Question

我有一个例外，我无法找到解决问题的方法。我认为我的整个代码都是有效的c＃。

namespace YoutubeDownloader2Form
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private async void button1_Click(object sender, EventArgs e)
        {
            DownloadUrl DownloadUrl = new DownloadUrl();


            List<Class1> FinalLiast = DownloadUrl.DownloadUrlMethod(textBox1.Text);
            int i = 0;
            foreach (var Urls in FinalLiast)
            {
                string Authorization = Urls.Author;

                IEnumerable<VideoInfo> videoInfos = DownloadUrlResolver.GetDownloadUrls(Urls.Url);

                VideoInfo Video = videoInfos.First(info => info.VideoType == VideoType.Mp4 && info.Resolution == 144);

                if (Video.RequiresDecryption)
                {
                    DownloadUrlResolver.DecryptDownloadUrl(Video);
                }

                string path = Directory.CreateDirectory(@"C:\Youtube\" + Authorization).ToString();
                var videoDownloader = new VideoDownloader(Video,
                    Path.Combine((@"C:\youtube\" + path), Video.Title + Video.VideoExtension));


                StreamWriter dosya = File.AppendText((@"C:\youtube\" + path) + i + ".txt");

                videoDownloader.Execute();
                //Thread.Sleep(60000);
                i++;
            }
        }
    }
}

public class DownloadUrl
{
    public List<Class1> DownloadUrlMethod(string txtboxDeger)
    {

        VideoSearch Items = new VideoSearch();
        List<Class1> ListClass1 = new List<Class1>();

        string searchCount =
            txtboxDeger + "&sp=EgIYAVAU";
        foreach (var Item in Items.SearchQuery(searchCount, 1))
        {
            Class1 Video = new Class1();
            Video.title = Item.Title;
            Video.Author = Item.Author;
            Video.Url = Item.Url;
            IEnumerable<VideoInfo> videos = DownloadUrlResolver.GetDownloadUrls(Video.Url);
            ListClass1.Add(Video);

        }
        return ListClass1;
    }
}

代码适用于三个查询，但我有20个。在3.步骤，它抛出一个异常;这是堆栈跟踪：

at System.RuntimeMethodHandle.InvokeMethod（Object target，Object [] arguments，Signature sig，Boolean constructor） at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal（Object obj，Object [] parameters，Object [] arguments）在System.Delegate.DynamicInvokeImpl（Object [] args）在System.Windows.Forms.Control.InvokeMarshaledCallbackDo（ThreadMethodEntry tme）在System.Windows.Forms.Control.InvokeMarshaledCallbackHelper（Object obj） at System.Threading.ExecutionContext.RunInternal（ExecutionContext executionContext，ContextCallback callback，Object state，Boolean preserveSyncCtx） at System.Threading.ExecutionContext.Run（ExecutionContext executionContext，ContextCallback callback，Object state，Boolean preserveSyncCtx）在System.Threading.ExecutionContext.Run（ExecutionContext executionContext，ContextCallback回调，对象状态）在System.Windows.Forms.Control.InvokeMarshaledCallback（ThreadMethodEntry tme）在System.Windows.Forms.Control.InvokeMarshaledCallbacks（）在System.Windows.Forms.Control.WndProc（消息＆amp; m）在System.Windows.Forms.Control.ControlNativeWindow.OnMessage（Message＆amp; m）在System.Windows.Forms.Control.ControlNativeWindow.WndProc（Message＆amp; m）在System.Windows.Forms.NativeWindow.DebuggableCallback（IntPtr hWnd，Int32 msg，IntPtr wparam，IntPtr lparam）在System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW（MSG＆amp; msg）在System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop（IntPtr dwComponentID，Int32 reason，Int32 pvLoopData）在System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner（Int32 reason，ApplicationContext context）在System.Windows.Forms.Application.ThreadContext.RunMessageLoop（Int32 reason，ApplicationContext context）在System.Windows.Forms.Application.Run（Form mainForm）在C：\ Users \ Ramazan BIYIK \ source \ repos \ YoutubeDownloader2Form \ YoutubeDownloader2Form \ Program.cs中的YoutubeDownloader2Form.Program.Main（）：第26行＆gt;＆gt;

您可以从图片中看到代码抛出的位置。我尝试异步，它也抛出。我检查了InnerException;它说不支持给定路径的格式。但是，它成功下载了前三个视频。它也适用于其他视频。

为什么这段代码会抛出异常？

我按照这些教程编写了这段代码：

https://www.youtube.com/watch?v=kv63n_rfJwk

https://www.youtube.com/watch?v=TnG3urCD_m0

调用的目标引发了异常吗？

0 个答案: