你当前正在访问 Microsoft Azure Global Edition 技术文档网站。 如果需要访问由世纪互联运营的 Microsoft Azure 中国技术文档网站，请访问 https://docs.azure.cn。
CloudBlob.DownloadRangeToStreamAsync 方法
定义
重要
一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。 对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。
重载
DownloadRangeToStreamAsync(Stream, Nullable<Int64>, Nullable<Int64>, AccessCondition, BlobRequestOptions, OperationContext, CancellationToken)
启动异步操作，将一系列字节从 Blob 下载到流。
[Microsoft.Azure.Storage.DoesServiceRequest]
public virtual System.Threading.Tasks.Task DownloadRangeToStreamAsync (System.IO.Stream target, long? offset, long? length, Microsoft.Azure.Storage.AccessCondition accessCondition, Microsoft.Azure.Storage.Blob.BlobRequestOptions options, Microsoft.Azure.Storage.OperationContext operationContext, System.Threading.CancellationToken cancellationToken);[<Microsoft.Azure.Storage.DoesServiceRequest>]
abstract member DownloadRangeToStreamAsync : System.IO.Stream * Nullable<int64> * Nullable<int64> * Microsoft.Azure.Storage.AccessCondition * Microsoft.Azure.Storage.Blob.BlobRequestOptions * Microsoft.Azure.Storage.OperationContext * System.Threading.CancellationToken -> System.Threading.Tasks.Task
override this.DownloadRangeToStreamAsync : System.IO.Stream * Nullable<int64> * Nullable<int64> * Microsoft.Azure.Storage.AccessCondition * Microsoft.Azure.Storage.Blob.BlobRequestOptions * Microsoft.Azure.Storage.OperationContext * System.Threading.CancellationToken -> System.Threading.Tasks.TaskPublic Overridable Function DownloadRangeToStreamAsync (target As Stream, offset As Nullable(Of Long), length As Nullable(Of Long), accessCondition As AccessCondition, options As BlobRequestOptions, operationContext As OperationContext, cancellationToken As CancellationToken) As Task参数
- accessCondition
- AccessCondition
一个 AccessCondition 对象，表示继续处理请求而必须满足的条件。 如果为 null，则不使用任何条件。
- options
- BlobRequestOptions
一个 BlobRequestOptions 对象，它指定请求的其他选项。
- operationContext
- OperationContext
一个 OperationContext 对象，它一个表示当前操作的上下文。
- cancellationToken
- CancellationToken
等待任务完成期间要观察的 CancellationToken。
返回
表示异步操作的 Task 对象。
- 属性
适用于
DownloadRangeToStreamAsync(Stream, Nullable<Int64>, Nullable<Int64>, AccessCondition, BlobRequestOptions, OperationContext)
启动异步操作，将一系列字节从 Blob 下载到流。
[Microsoft.Azure.Storage.DoesServiceRequest]
public virtual System.Threading.Tasks.Task DownloadRangeToStreamAsync (System.IO.Stream target, long? offset, long? length, Microsoft.Azure.Storage.AccessCondition accessCondition, Microsoft.Azure.Storage.Blob.BlobRequestOptions options, Microsoft.Azure.Storage.OperationContext operationContext);[<Microsoft.Azure.Storage.DoesServiceRequest>]
abstract member DownloadRangeToStreamAsync : System.IO.Stream * Nullable<int64> * Nullable<int64> * Microsoft.Azure.Storage.AccessCondition * Microsoft.Azure.Storage.Blob.BlobRequestOptions * Microsoft.Azure.Storage.OperationContext -> System.Threading.Tasks.Task
override this.DownloadRangeToStreamAsync : System.IO.Stream * Nullable<int64> * Nullable<int64> * Microsoft.Azure.Storage.AccessCondition * Microsoft.Azure.Storage.Blob.BlobRequestOptions * Microsoft.Azure.Storage.OperationContext -> System.Threading.Tasks.TaskPublic Overridable Function DownloadRangeToStreamAsync (target As Stream, offset As Nullable(Of Long), length As Nullable(Of Long), accessCondition As AccessCondition, options As BlobRequestOptions, operationContext As OperationContext) As Task参数
- accessCondition
- AccessCondition
一个 AccessCondition 对象，表示继续处理请求而必须满足的条件。 如果为 null，则不使用任何条件。
- options
- BlobRequestOptions
一个 BlobRequestOptions 对象，它指定请求的其他选项。
- operationContext
- OperationContext
一个 OperationContext 对象，它一个表示当前操作的上下文。
返回
表示异步操作的 Task 对象。
- 属性
适用于
DownloadRangeToStreamAsync(Stream, Nullable<Int64>, Nullable<Int64>, AccessCondition, BlobRequestOptions, OperationContext, IProgress<StorageProgress>, CancellationToken)
