无法取消Zip文件创建：使用ZipFile.CreateFromDirectory ?? [英] Can't cancel Zip file creation: Using ZipFile.CreateFromDirectory ??

问题描述

 tokenSourceZip = new CancellationTokenSource（）; 
 var token = tokenSourceZip.Token; 
 try 
 {
 await Task.Run（（）=> 
 {
 
 try 
 {
 string path = $" {zipFolder.Path} \\ {srcFolder.Name} _ {Guid.NewGuid（）}。zip"; 
 ZipFile.CreateFromDirectory（srcFolder.Path，path，
 CompressionLevel.Fastest ，true）; 
 System.Diagnostics.Debug.WriteLine（" folder zipped"）; 
 
} 
 catch（例外e2）
 {
 System.Diagnostics.Debug.WriteLine（e2.Message）; 
} 
}，令牌）; 
} 
 catch（AggregateException ex）
 {
 System.Diagnostics.Debug.WriteLine（" Task aborted"）; 
 System.Diagnostics.Debug.WriteLine（" Exception messages："）; 
 foreach（var在ex.InnerExceptions中）
 System.Diagnostics.Debug.WriteLine（" {0}：{1}"，ie.GetType（）。Name，ie.Message）; 
} 
最后
 {
 //tokenSourceFolders.Dispose（）; 
} 
 

尝试在使用 

ZipFile.CreateFromDirectory。

我已将其设置为上述等待任务。

但是当我通过令牌取消时，任务继续。

鉴于要压缩的文件夹很深（实际上在删除之前备份）我需要能够异步取消操作。

取消行动是：

 if（tokenSourceZip！= null）
 {
 if（ ！tokenSourceZip.IsCancellationRequested）
 if（tokenSourceZip.Token！= null）
 if（tokenSourceZip.Token.CanBeCanceled）
 tokenSourceZip.Cancel（）; 
} 

任何想法？

Thx

---

嵌入式MVP

解决方案

嗨大卫琼斯

如果这个同步
方法正在运行，似乎无法取消Zipfile.CreateFromDirectory进程，

但我有一个解决方法在这里，您可以尝试延迟ZipFile.CreateFromDirectory
方法一段时间，在此期间，取消工作。

您可以参考以下代码：

 await Task.Delay（10000）; 
 tokenSourceZip.Token.ThrowIfCancellationRequested（）; 
 ZipFile.CreateFromDirectory（zipFolder.Path，path，
 CompressionLevel.Fastest，true）; 

您可以根据需要设置延迟时间。因此，如果您需要取消任务，您可以有时间决定
。

< p style ="margin-bottom：0.0001pt; line-height：normal">

最好的问候，

罗伊

              tokenSourceZip = new CancellationTokenSource();
                var token = tokenSourceZip.Token;
                try
                {
                    await Task.Run(() =>
                   {

                       try
                       {
                           string path = $"{zipFolder.Path}\\{srcFolder.Name}_{Guid.NewGuid()}.zip";
                            ZipFile.CreateFromDirectory(srcFolder.Path, path,
                                CompressionLevel.Fastest, true);
                            System.Diagnostics.Debug.WriteLine("folder zipped");
  
                       }
                       catch (Exception e2)
                       {
                           System.Diagnostics.Debug.WriteLine(e2.Message);
                       }
                   }, token);
                }
                catch (AggregateException ex)
                {
                    System.Diagnostics.Debug.WriteLine("Task aborted");
                    System.Diagnostics.Debug.WriteLine("Exception messages:");
                    foreach (var ie in ex.InnerExceptions)
                        System.Diagnostics.Debug.WriteLine("   {0}: {1}", ie.GetType().Name, ie.Message);
                }
                finally
                {
                    //tokenSourceFolders.Dispose();
                }
            

Trying to enable cancellation of a Zip file creation when using 

ZipFile.CreateFromDirectory.
I have set it to run as an awaited task as above.

But when I cancel via the token the task continues.

Given that the folders to be zipped are deep (actually backing up before some deletions) I need to be able to asynchronously cancel the action.

Cancellation is action by:

            if (tokenSourceZip != null)
            {
                if (!tokenSourceZip.IsCancellationRequested)
                    if (tokenSourceZip.Token != null)
                    if (tokenSourceZip.Token.CanBeCanceled)
                        tokenSourceZip.Cancel();
            }

Any ideas?

Thx

---

Embedded MVP

解决方案

Hi David Jones

It seems not possible to cancel the Zipfile.CreateFromDirectory process if this synchronous method is running,

But I have a workaround here, you could try to delay the ZipFile.CreateFromDirectory method for some time, and during this time, the cancellation works.

You could refer the following code:

                        await Task.Delay(10000);
                        tokenSourceZip.Token.ThrowIfCancellationRequested();
                        ZipFile.CreateFromDirectory(zipFolder.Path, path,
                            CompressionLevel.Fastest, true);

You could set the delay time as you want. So you could have a time for you to decide if you need to cancel the task.

Best regards,

Roy

这篇关于无法取消Zip文件创建：使用ZipFile.CreateFromDirectory ??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！