上次文件下载后的C＃下载文件

Question

我想用WebClient列出文件下载 但WebClient一次不允许多个动作，这段代码一次调用所有下载，但我希望单独下载文件

modlist.txt

mod1.jar
mod2.jar
mod3.jar
mod4.jar

代码

private void DownloadingFiles()
        {
            if (!File.Exists(dir + "modlist.txt"))
            {
                client.DownloadFileAsync(new Uri(site + "modlist.txt"), dir + "modlist.txt");
            }
        }

        private void DownloadingMods()
        {
            var files = File.ReadAllLines(dir + "modlist.txt");
            foreach (var filename in files)
            {
                if (!File.Exists(dir + "mods/" + filename))
                {

                    client.DownloadFileAsync(new Uri(site + "mods/" + filename), dir + "mods/" + filename);
                }
            }
        }

Answer 1

您应该使用await和async之类的：

private async Task DownloadingFiles()
    {
        if (!File.Exists(dir + "modlist.txt"))
        {
            await client.DownloadFileTaskAsync(new Uri(site + "modlist.txt"), dir + "modlist.txt");
        }
    }

    private async Task DownloadingMods()
    {
        var files = File.ReadAllLines(dir + "modlist.txt");
        foreach (var filename in files)
        {
            if (!File.Exists(dir + "mods/" + filename))
            {

                await client.DownloadFileTaskAsync(new Uri(site + "mods/" + filename), dir + "mods/" + filename);
            }
        }
    }