ICloudBlob.DownloadRangeToByteArrayAsync Method (Byte[], Int32, Nullable(Int64), Nullable(Int64), AccessCondition, BlobRequestOptions, OperationContext, CancellationToken) (Microsoft.WindowsAzure.Storage.Blob)

Initiates an asynchronous operation to download a range of bytes from a blob to a byte array.

Namespace:   Microsoft.WindowsAzure.Storage.Blob
Assembly:  Microsoft.WindowsAzure.Storage (in Microsoft.WindowsAzure.Storage.dll)

Syntax

C#

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Task<int> DownloadRangeToByteArrayAsync(
	byte[] target,
	int index,
	Nullable<long> blobOffset,
	Nullable<long> length,
	AccessCondition accessCondition,
	BlobRequestOptions options,
	OperationContext operationContext,
	CancellationToken cancellationToken
)

C++

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Task<int>^ DownloadRangeToByteArrayAsync(
	array<unsigned char>^ target,
	int index,
	Nullable<long long> blobOffset,
	Nullable<long long> length,
	AccessCondition^ accessCondition,
	BlobRequestOptions^ options,
	OperationContext^ operationContext,
	CancellationToken cancellationToken
)

F#

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abstract DownloadRangeToByteArrayAsync : 
        target:byte[] *
        index:int *
        blobOffset:Nullable<int64> *
        length:Nullable<int64> *
        accessCondition:AccessCondition *
        options:BlobRequestOptions *
        operationContext:OperationContext *
        cancellationToken:CancellationToken -> Task<int>

VB

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Function DownloadRangeToByteArrayAsync (
	target As Byte(),
	index As Integer,
	blobOffset As Nullable(Of Long),
	length As Nullable(Of Long),
	accessCondition As AccessCondition,
	options As BlobRequestOptions,
	operationContext As OperationContext,
	cancellationToken As CancellationToken
) As Task(Of Integer)

Parameters

target

Type: System.Byte[]array<System::Byte>^System.Byte[]System.Byte()

The target byte array.

index

Type: System.Int32System::Int32System.Int32System.Int32

The starting offset in the byte array.

blobOffset

Type: System.Nullable<Int64>System::Nullable<Int64>System.Nullable<Int64>System.Nullable(Of Int64)

The starting offset of the data range, in bytes.

length

Type: System.Nullable<Int64>System::Nullable<Int64>System.Nullable<Int64>System.Nullable(Of Int64)

The length of the data range, in bytes.

accessCondition

Type: Microsoft.WindowsAzure.Storage.AccessConditionMicrosoft.WindowsAzure.Storage::AccessCondition^Microsoft.WindowsAzure.Storage.AccessConditionMicrosoft.WindowsAzure.Storage.AccessCondition

An AccessCondition object that represents the condition that must be met in order for the request to proceed.

options

Type: Microsoft.WindowsAzure.Storage.Blob.BlobRequestOptionsMicrosoft.WindowsAzure.Storage.Blob::BlobRequestOptions^Microsoft.WindowsAzure.Storage.Blob.BlobRequestOptionsMicrosoft.WindowsAzure.Storage.Blob.BlobRequestOptions

A BlobRequestOptions object that specifies additional options for the request.

operationContext

Type: Microsoft.WindowsAzure.Storage.OperationContextMicrosoft.WindowsAzure.Storage::OperationContext^Microsoft.WindowsAzure.Storage.OperationContextMicrosoft.WindowsAzure.Storage.OperationContext

An OperationContext object that represents the context for the current operation.

cancellationToken

Type: System.Threading.CancellationTokenSystem.Threading::CancellationTokenSystem.Threading.CancellationTokenSystem.Threading.CancellationToken

A CancellationToken to observe while waiting for a task to complete.

Return Value

Type: System.Threading.Tasks.Task<Int32>System.Threading.Tasks::Task<Int32>^System.Threading.Tasks.Task<Int32>System.Threading.Tasks.Task(Of Int32)

A Task object of type int that represents the asynchronous operation.

See Also

DownloadRangeToByteArrayAsync Overload
ICloudBlob Interface
Microsoft.WindowsAzure.Storage.Blob Namespace

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