CloudBlockBlob.OpenWriteAsync Method (Microsoft.WindowsAzure.Storage.Blob)

Initiates an asynchronous operation to open a stream for writing to the blob.

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

Syntax

C#

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[DoesServiceRequestAttribute]
public virtual Task<CloudBlobStream> OpenWriteAsync()

C++

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public:
[DoesServiceRequestAttribute]
virtual Task<CloudBlobStream^>^ OpenWriteAsync()

F#

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[<DoesServiceRequestAttribute>]
abstract OpenWriteAsync : unit -> Task<CloudBlobStream>
[<DoesServiceRequestAttribute>]
override OpenWriteAsync : unit -> Task<CloudBlobStream>

VB

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<DoesServiceRequestAttribute>
Public Overridable Function OpenWriteAsync As Task(Of CloudBlobStream)

Return Value

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

A Task<TResult><TResult><'TResult>(Of TResult) object of type CloudBlobStream that represents the asynchronous operation.

Remarks

Note that this method always makes a call to the Referenced topic '37ab2b15-e467-4a62-9df1-c4543f29acfb' is not in the TOC. method under the covers.

Set the StreamWriteSizeInBytesStreamWriteSizeInBytesStreamWriteSizeInBytesStreamWriteSizeInBytes property before calling this method to specify the block size to write, in bytes, ranging from between 16 KB and 4 MB inclusive.

See Also

OpenWriteAsync Overload
CloudBlockBlob Class
Microsoft.WindowsAzure.Storage.Blob Namespace

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