上载资料 [英] Uploaded data
本文介绍了上载资料的处理方法,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
拜托,任何人都知道我如何捕获发送数据时已经发送的内容?我希望以后计算上传速度,剩余时间长短等等,这是我的代码,还是知道更好的方法?非常感谢您:
Hi , Please, anyone know how I can capture what has already been sent when sending data? I hope that later calculate upload speed, the length of time remaining and so, here is my code, or know of a better way? thank you very much :
using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Net;
using System.Collections.Specialized;
using System.Threading;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Windows.Forms;
namespace upload_WithDetails
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
}
private delegate void UpdateProgessCallback(Int64 BytesRead, Int64 TotalBytes);
public void UploadFilesToRemoteUrl(string url, string file, string logpath, NameValueCollection nvc)
{
FileInfo f = new FileInfo("FilePath");
Int64 fileSize = f.Length;
long length = 0;
string boundary = "----------------------------" +
DateTime.Now.Ticks.ToString("x");
HttpWebRequest httpWebRequest2 = (HttpWebRequest)WebRequest.Create(url);
httpWebRequest2.ContentType = "multipart/form-data; boundary=" +
boundary;
httpWebRequest2.Method = "POST";
httpWebRequest2.KeepAlive = true;
httpWebRequest2.Credentials =
System.Net.CredentialCache.DefaultCredentials;
Stream memStream = new System.IO.MemoryStream();
byte[] boundarybytes = System.Text.Encoding.ASCII.GetBytes("\r\n--" +
boundary + "\r\n");
string formdataTemplate = "\r\n--" +/* boundary +*/ "\r\nContent-Disposition: form-data; name=\"{0}\";\r\n\r\n{1}";
foreach (string key in nvc.Keys)
{
string formitem = string.Format(formdataTemplate, key, nvc[key]);
byte[] formitembytes = System.Text.Encoding.UTF8.GetBytes(formitem);
memStream.Write(formitembytes, 0, formitembytes.Length);
}
memStream.Write(boundarybytes, 0, boundarybytes.Length);
string headerTemplate = "Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"\r\n Content-Type: application/octet-stream\r\n\r\n";
string header = string.Format(headerTemplate, "form_upload", file);
byte[] headerbytes = System.Text.Encoding.UTF8.GetBytes(header);
memStream.Write(headerbytes, 0, headerbytes.Length);
FileStream fileStream = new FileStream(file, FileMode.Open,
FileAccess.Read);
byte[] buffer = new byte[2048];
int bytesRead = 0;
while ((bytesRead = fileStream.Read(buffer, 0, buffer.Length)) != 0)
{
memStream.Write(buffer, 0, bytesRead);
}
memStream.Write(boundarybytes, 0, boundarybytes.Length);
fileStream.Close();
httpWebRequest2.ContentLength = memStream.Length;
Stream requestStream = httpWebRequest2.GetRequestStream();
memStream.Position = 0;
byte[] tempBuffer = new byte[memStream.Length];
memStream.Read(tempBuffer, 0, tempBuffer.Length);
memStream.Close();
requestStream.Write(tempBuffer, 0, tempBuffer.Length);
requestStream.Close();
WebResponse webResponse2 = httpWebRequest2.GetResponse();
Stream stream2 = webResponse2.GetResponseStream();
StreamReader reader2 = new StreamReader(stream2);
webResponse2.Close();
httpWebRequest2 = null;
webResponse2 = null;
}
private void button1_Click(object sender, EventArgs e)
{
backgroundWorker1.RunWorkerAsync();
}
NameValueCollection myCol = new NameValueCollection();
string file;
private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
myCol.Add("FileName", "1");
file = "FilePath"; UploadFilesToRemoteUrl("http://up.uloz.to/ul/upload.cgi?tmp_sid=55fb51479a2ab312909cb47756ed3795&user_id=277895&host=uloz.to", file, "FolderPath", myCol);
}
private void backgroundWorker1_RunWorkerCompleted(object sender,RunWorkerCompletedEventArgs e)
{
}
}
}
推荐答案
您的问题是什么?
您是否在询问如何计算上传百分比?
应该是readbytes / fileLength
顺便说一句,您将整个数据写入请求流一次.
What is your problem?
Are you asking on how to calculate the percentage of upload?
it should bereadbytes / fileLength
And by the way, you are writing the whole data in the Request stream once.
requestStream.Write(tempBuffer, 0, tempBuffer.Length);
因此,总请求正文将为您发送一次. :)
So the total request body will be sent once for you. :)
这篇关于上载资料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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