.NET Framework 4.6.1 WinForms应用访问Azure存储账户遇异常求助

我有一个基于.NET Framework 4.6.1的遗留WinForms应用，需添加上传文件至Azure存储账户的功能。尝试引入Azure.Storage.Blobs NuGet包后出现缺失DLL的问题，调用以下代码时抛出异常：

Public Function StreamFileFromAzureStorageAcct(ByVal clientLocalFilePath As String, ByVal containerDestName As String, ByRef strReturn As String) As StreamReader

    'Dim strReturn As String = String.Empty
    Dim textInStream As Stream = Nothing
    Dim textIn As StreamReader = Nothing
    Dim connectionString As String = Nothing

    Try

        connectionString = String.Format("DefaultEndpointsProtocol=https;AccountName={0};AccountKey={1};EndpointSuffix={2}", modConfigSettings.AzureStorageAcctName, modConfigSettings.AzureStorageAcctKey, modConfigSettings.AzureStorageAcctURL)
        Dim Container As BlobContainerClient = New BlobContainerClient(connectionString, containerDestName)

        Dim BlobClient As BlobClient = Container.GetBlobClient(Path.GetFileName(clientLocalFilePath))

        Dim readOptions As BlobOpenReadOptions = New BlobOpenReadOptions(False)
        readOptions.Position = 0

        ''Azure Storage Acct Read call returns a Stream
        textInStream = BlobClient.OpenRead(readOptions)

        '' Pass the Stream to a StreamReader to stay inline with existing code.
        textIn = New StreamReader(textInStream)

        strReturn = "Success"

        Return textIn

    Catch er As Exception
        strReturn = String.Format("Failed to Stream from Storage Account: {0}-File:{1}-connectionString: {2}-{3}", er.Message, Path.GetFileName(clientLocalFilePath), connectionString, er.StackTrace)
    End Try

    Return Nothing

End Function

异常信息：

Failed to Stream from Storage Account: The type initializer for 'PerTypeValues`1' threw an exception.-

异常堆栈：

at System.SpanHelpers.IsReferenceOrContainsReferencesT
at Azure.Storage.Blobs.BlobRestClient.get_ResponseClassifier200()
at Azure.Storage.Blobs.BlobRestClient.CreateGetPropertiesRequest(String snapshot, String versionId, Nullable`1 timeout, String leaseId, String encryptionKey, String encryptionKeySha256, String encryptionAlgorithm, String ifTags, RequestConditions requestConditions, RequestContext context)
at Azure.Storage.Blobs.BlobRestClient.GetProperties(String snapshot, String versionId, Nullable`1 timeout, String leaseId, String encryptionKey, String encryptionKeySha256, String encryptionAlgorithm, String ifTags, RequestConditions requestConditions, RequestContext context)
at Azure.Storage.Blobs.Specialized.BlobBaseClient.d__124.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Azure.Storage.Blobs.Specialized.BlobBaseClient.d__98.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Azure.Storage.Blobs.Specialized.BlobBaseClient.OpenRead(BlobOpenReadOptions options, CancellationToken cancellationToken)
at DBAccessObjects.RemFredDataAdmin.StreamFileFromAzureStorageAcct(String clientLocalFilePath, String containerDestName, String& strReturn) in C:\Users\csale\source\Workspaces\Application Server\FredServer\DBAccessObjects\RemFredDataAdmin.vb:line 15904

请问我使用的NuGet包是否正确？该如何解决此异常问题？

1. 调整NuGet包版本 #

你使用的Azure.Storage.Blobs是Azure存储官方SDK，但最新版本已不再支持.NET Framework 4.6.1，仅适配.NET 6+等现代框架。需安装标注支持.NET Framework 4.6.1的旧版本，比如12.14.0或更低版本（可在NuGet包管理器的版本筛选列表中选择对应版本）。

2. 补充缺失的依赖包 #

.NET Framework 4.6.1原生缺少Azure SDK运行所需的部分API，需手动安装以下兼容的NuGet包：

• System.Memory（推荐版本4.5.4）
• System.Buffers（推荐版本4.5.1）
• System.Numerics.Vectors（推荐版本4.5.0）

这些包会为.NET Framework 4.6.1补充缺失的类型和方法，解决PerTypeValues1`类型初始化失败的核心问题。

3. 代码细节优化 #

• 检查连接字符串格式：EndpointSuffix参数应为core.windows.net（或对应区域的存储后缀），不要直接填写完整的存储账户URL。
• 同步/异步方法适配：旧版本的Azure.Storage.Blobs提供同步的OpenRead重载，确保你调用的是适配.NET Framework 4.6.1的同步方法；若需切换为异步，需将方法改为Async修饰并使用Await关键字，避免线程阻塞引发异常。

内容的提问来源于stack exchange，提问作者user2413934