DbConnection.BeginDbTransactionAsync Method
Definition
Important
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Asynchronously starts a database transaction.
protected:
virtual System::Threading::Tasks::ValueTask<System::Data::Common::DbTransaction ^> BeginDbTransactionAsync(System::Data::IsolationLevel isolationLevel, System::Threading::CancellationToken cancellationToken);protected virtual System.Threading.Tasks.ValueTask<System.Data.Common.DbTransaction> BeginDbTransactionAsync (System.Data.IsolationLevel isolationLevel, System.Threading.CancellationToken cancellationToken);abstract member BeginDbTransactionAsync : System.Data.IsolationLevel * System.Threading.CancellationToken -> System.Threading.Tasks.ValueTask<System.Data.Common.DbTransaction>
override this.BeginDbTransactionAsync : System.Data.IsolationLevel * System.Threading.CancellationToken -> System.Threading.Tasks.ValueTask<System.Data.Common.DbTransaction>Protected Overridable Function BeginDbTransactionAsync (isolationLevel As IsolationLevel, cancellationToken As CancellationToken) As ValueTask(Of DbTransaction)Parameters
- isolationLevel
- IsolationLevel
One of the enumeration values that specifies the isolation level for the transaction to use.
- cancellationToken
- CancellationToken
A token to cancel the asynchronous operation.
Returns
A task whose Result property is an object representing the new transaction.
Exceptions
The cancellation token was canceled. This exception is stored into the returned task.
Remarks
The default implementation of this asynchronous method delegates to its synchronous counterpart and returns a completed Task, potentially blocking the calling thread.
Data providers that support asynchronous programming should override the default implementation using asynchronous I/O operations.
This method stores in the task it returns all non-usage exceptions that the method's synchronous counterpart can throw. If an exception is stored into the returned task, that exception will be thrown when the task is awaited. Usage exceptions, such as ArgumentException, are still thrown synchronously. For the stored exceptions, see the exceptions thrown by BeginDbTransaction(IsolationLevel).
