7
我的图书馆正在使用独立存储,但仅在需求时才这样做。所以我使用Lazy<T>
。懒洋洋地创建独立存储
然而,这将引发:
System.IO.IsolatedStorage.IsolatedStorageException “无法确定装配授予的权限。”
Lazy是否会让奇怪的线程混淆孤立的存储初始化?
示例代码:
using System;
using System.IO.IsolatedStorage;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
var thisWorks = IsolatedStorageFile.GetMachineStoreForAssembly();
thisWorks.Dispose();
var lazyStorage = new Lazy<IsolatedStorageFile>(IsolatedStorageFile.GetMachineStoreForAssembly);
var thisFails = lazyStorage.Value;
thisFails.Dispose();
}
}
}
完整的堆栈跟踪:
System.IO.IsolatedStorage.IsolatedStorageException was unhandled
Message=Unable to determine granted permission for assembly.
Source=mscorlib
StackTrace:
Server stack trace:
at System.IO.IsolatedStorage.IsolatedStorage.InitStore(IsolatedStorageScope scope, Type domainEvidenceType, Type assemblyEvidenceType)
at System.IO.IsolatedStorage.IsolatedStorageFile.GetMachineStoreForAssembly()
at System.Lazy`1.CreateValue()
Exception rethrown at [0]:
at System.IO.IsolatedStorage.IsolatedStorage.InitStore(IsolatedStorageScope scope, Type domainEvidenceType, Type assemblyEvidenceType)
at System.IO.IsolatedStorage.IsolatedStorageFile.GetMachineStoreForAssembly()
at System.Lazy`1.CreateValue()
at System.Lazy`1.LazyInitValue()
at System.Lazy`1.get_Value()
at ConsoleApplication1.Program.Main(String[] args) in C:\Users\Andrew Davey\AppData\Local\Temporary Projects\ConsoleApplication1\Program.cs:line 19
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
InnerException: