CloudFile.OpenWriteAsync Method
Definition
Important
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Overloads
| OpenWriteAsync(Nullable<Int64>) |
Returns a task that performs an asynchronous operation to open a stream for writing to the file. If the file already exists, then existing data in the file may be overwritten. |
| OpenWriteAsync(Nullable<Int64>, CancellationToken) |
Returns a task that performs an asynchronous operation to open a stream for writing to the file. If the file already exists, then existing data in the file may be overwritten. |
| OpenWriteAsync(Nullable<Int64>, AccessCondition, FileRequestOptions, OperationContext) |
Returns a task that performs an asynchronous operation to open a stream for writing to the file. If the file already exists, then existing data in the file may be overwritten. |
| OpenWriteAsync(Nullable<Int64>, AccessCondition, FileRequestOptions, OperationContext, CancellationToken) |
Returns a task that performs an asynchronous operation to open a stream for writing to the file. If the file already exists, then existing data in the file may be overwritten. |
OpenWriteAsync(Nullable<Int64>)
Returns a task that performs an asynchronous operation to open a stream for writing to the file. If the file already exists, then existing data in the file may be overwritten.
[Microsoft.Azure.Storage.DoesServiceRequest]
public virtual System.Threading.Tasks.Task<Microsoft.Azure.Storage.File.CloudFileStream> OpenWriteAsync (long? size);[<Microsoft.Azure.Storage.DoesServiceRequest>]
abstract member OpenWriteAsync : Nullable<int64> -> System.Threading.Tasks.Task<Microsoft.Azure.Storage.File.CloudFileStream>
override this.OpenWriteAsync : Nullable<int64> -> System.Threading.Tasks.Task<Microsoft.Azure.Storage.File.CloudFileStream>Public Overridable Function OpenWriteAsync (size As Nullable(Of Long)) As Task(Of CloudFileStream)Parameters
The size of the file to create, in bytes, or null. If null, the file must already exist. If not null, a new file of the given size will be created. If size is not null but the file already exists on the service, the already-existing file will be deleted.
Returns
A Task<TResult> object that represents the current operation.
- Attributes
Applies to
OpenWriteAsync(Nullable<Int64>, CancellationToken)
Returns a task that performs an asynchronous operation to open a stream for writing to the file. If the file already exists, then existing data in the file may be overwritten.
[Microsoft.Azure.Storage.DoesServiceRequest]
public virtual System.Threading.Tasks.Task<Microsoft.Azure.Storage.File.CloudFileStream> OpenWriteAsync (long? size, System.Threading.CancellationToken cancellationToken);[<Microsoft.Azure.Storage.DoesServiceRequest>]
abstract member OpenWriteAsync : Nullable<int64> * System.Threading.CancellationToken -> System.Threading.Tasks.Task<Microsoft.Azure.Storage.File.CloudFileStream>
override this.OpenWriteAsync : Nullable<int64> * System.Threading.CancellationToken -> System.Threading.Tasks.Task<Microsoft.Azure.Storage.File.CloudFileStream>Public Overridable Function OpenWriteAsync (size As Nullable(Of Long), cancellationToken As CancellationToken) As Task(Of CloudFileStream)Parameters
The size of the file to create, in bytes, or null. If null, the file must already exist. If not null, a new file of the given size will be created. If size is not null but the file already exists on the service, the already-existing file will be deleted.
- cancellationToken
- CancellationToken
A CancellationToken to observe while waiting for a task to complete.
Returns
A Task<TResult> object that represents the current operation.
- Attributes
Applies to
OpenWriteAsync(Nullable<Int64>, AccessCondition, FileRequestOptions, OperationContext)
Returns a task that performs an asynchronous operation to open a stream for writing to the file. If the file already exists, then existing data in the file may be overwritten.
[Microsoft.Azure.Storage.DoesServiceRequest]
public virtual System.Threading.Tasks.Task<Microsoft.Azure.Storage.File.CloudFileStream> OpenWriteAsync (long? size, Microsoft.Azure.Storage.AccessCondition accessCondition, Microsoft.Azure.Storage.File.FileRequestOptions options, Microsoft.Azure.Storage.OperationContext operationContext);[<Microsoft.Azure.Storage.DoesServiceRequest>]
abstract member OpenWriteAsync : Nullable<int64> * Microsoft.Azure.Storage.AccessCondition * Microsoft.Azure.Storage.File.FileRequestOptions * Microsoft.Azure.Storage.OperationContext -> System.Threading.Tasks.Task<Microsoft.Azure.Storage.File.CloudFileStream>
override this.OpenWriteAsync : Nullable<int64> * Microsoft.Azure.Storage.AccessCondition * Microsoft.Azure.Storage.File.FileRequestOptions * Microsoft.Azure.Storage.OperationContext -> System.Threading.Tasks.Task<Microsoft.Azure.Storage.File.CloudFileStream>Public Overridable Function OpenWriteAsync (size As Nullable(Of Long), accessCondition As AccessCondition, options As FileRequestOptions, operationContext As OperationContext) As Task(Of CloudFileStream)Parameters
The size of the file to create, in bytes, or null. If null, the file must already exist. If not null, a new file of the given size will be created. If size is not null but the file already exists on the service, the already-existing file will be deleted.
- accessCondition
- AccessCondition
An AccessCondition object that represents the access conditions for the file. If null, no condition is used.
- options
- FileRequestOptions
A FileRequestOptions object that specifies additional options for the request.
- operationContext
- OperationContext
An OperationContext object that represents the context for the current operation.
Returns
A Task<TResult> object that represents the current operation.
- Attributes
Applies to
OpenWriteAsync(Nullable<Int64>, AccessCondition, FileRequestOptions, OperationContext, CancellationToken)
Returns a task that performs an asynchronous operation to open a stream for writing to the file. If the file already exists, then existing data in the file may be overwritten.
[Microsoft.Azure.Storage.DoesServiceRequest]
public virtual System.Threading.Tasks.Task<Microsoft.Azure.Storage.File.CloudFileStream> OpenWriteAsync (long? size, Microsoft.Azure.Storage.AccessCondition accessCondition, Microsoft.Azure.Storage.File.FileRequestOptions options, Microsoft.Azure.Storage.OperationContext operationContext, System.Threading.CancellationToken cancellationToken);[<Microsoft.Azure.Storage.DoesServiceRequest>]
abstract member OpenWriteAsync : Nullable<int64> * Microsoft.Azure.Storage.AccessCondition * Microsoft.Azure.Storage.File.FileRequestOptions * Microsoft.Azure.Storage.OperationContext * System.Threading.CancellationToken -> System.Threading.Tasks.Task<Microsoft.Azure.Storage.File.CloudFileStream>
override this.OpenWriteAsync : Nullable<int64> * Microsoft.Azure.Storage.AccessCondition * Microsoft.Azure.Storage.File.FileRequestOptions * Microsoft.Azure.Storage.OperationContext * System.Threading.CancellationToken -> System.Threading.Tasks.Task<Microsoft.Azure.Storage.File.CloudFileStream>Public Overridable Function OpenWriteAsync (size As Nullable(Of Long), accessCondition As AccessCondition, options As FileRequestOptions, operationContext As OperationContext, cancellationToken As CancellationToken) As Task(Of CloudFileStream)Parameters
The size of the file to create, in bytes, or null. If null, the file must already exist. If not null, a new file of the given size will be created. If size is not null but the file already exists on the service, the already-existing file will be deleted.
- accessCondition
- AccessCondition
An AccessCondition object that represents the access conditions for the file. If null, no condition is used.
- options
- FileRequestOptions
A FileRequestOptions object that specifies additional options for the request.
- operationContext
- OperationContext
An OperationContext object that represents the context for the current operation.
- cancellationToken
- CancellationToken
A CancellationToken to observe while waiting for a task to complete.
Returns
A Task<TResult> object that represents the current operation.
- Attributes
