Web;
using System.IO;
using System.Text;
using System.Runtime.InteropServices;
using System.Drawing;
public class FileUpload : IHttpHandler
{
public void ProcessRequest(HttpContext oContext)
{
int BytesSent = 0;
//string LocalPath = @"C:'Inetpub'wwwroot'";
string MyFile = "";

try
{
MyFile = oContext.Request["myfile"].ToString().Trim();
MyFile = HttpContext.Current.Server.MapPath("~/Demo/Files/" +
ASCIIEncoding encoding = new ASCIIEncoding();
BytesSent = oContext.Request.TotalBytes;
Class1 obj = Class1.GetInstance();
obj.FileName = MyFile;
obj.FileLength = BytesSent;
byte[] InComingBinaryArray =
oContext.Request.BinaryRead(oContext.Request.TotalBytes);
obj.Data = InComingBinaryArray;
if (File.Exists(MyFile) == true)
{
File.Delete(MyFile);
}
FileStream fs = new FileStream(MyFile, FileMode.CreateNew);
BinaryWriter w = new BinaryWriter(fs);
w.Write(InComingBinaryArray);
w.Close();
fs.Close();
FileInfo oInfo = new FileInfo(MyFile);
long a = (long)BytesSent;
oContext.Response.Write(oInfo.Length.ToString());
}
catch (Exception err) { oContext.Response.Write(err.Message); }
}
public bool IsReusable { get { return true; } }
}
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