Begins an asynchronous operation to create an empty append blob. If the blob already exists, this operation will overwrite it. To throw an exception if the blob exists, instead of overwriting, pass in an AccessCondition object generated using GenerateIfNotExistsCondition.
Assembly: Microsoft.WindowsAzure.Storage (in Microsoft.WindowsAzure.Storage.dll)
Syntax
[DoesServiceRequestAttribute] public virtual ICancellableAsyncResult BeginCreateOrReplace( AccessCondition accessCondition, BlobRequestOptions options, OperationContext operationContext, AsyncCallback callback, object state )
public: [DoesServiceRequestAttribute] virtual ICancellableAsyncResult^ BeginCreateOrReplace( AccessCondition^ accessCondition, BlobRequestOptions^ options, OperationContext^ operationContext, AsyncCallback^ callback, Object^ state )
[<DoesServiceRequestAttribute>] abstract BeginCreateOrReplace : accessCondition:AccessCondition * options:BlobRequestOptions * operationContext:OperationContext * callback:AsyncCallback * state:Object -> ICancellableAsyncResult [<DoesServiceRequestAttribute>] override BeginCreateOrReplace : accessCondition:AccessCondition * options:BlobRequestOptions * operationContext:OperationContext * callback:AsyncCallback * state:Object -> ICancellableAsyncResult
<DoesServiceRequestAttribute> Public Overridable Function BeginCreateOrReplace ( accessCondition As AccessCondition, options As BlobRequestOptions, operationContext As OperationContext, callback As AsyncCallback, state As Object ) As ICancellableAsyncResult
Parameters
- accessCondition
-
Type:
Microsoft.WindowsAzure.Storage.AccessConditionMicrosoft.WindowsAzure.Storage::AccessCondition^Microsoft.WindowsAzure.Storage.AccessConditionMicrosoft.WindowsAzure.Storage.AccessCondition
An AccessCondition object that represents the condition that must be met in order for the request to proceed. If null, no condition is used.
- options
-
Type:
Microsoft.WindowsAzure.Storage.Blob.BlobRequestOptionsMicrosoft.WindowsAzure.Storage.Blob::BlobRequestOptions^Microsoft.WindowsAzure.Storage.Blob.BlobRequestOptionsMicrosoft.WindowsAzure.Storage.Blob.BlobRequestOptions
A BlobRequestOptions object that specifies additional options for the request.
- operationContext
-
Type:
Microsoft.WindowsAzure.Storage.OperationContextMicrosoft.WindowsAzure.Storage::OperationContext^Microsoft.WindowsAzure.Storage.OperationContextMicrosoft.WindowsAzure.Storage.OperationContext
An OperationContext object that represents the context for the current operation.
- callback
-
Type:
System.AsyncCallbackSystem::AsyncCallback^System.AsyncCallbackSystem.AsyncCallback
An AsyncCallback delegate that will receive notification when the asynchronous operation completes.
- state
-
Type:
System.ObjectSystem::Object^System.ObjectSystem.Object
A user-defined object that will be passed to the callback delegate.
Return Value
Type: Microsoft.WindowsAzure.Storage.ICancellableAsyncResultMicrosoft.WindowsAzure.Storage::ICancellableAsyncResult^Microsoft.WindowsAzure.Storage.ICancellableAsyncResultMicrosoft.WindowsAzure.Storage.ICancellableAsyncResultAn ICancellableAsyncResult that references the asynchronous operation.
See Also
BeginCreateOrReplace Overload
CloudAppendBlob Class
Microsoft.WindowsAzure.Storage.Blob Namespace