CODEWITHSUNDEEP
c#copydirectory
Rems
Rems

Reputation: 109

Progressbar during folder copy

I need to display progress while folders are copying (asynchronous).
I'm able to do that with a single file copy, but not with a folder... I just want to display the progress of the overall copy as Windows does.

Here is my code for copying folder:

private void DirectoryCopy(string sourceDirName, string destDirName, bool copySubDirs, CancellationToken cancellationToken)
{
    cancellationToken.ThrowIfCancellationRequested();
    DirectoryInfo dir = new DirectoryInfo(sourceDirName);

    DirectoryInfo[] dirs = dir.GetDirectories();
    // If the destination directory doesn't exist, create it.
    if (!Directory.Exists(destDirName))
    {
        Directory.CreateDirectory(destDirName);
    }

    if (!Directory.Exists(destDirName))
    {
        throw new DirectoryNotFoundException(
            "Source directory does not exist or could not be found: "
            + sourceDirName);
    }

    // Get the files in the directory and copy them to the new location.
    FileInfo[] files = dir.GetFiles();
    foreach (FileInfo file in files)
    {
        string temppath = Path.Combine(destDirName, file.Name);
        file.CopyTo(temppath, false);
    }

    // If copying subdirectories, copy them and their contents to new location.
    if (copySubDirs)
    {
        foreach (DirectoryInfo subdir in dirs)
        {
            string temppath = Path.Combine(destDirName, subdir.Name);
            DirectoryCopy(subdir.FullName, temppath, copySubDirs, cts.Token);
        }
    }
}

Then this is called through a button : 

await Task.Run(() => DirectoryCopy(
    srcFolder, 
    @"\\" + hostname + @"\C$\" + destFolder + @"\", 
    true, 
    cts.Token
));

How can I achieve this?

Tell me if there is not enough information about my issue, I will update my post.

Upvotes: 3

Views: 290

Answers (1)

Anu Viswan
Anu Viswan

Reputation: 18155

You could make use of IProgress interface.

For example,

private async Task DirectoryCopy(string sourceDirName, string destDirName, bool copySubDirs, CancellationToken cancellationToken,IProgress<int> progress)
{
    // Do work
    var percentageProgress = 0;
    // percentageProgress = Calculate percentage
    progress.Report(percentageProgress);
}

And at the client (believe your button click event),

var progressIndicator = new Progress<int>(ShowProgress);
await UploadPicturesAsync(sourceDirName,destDirName,copySubDirs,token,progressIndicator);

Where ShowProgress is defined as

void ShowProgress(int value)
{
// Update UI
}

You can read more on IProgress here and here too

Upvotes: 3

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