/// <summary>
/// Releases the file resources used by the stream.
/// </summary>
public void Dispose()
{
if (this.originalStream != null)
{
this.originalStream.Dispose();
this.originalStream = null;
}
}
public IAsyncOperation<ICloudFileStream> OpenWriteAsync(long? size, AccessCondition accessCondition, FileRequestOptions options, OperationContext operationContext)
#endif
{
FileRequestOptions modifiedOptions = FileRequestOptions.ApplyDefaults(options, this.ServiceClient, false);
operationContext = operationContext ?? new OperationContext();
bool createNew = size.HasValue;
if (!createNew && modifiedOptions.StoreFileContentMD5.Value)
{
throw new ArgumentException(SR.MD5NotPossible);
}
#if ASPNET_K
return Task.Run(async () =>
{
if (createNew)
{
await this.CreateAsync(size.Value, accessCondition, options, operationContext, cancellationToken);
}
else
{
await this.FetchAttributesAsync(accessCondition, options, operationContext, cancellationToken);
#else
return AsyncInfo.Run(async (token) =>
{
if (createNew)
{
await this.CreateAsync(size.Value, accessCondition, options, operationContext);
}
else
{
await this.FetchAttributesAsync(accessCondition, options, operationContext);
#endif
size = this.Properties.Length;
}
if (accessCondition != null)
{
accessCondition = AccessCondition.GenerateLeaseCondition(accessCondition.LeaseId);
}
#if ASPNET_K
CloudFileStream stream = new FileWriteStream(this, size.Value, createNew, accessCondition, modifiedOptions, operationContext);
return stream;
}, cancellationToken);
#else
ICloudFileStream stream = new FileWriteStreamHelper(this, size.Value, createNew, accessCondition, modifiedOptions, operationContext);
return stream;
});
#endif
}
/// <summary>
/// Initializes a new instance of the FileWriteStreamHelper class for a file.
/// </summary>
/// <param name="file">File reference to write to.</param>
/// <param name="fileSize">Size of the file.</param>
/// <param name="createNew">Use <c>true</c> if the file is newly created, <c>false</c> otherwise.</param>
/// <param name="accessCondition">An object that represents the access conditions for the file. If null, no condition is used.</param>
/// <param name="options">An object that specifies additional options for the request.</param>
internal FileWriteStreamHelper(CloudFile file, long fileSize, bool createNew, AccessCondition accessCondition, FileRequestOptions options, OperationContext operationContext)
{
this.originalStream = new FileWriteStream(file, fileSize, createNew, accessCondition, options, operationContext);
this.originalStreamAsOutputStream = this.originalStream.AsOutputStream();
}
/// <summary>
/// Initializes a new instance of the FileWriteStreamHelper class for a file.
/// </summary>
/// <param name="file">File reference to write to.</param>
/// <param name="fileSize">Size of the file.</param>
/// <param name="createNew">Use <c>true</c> if the file is newly created, <c>false</c> otherwise.</param>
/// <param name="accessCondition">An object that represents the access conditions for the file. If null, no condition is used.</param>
/// <param name="options">An object that specifies additional options for the request.</param>
internal FileWriteStreamHelper(CloudFile file, long fileSize, bool createNew, AccessCondition accessCondition, FileRequestOptions options, OperationContext operationContext)
{
this.originalStream = new FileWriteStream(file, fileSize, createNew, accessCondition, options, operationContext);
this.originalStreamAsOutputStream = this.originalStream.AsOutputStream();
}
/// <summary>
/// Releases the file resources used by the stream.
/// </summary>
public void Dispose()
{
if (this.originalStream != null)
{
this.originalStream.Dispose();
this.originalStream = null;
}
}