无法从服务器下载我的所有文件

Question

当我尝试从服务器下载文件时，它可以正常工作，但文件不完整。我加入一些图片，只看一下每个文件的大小。

我在这里错过了什么吗？

  

下载（＆＃34; * // XXX / upv /＆＃34;，＆＃34; loader.swf＆＃34;）;

     

下载（＆＃34; *：// XXX / upv / modules /＆＃34;，＆＃34; modules / core.swf＆＃34;）;

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Net;
using System.IO;
using System.ComponentModel;

namespace WpfApp1
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();

            btnPlay.IsEnabled = false; 

            if (VerifyVersion())
                btnPlay.IsEnabled = true;
            else

            Download("http://localhost/upv/", "loader.swf");
            Download("http://localhost/upv/modules/", "modules/core.swf"); 

        }

        private void btnPlay_Click(object sender, RoutedEventArgs e)
        {
            System.Diagnostics.Process.Start("Game.exe");
        }

        private void ProgressBar_ValueChanged(object sender, RoutedPropertyChangedEventArgs<double> e)
        {

        }

        private string VersionActuelle;

                private bool VerifyVersion()
        {
            StreamReader VersionReader = new StreamReader("upv/version.txt");
            string VersionClient = VersionReader.ReadToEnd();

            VersionClient = VersionClient.Replace(System.Environment.NewLine, string.Empty);

            VersionActuelle = ReadRemoteTextFile("http://localhost/upv/version.txt");

            VersionActuelle = VersionActuelle.Replace(System.Environment.NewLine, string.Empty);

            if (VersionActuelle == VersionClient)
                return true;
            else
                return false;
        }

        private string ReadRemoteTextFile(string Url)
        {
            Uri uri = new Uri(Url); 

            WebRequest wRequest = WebRequest.Create(uri); 

            WebResponse wResponse = wRequest.GetResponse(); 

            Stream ResponseStream = wResponse.GetResponseStream(); 

            StreamReader sReader = new StreamReader(ResponseStream); 

            string Temp = sReader.ReadToEnd();

            return Temp;
        }

        private void Download(string Url, string DownloadTo)
        {
            WebClient wClient = new WebClient(); 


            wClient.DownloadProgressChanged += new DownloadProgressChangedEventHandler(UpdateProgressChange);  


            wClient.DownloadFileCompleted += new System.ComponentModel.AsyncCompletedEventHandler(UpdateDone); 


            wClient.DownloadFileAsync(new Uri(Url), DownloadTo); 


        }

        private void UpdateProgressChange(object sender, DownloadProgressChangedEventArgs e)
        {
            progressBar.Value = e.ProgressPercentage; 
        }

        private void UpdateDone(object sender, System.ComponentModel.AsyncCompletedEventArgs e)
        {
            //MessageBox.Show("Mise à jour terminée! Vous pouvez désormais jouer.", "Notification");
            btnPlay.IsEnabled = true;

            File.Delete("upv/version.txt");

            using(System.IO.TextWriter sWriter = File.CreateText("upv/version.txt"))
            {
                sWriter.Write(VersionActuelle);
            }
        }
    }
}

Answer 1

这就是我所看到的：

• 下载正在运行异步，因此您可以显示进度
• 下载从Window的构造函数开始（在UI加载之前）
• 下载可能会在准备好接收更新之前尝试更新进度条
• 尝试更新未初始化的进度指示器，停止下载时，Web客户端的线程可能会崩溃。

尝试将Download()调用移至Window Loaded事件。您可能还需要在调度Dispatcher时包装progressBar.Value = e.ProgressPercentage行，以确保它在UI线程上运行。见Using the C# Dispatcher

Answer 2

您指定了文件夹的名称而不是文件：

Download("http://localhost/upv/", "loader.swf");

请改为尝试：

Download("http://localhost/upv/loader.swf", "loader.swf");