public static Task WritePagesAsync(this CloudPageBlob blob, byte[] pageData, int start, int count, int startOffset)
{
MemoryStream stream = null;
return Task.Factory.FromAsync(
(cb, state) =>
{
stream = new MemoryStream(pageData, start, count);
var ar = blob.BeginWritePages(stream, startOffset, null, cb, state);
return ar;
},
ar =>
{
blob.EndWritePages(ar);
stream.Dispose();
},
null);
}
/// <summary>
/// Writes pages to a page blob asynchronously.
/// </summary>
/// <param name="pageBlob">Cloud page blob.</param>
/// <param name="pageData">A stream providing the page data.</param>
/// <param name="startOffset">The offset at which to begin writing, in bytes. The offset must be a multiple of 512.</param>
/// <param name="contentMd5">
/// An optional hash value that will be used to set the
/// <see cref="P:Microsoft.WindowsAzure.Storage.Blob.BlobProperties.ContentMD5" />
/// property on the blob. May be <c>null</c> or an empty string.
/// </param>
/// <param name="accessCondition">
/// An <see cref="T:Microsoft.WindowsAzure.Storage.AccessCondition" /> object that represents the access conditions for the blob. If <c>null</c>, no condition is used.
/// </param>
/// <param name="cancellationToken">Cancellation token.</param>
public static Task WritePagesAsync(
this CloudPageBlob pageBlob,
Stream pageData,
long startOffset,
string contentMd5 = null,
AccessCondition accessCondition = null,
CancellationToken cancellationToken = default (CancellationToken))
{
ICancellableAsyncResult asyncResult = pageBlob.BeginWritePages(pageData, startOffset, contentMd5, accessCondition, null, null, null, null);
CancellationTokenRegistration registration = cancellationToken.Register(p => asyncResult.Cancel(), null);
return Task.Factory.FromAsync(
asyncResult,
result =>
{
registration.Dispose();
pageBlob.EndWritePages(result);
});
}
public static Task WritePagesAsync(this CloudPageBlob blob, Stream pageData, int startOffset)
{
return Task.Factory.FromAsync(
(cb, state) => blob.BeginWritePages(pageData, startOffset, null, cb, state),
ar => blob.EndWritePages(ar),
null);
}
