GetFilesAsync 停止工作答案

【问题标题】：GetFilesAsync stops workingGetFilesAsync 停止工作
【发布时间】：2012-12-18 09:42:35
【问题描述】：

我有这段代码

public static class Storage
{
    public async static Task<bool> Exists(string filename)
    {
        var folder = await Package.Current.InstalledLocation.GetFolderAsync("Assets");
        var _files= await folder.GetFilesAsync(CommonFileQuery.OrderByName).AsTask().ConfigureAwait(false);

        var file = _files.FirstOrDefault(x => x.Name == filename);
        return file != null;
    }
}

并从我的 Windows 8 应用商店应用程序中调用它；

this.IconExists = this.Game != null && Storage.Exists(this.IconName).Result;

因此，如果我在上面的行上设置一个断点并逐步运行它，它可以工作，但没有中断并且仅运行应用程序会导致应用程序挂起。

几天前的提交中也有类似的代码；

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Windows.ApplicationModel;
using Windows.Storage;
using Windows.Storage.Search;

namespace eggrr.Core.FileStorage
{
    public class Storage
    {
        private IReadOnlyList<StorageFile> _files;

        public Storage()
        {
            _files = GetFilesAsync("Assets").Result;
        }

        private async Task<IReadOnlyList<StorageFile>> GetFilesAsync(string relativeFolderPath)
        {
            var path = string.Format("{0}\\{1}", Package.Current.InstalledLocation.Path, relativeFolderPath);
            var folder = await StorageFolder.GetFolderFromPathAsync(path);
            return await folder.GetFilesAsync(CommonFileQuery.OrderByName).AsTask().ConfigureAwait(false);
        }

        public bool Exists(string filename)
        {
            var file = _files.FirstOrDefault(x => x.Name == filename);
            return file != null;
        }

        private static readonly Storage _instance = new Storage();
        public static Storage Instance { get { return _instance; } }
    }
}

有什么想法吗？

【问题讨论】：

标签： c# windows-8 microsoft-metro windows-runtime winrt-async

【解决方案1】：

这似乎解决了它的问题；

    public static class Storage
{
    private static IReadOnlyList<StorageFile> _files;

    static Storage()
    {
        _files = GetFilesAsync("Assets").Result;
    }

    private async static Task<IReadOnlyList<StorageFile>> GetFilesAsync(string relativeFolderPath)
    {
        var folder = await Package.Current.InstalledLocation.GetFolderAsync("Assets").AsTask().ConfigureAwait(false);
        return await folder.GetFilesAsync(CommonFileQuery.OrderByName).AsTask().ConfigureAwait(false);
    }

    public static bool Exists(string filename)
    {
        var file = _files.FirstOrDefault(x => x.Name == filename);
        return file != null;
    }
}

更多信息；

【讨论】：

感谢分享，它一定会帮助其他遇到同样问题的人。