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CloudBlockBlob.BeginUploadFromByteArray Method (Byte[], Int32, Int32, AsyncCallback, Object)

Updated: May 15, 2014

Begins an asynchronous operation to upload the contents of a byte array to a blob.

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

public ICancellableAsyncResult BeginUploadFromByteArray (
	byte[] buffer,
	int index,
	int count,
	AsyncCallback callback,
	Object state



An array of bytes.


The zero-based byte offset in buffer at which to begin uploading bytes to the blob.


The number of bytes to be written to the blob.


An AsyncCallback delegate that will receive notification when the asynchronous operation completes.


A user-defined object that will be passed to the callback delegate.

Return Value

An ICancellableAsyncResult that references the asynchronous operation.

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Development Platforms

Windows Vista, Windows 7, Windows Server 2008, Windows 8.1, Windows Server 2012 R2, Windows 8 and Windows Server 2012


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