CloudFile.BeginOpenWrite Method

  • Reference

Definition

Namespace:
Microsoft.Azure.Storage.File
Assembly:
Microsoft.Azure.Storage.File.dll
Package:
Microsoft.Azure.Storage.File v11.2.3

Overloads

BeginOpenWrite(Nullable<Int64>, AccessCondition, FileRequestOptions, OperationContext, AsyncCallback, Object)

Begins 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.
BeginOpenWrite(Nullable<Int64>, AsyncCallback, Object)

Begins 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.

BeginOpenWrite(Nullable<Int64>, AccessCondition, FileRequestOptions, OperationContext, AsyncCallback, Object)

Begins 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 Microsoft.Azure.Storage.ICancellableAsyncResult BeginOpenWrite (long? size, Microsoft.Azure.Storage.AccessCondition accessCondition, Microsoft.Azure.Storage.File.FileRequestOptions options, Microsoft.Azure.Storage.OperationContext operationContext, AsyncCallback callback, object state);
[<Microsoft.Azure.Storage.DoesServiceRequest>]
abstract member BeginOpenWrite : Nullable<int64> * Microsoft.Azure.Storage.AccessCondition * Microsoft.Azure.Storage.File.FileRequestOptions * Microsoft.Azure.Storage.OperationContext * AsyncCallback * obj -> Microsoft.Azure.Storage.ICancellableAsyncResult
override this.BeginOpenWrite : Nullable<int64> * Microsoft.Azure.Storage.AccessCondition * Microsoft.Azure.Storage.File.FileRequestOptions * Microsoft.Azure.Storage.OperationContext * AsyncCallback * obj -> Microsoft.Azure.Storage.ICancellableAsyncResult
Public Overridable Function BeginOpenWrite (size As Nullable(Of Long), accessCondition As AccessCondition, options As FileRequestOptions, operationContext As OperationContext, callback As AsyncCallback, state As Object) As ICancellableAsyncResult

Parameters

size
Nullable<Int64>

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.

callback
AsyncCallback

The callback delegate that will receive notification when the asynchronous operation completes.

state
Object

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

Returns

ICancellableAsyncResult

An ICancellableAsyncResult that references the asynchronous operation.

Attributes
DoesServiceRequestAttribute

Applies to

BeginOpenWrite(Nullable<Int64>, AsyncCallback, Object)

Begins 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 Microsoft.Azure.Storage.ICancellableAsyncResult BeginOpenWrite (long? size, AsyncCallback callback, object state);
[<Microsoft.Azure.Storage.DoesServiceRequest>]
abstract member BeginOpenWrite : Nullable<int64> * AsyncCallback * obj -> Microsoft.Azure.Storage.ICancellableAsyncResult
override this.BeginOpenWrite : Nullable<int64> * AsyncCallback * obj -> Microsoft.Azure.Storage.ICancellableAsyncResult
Public Overridable Function BeginOpenWrite (size As Nullable(Of Long), callback As AsyncCallback, state As Object) As ICancellableAsyncResult

Parameters

size
Nullable<Int64>

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.

callback
AsyncCallback

The callback delegate that will receive notification when the asynchronous operation completes.

state
Object

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

Returns

ICancellableAsyncResult

An ICancellableAsyncResult that references the asynchronous operation.

Attributes
DoesServiceRequestAttribute

Applies to