Question

execute()功能与按下按钮相关联。它第一次被按下 - 一切都按照应该的方式运行/ 第二次被按下（在应用程序的同一执行中;如果我关闭并重新打开它工作正常） - 在DeleteAsync行我得到这个例外：

发生了'System.UnauthorizedAccessException'类型的异常   mscorlib.ni.dll但未在用户代码中处理

其他信息：访问被拒绝。（HRESULT的例外情况：   0x80070005（E_ACCESSDENIED））

我认为某些东西比它应该保持更长时间，因此错误。但我不确定究竟是什么导致了它。如果有人能从下面的代码中看到可能发生的事情，我将非常感激：

private async void execute(string url)
{
    StorageFolder filesFolder = null;
    StorageFolder localFolder = Windows.Storage.ApplicationData.Current.LocalFolder;

    if (await localFolder.TryGetItemAsync(DIRECTORY_NAME) != null)
    {
        filesFolder = await localFolder.GetFolderAsync(DIRECTORY_NAME);
        await filesFolder.DeleteAsync(StorageDeleteOption.PermanentDelete); // << THIS IS THE EXCEPTION LINE
    }

    if (await localFolder.TryGetItemAsync(DIRECTORY_NAME) == null)
    {
        await Task.Run(() => {
                repository.Clone(url, DIRECTORY_NAME);
            });
    }

    // This won't be called until task above finished running
    filesFolder = await localFolder.GetFolderAsync(DIRECTORY_NAME);
    IEnumerable<StorageFile> files = await filesFolder.GetFilesAsync();
    addFiles(files);
}

克隆功能：

void Repository::Clone(Platform::String^ url, Platform::String^ path)
{
    OutputDebugString(L"Clone ");
    OutputDebugString(url->Data());
    OutputDebugString(L" into ");
    char temp[1024];
    GetLocalPath(path, temp, 1024);
    OutputDebugStringA(temp);
    OutputDebugString(L"\n");

    char urlt[1024];
    wcstombs(urlt, url->Data(), 1024);

    git_clone_options clone_opts = GIT_CLONE_OPTIONS_INIT;
    git_checkout_options checkout_opts = GIT_CHECKOUT_OPTIONS_INIT;

    // Set up options
    checkout_opts.checkout_strategy = GIT_CHECKOUT_SAFE;
    checkout_opts.progress_cb = on_checkout_progress;
    clone_opts.checkout_opts = checkout_opts;
    clone_opts.fetch_opts.callbacks.sideband_progress = on_sideband_progress;
    clone_opts.fetch_opts.callbacks.transfer_progress = on_fetch_transfer_progress;
    clone_opts.fetch_opts.callbacks.credentials = on_credentials_required;
    clone_opts.fetch_opts.callbacks.payload = this->native;

    // Start the cloning
    report_error(git_clone(&repo, urlt, temp, &clone_opts));
}

使用C＃/ UWP访问被拒绝的异常

0 个答案: