Windows通用应用程序错误System.IO.FileSystem - 科尔多瓦

Question

我想在Windows 10 cordova应用程序中使用两个不同的窗口UWP项目。两个项目都会产生相同的错误。在其中一个项目的代码如下：

using System; 
using System.Collections.Generic; 
using System.IO; 
using System.Runtime.Serialization; 
using System.Runtime.Serialization.Json; 
using System.Threading.Tasks; 
using Windows.Foundation; 
using Windows.Storage; 

namespace DiskSpaceLibrary 
{ 
    public sealed class DiskSpace 
    { 

     internal static readonly StorageFolder[] APP_FOLDERS = { 
      ApplicationData.Current.LocalFolder, 
      ApplicationData.Current.RoamingFolder, 
      ApplicationData.Current.TemporaryFolder 
     }; 

     [DataContract] 
     internal class Result 
     { 
      [DataMember] 
      internal ulong app = 0; 
      [DataMember] 
      internal ulong total = 0; 
      [DataMember] 
      internal ulong free = 0; 
     } 

     // Manually compute total size of the given StorageFolder 
     private static ulong sizeFolder(StorageFolder folder) 
     { 
      ulong folderSize = 0; 
      try 
      { 
       DirectoryInfo dirInfo = new DirectoryInfo(folder.Path); 

       // Get back a prefilled (with size) list of files contained in given folder 
       foreach (var fileInfo in dirInfo.EnumerateFiles("*", SearchOption.AllDirectories)) 
       { 
        folderSize += (ulong)fileInfo.Length; 
       } 
      } 
      catch (Exception e) 
      { 
       System.Diagnostics.Debug.WriteLine(e.ToString()); 
       return 0; 
      } 
      return folderSize; 
     } 

     // Return the system FreeSpace and Capacity properties 
     private async static Task<IDictionary<string, object>> getExtraProperties() 
     { 
      var basicProperties = await Windows.Storage.ApplicationData.Current.LocalFolder.GetBasicPropertiesAsync(); 
      return await basicProperties.RetrievePropertiesAsync(new string[] { "System.FreeSpace", "System.Capacity" }); 
     } 

     // Class Entry point 
     public static IAsyncOperation<string> info(string args) 
     { 
      // Entry point in WinRT can not return Task<T> - so here is a trick to convert IAsyncOperation (WinRT) into classic C# async 
      return infoTask().AsAsyncOperation(); 
     } 

     // The real disk space work is done here within some asynchronous stuff 
     private async static Task<string> infoTask() 
     { 
      Result result = new Result(); 

      // Run folder discovery into another Thread to not block UI Thread 
      await Task.Run(() => { 

       foreach (var folder in APP_FOLDERS) 
       { 
        result.app += sizeFolder(folder); 
       } 
      }); 

      await getExtraProperties().ContinueWith(propertiesTask => 
      { 
       result.free = (ulong)propertiesTask.Result["System.FreeSpace"]; 
       result.total = (ulong)propertiesTask.Result["System.Capacity"]; 
      }); 

      // Return JSON Result 
      DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(Result)); 
      MemoryStream outputMs = new MemoryStream(); 
      serializer.WriteObject(outputMs, result); 

      outputMs.Position = 0; 
      StreamReader sr = new StreamReader(outputMs); 

      return sr.ReadToEnd(); 

     } 
    } 
} 

这个项目是从https://github.com/sqli/sqli-cordova-disk-space-plugin

它只是查找使用的磁盘空间并报告使用System.IO.DirectoryInfo和使用，可用空间异步方法来获得可用空间和容量。

当我建立这是它生成winmd文件没有问题，我已经正确地注册并加载这些在我的科尔多瓦（Visual Studio 2017）项目，建立为Windows 10并运行 - 当我在主cordova项目

DiskSpacePlugin.info({}, function (ok) { console.log(ok); }, function (err) { console.log(err); }); 

我得到这样的结果在控制台

WinRTError: The system cannot find the file specified. 

System.IO.FileNotFoundException: Could not load file or assembly 'System.IO.FileSystem, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified. 
    at DiskSpaceLibrary.DiskSpace.sizeFolder(StorageFolder folder) 
    at DiskSpaceLibrary.DiskSpace.<>c__DisplayClass5_0.<infoTask>b__0() 
    at System.Threading.Tasks.Task.Execute() 
--- End of stack trace from previous location where exception was thrown --- 
    at System.Runtime.Ex 
console-via-logger.js (173,15) 
    { 
     [functions]: , 
     __proto__: { }, 
     asyncOpCausalityId: 461, 
     asyncOpSource: { }, 
     asyncOpType: "Windows.Foundation.IAsyncOperation`1<String>", 
     description: "The system cannot find the file specified. 

System.IO.FileNotFoundException: Could not load file or assembly 'System.IO.FileSystem, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified. 
    at DiskSpaceLibrary.DiskSpace.sizeFolder(StorageFolder folder) 
    at DiskSpaceLibrary.DiskSpace.<>c__DisplayClass5_0.<infoTask>b__0() 
    at System.Threading.Tasks.Task.Execute() 
--- End of stack trace from previous location where exception was thrown --- 
    at System.Runtime.Ex", 
     message: "The system cannot find the file specified. 

System.IO.FileNotFoundException: Could not load file or assembly 'System.IO.FileSystem, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified. 
    at DiskSpaceLibrary.DiskSpace.sizeFolder(StorageFolder folder) 
    at DiskSpaceLibrary.DiskSpace.<>c__DisplayClass5_0.<infoTask>b__0() 
    at System.Threading.Tasks.Task.Execute() 
--- End of stack trace from previous location where exception was thrown --- 
    at System.Runtime.Ex", 
     name: "WinRTError", 
     number: -2147024894 
    } 

我也曾尝试另一个模块在科尔多瓦窗口10项目解压文件（我没有这一个源然而说到从https://github.com/Culture22/cordova-windows10-zip）它来了当我尝试在应用程序中运行它时，会出现完全相同的错误消息。

我已经搜索了并且在过去的4天里查找了这个问题，并且我无法进展，所使用的方法都是由框架明显看着的支持（msdn.microsoft.com/en-us/library/ windows/apps/mt185496.aspx） - 有没有人有任何见解？

Answer 1

看起来像你引用的库引用了System.IO.FileSystem.dll，但是无论出于何种原因，它没有被部署到应用程序中。我建议尝试添加到您的应用程序的System.IO.FileSystem.dll nuget引用。