小编Luu*_*uuk的帖子

我有下一个XML文件:

<Root>
    <Document>      
        <Id>d639a54f-baca-11e1-8067-001fd09b1dfd</Id>
        <Balance>-24145</Balance>
    </Document>
    <Document>      
        <Id>e3b3b4cd-bb8e-11e1-8067-001fd09b1dfd</Id>
        <Balance>0.28</Balance> 
    </Document>
</Root>

我把它反序列化到这个类:

[XmlRoot("Root", IsNullable = false)]
public class DocBalanceCollection
{
    [XmlElement("Document")]
    public List<DocBalanceItem> DocsBalanceItems = new List<DocBalanceItem>();
}

在哪里DocBalanceItem:

public class DocBalanceItem
{
    [XmlElement("Id")]
    public Guid DocId { get; set; }

    [XmlElement("Balance")]
    public decimal? BalanceAmount { get; set; }
}

这是我的反序列化方法:

public DocBalanceCollection DeserializeDocBalances(string filePath)
{
    var docBalanceCollection = new DocBalanceCollection();

    if (File.Exists(filePath))
    {
        var serializer = new XmlSerializer(docBalanceCollection.GetType());
        TextReader reader = new StreamReader(filePath);
        docBalanceCollection = (DocBalanceCollection)serializer.Deserialize(reader);
        reader.Close(); …

最近，我们在安装了VSTS构建代理的构建代理（运行Windows 2016的两台单独安装的计算机）上遇到了一个烦人的问题。当我们运行del "\\?\%CD%\nul" （请参阅超级用户）时，它会运行几个版本，然后再次出现。

如何以及为什么创建该文件，以及如何确保构建代理不会中断？

下面的堆栈跟踪：

Failed to create Release artifact directory C:\agent\_work\r1\a with an exception
Microsoft.VisualStudio.Services.Agent.Worker.Release.Artifacts.ArtifactDirectoryCreationFailedException: Failed to create Release artifact directory 'C:\agent\_work\r1\a'. ---> System.UnauthorizedAccessException: Access to the path 'C:\agent\_work\r1\a\NUL' is denied.
   at System.IO.Win32FileSystem.DeleteFile(String fullPath)
   at System.IO.FileInfo.Delete()
   at Microsoft.VisualStudio.Services.Agent.Util.IOUtil.c__DisplayClass26_1.b__0(FileSystemInfo item)
   at System.Linq.Parallel.ForAllOperator`1.ForAllEnumerator`1.MoveNext(TInput& currentElement, Int32& currentKey)
   at System.Linq.Parallel.ForAllSpoolingTask`2.SpoolingWork()
   at System.Linq.Parallel.SpoolingTaskBase.Work()
   at System.Linq.Parallel.QueryTask.BaseWork(Object unused)
   at System.Linq.Parallel.QueryTask.RunTaskSynchronously(Object o)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot)
   --- End of inner exception stack trace ---
   at Microsoft.VisualStudio.Services.Agent.Worker.Release.ReleaseFileSystemManager.EnsureEmptyDirectory(String directoryPath, CancellationToken …

我们在MemoryMappedFile中加载了一个222MB的文件,用于原始数据访问.使用write方法更新此数据.经过一些计算后,数据应重置为文件的原始值.我们目前通过部署类并创建新实例来实现这一点.这种情况很好,但有时CreateViewAccessor崩溃时出现以下异常:

System.Exception:没有足够的存储空间来处理此命令.---> System.IO.IOException:没有足够的存储空间来处理此命令.

at System.IO .__ Error.WinIOError(Int32 errorCode,String maybeFullPath)在System.IO.MemoryMappedFiles.MemoryMappedFile.CreateViewAccessor的System.IO.MemoryMappedFiles.MemoryMappedView.CreateView(SafeMemoryMappedFileHandle> memMappedFileHandle,MemoryMappedFileAccess访问,Int64偏移,Int64大小)处. Int64偏移量,Int64>大小,MemoryMappedFileAccess访问权限)

以下类用于访问memorymapped文件:

public unsafe class MemoryMapAccessor : IDisposable
{
    private MemoryMappedViewAccessor _bmaccessor;
    private MemoryMappedFile _mmf;
    private byte* _ptr;
    private long _size;

    public MemoryMapAccessor(string path, string mapName)
    {
        FileInfo info = new FileInfo(path);
        _size = info.Length;

        using (FileStream stream = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Delete | FileShare.ReadWrite))
            _mmf = MemoryMappedFile.CreateFromFile(stream, mapName, _size, MemoryMappedFileAccess.Read, null, HandleInheritability.None, false);

        _bmaccessor = _mmf.CreateViewAccessor(0, 0, MemoryMappedFileAccess.CopyOnWrite);
        _bmaccessor.SafeMemoryMappedViewHandle.AcquirePointer(ref _ptr);
    }

    public void Dispose()
    {
        if (_bmaccessor != …

我们已使用本教程启用托管标识以连接到 Azure 上的 Identity Server 数据库，但一段时间（约 7 小时）后出现以下错误。

System.Data.SqlClient.SqlException (0x80131904): Login failed for user 'NT AUTHORITY\ANONYMOUS LOGON'.
   at System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, SqlCredential credential, Object providerInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString userConnectionOptions, SessionData reconnectSessionData, Boolean applyTransientFaultHandling, String accessToken)
   at System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnection
PoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection, DbConnectionOptions userOptions)
   at System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnectionPool pool, DbConnection owningObject, DbConnectionOptions options, DbConnectionPoolKey poolKey, DbConnectionOptions userOptions)
   at System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection)
   at System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal …

尝试调试Any CPU控制台应用程序时,我收到以下错误.当我将平台目标切换到x86时,它工作正常.我试图修复VS2010并重新安装VS2010.

完整的错误消息是: 错误消息http://www.bacolan.com/vs-error.png

除了完整的Windows重新安装外,有没有人有解决方案？