启动异步操作，将一系列字节从 Blob 下载到流。
[Microsoft.Azure.Storage.DoesServiceRequest]
public virtual System.Threading.Tasks.Task DownloadRangeToStreamAsync (System.IO.Stream target, long? offset, long? length, Microsoft.Azure.Storage.AccessCondition accessCondition, Microsoft.Azure.Storage.Blob.BlobRequestOptions options, Microsoft.Azure.Storage.OperationContext operationContext, IProgress<Microsoft.Azure.Storage.Core.Util.StorageProgress> progressHandler, System.Threading.CancellationToken cancellationToken);[<Microsoft.Azure.Storage.DoesServiceRequest>]
abstract member DownloadRangeToStreamAsync : System.IO.Stream * Nullable<int64> * Nullable<int64> * Microsoft.Azure.Storage.AccessCondition * Microsoft.Azure.Storage.Blob.BlobRequestOptions * Microsoft.Azure.Storage.OperationContext * IProgress<Microsoft.Azure.Storage.Core.Util.StorageProgress> * System.Threading.CancellationToken -> System.Threading.Tasks.Task
override this.DownloadRangeToStreamAsync : System.IO.Stream * Nullable<int64> * Nullable<int64> * Microsoft.Azure.Storage.AccessCondition * Microsoft.Azure.Storage.Blob.BlobRequestOptions * Microsoft.Azure.Storage.OperationContext * IProgress<Microsoft.Azure.Storage.Core.Util.StorageProgress> * System.Threading.CancellationToken -> System.Threading.Tasks.TaskPublic Overridable Function DownloadRangeToStreamAsync (target As Stream, offset As Nullable(Of Long), length As Nullable(Of Long), accessCondition As AccessCondition, options As BlobRequestOptions, operationContext As OperationContext, progressHandler As IProgress(Of StorageProgress), cancellationToken As CancellationToken) As Task参数
- accessCondition
- AccessCondition
一个 AccessCondition 对象，表示继续处理请求而必须满足的条件。 如果为 null，则不使用任何条件。
- options
- BlobRequestOptions
一个 BlobRequestOptions 对象，它指定请求的其他选项。
- operationContext
- OperationContext
一个 OperationContext 对象，它一个表示当前操作的上下文。
- progressHandler
- IProgress<StorageProgress>
用于 IProgress<T> 处理 StorageProgress 消息的 对象。
- cancellationToken
- CancellationToken
等待任务完成期间要观察的 CancellationToken。
返回
表示异步操作的 Task 对象。
- 属性
适用于
DownloadRangeToStreamAsync(Stream, Nullable<Int64>, Nullable<Int64>)
启动异步操作，将一系列字节从 Blob 下载到流。
[Microsoft.Azure.Storage.DoesServiceRequest]
public virtual System.Threading.Tasks.Task DownloadRangeToStreamAsync (System.IO.Stream target, long? offset, long? length);[<Microsoft.Azure.Storage.DoesServiceRequest>]
abstract member DownloadRangeToStreamAsync : System.IO.Stream * Nullable<int64> * Nullable<int64> -> System.Threading.Tasks.Task
override this.DownloadRangeToStreamAsync : System.IO.Stream * Nullable<int64> * Nullable<int64> -> System.Threading.Tasks.TaskPublic Overridable Function DownloadRangeToStreamAsync (target As Stream, offset As Nullable(Of Long), length As Nullable(Of Long)) As Task参数
返回
表示异步操作的 Task 对象。
- 属性
适用于
DownloadRangeToStreamAsync(Stream, Nullable<Int64>, Nullable<Int64>, CancellationToken)
启动异步操作，将一系列字节从 Blob 下载到流。
[Microsoft.Azure.Storage.DoesServiceRequest]
public virtual System.Threading.Tasks.Task DownloadRangeToStreamAsync (System.IO.Stream target, long? offset, long? length, System.Threading.CancellationToken cancellationToken);[<Microsoft.Azure.Storage.DoesServiceRequest>]
abstract member DownloadRangeToStreamAsync : System.IO.Stream * Nullable<int64> * Nullable<int64> * System.Threading.CancellationToken -> System.Threading.Tasks.Task
override this.DownloadRangeToStreamAsync : System.IO.Stream * Nullable<int64> * Nullable<int64> * System.Threading.CancellationToken -> System.Threading.Tasks.TaskPublic Overridable Function DownloadRangeToStreamAsync (target As Stream, offset As Nullable(Of Long), length As Nullable(Of Long), cancellationToken As CancellationToken) As Task参数
- cancellationToken
- CancellationToken
等待任务完成期间要观察的 CancellationToken。
返回
表示异步操作的 Task 对象。
- 属性
适用于
反馈
即将发布：在整个 2024 年，我们将逐步淘汰作为内容反馈机制的“GitHub 问题”，并将其取代为新的反馈系统。 有关详细信息，请参阅：https://aka.ms/ContentUserFeedback。
提交和查看相关反馈