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DbConnection.ChangeDatabaseAsync(String, CancellationToken) Method


Asynchronously changes the current database for an open connection.

public virtual System.Threading.Tasks.Task ChangeDatabaseAsync (string databaseName, System.Threading.CancellationToken cancellationToken = default);
abstract member ChangeDatabaseAsync : string * System.Threading.CancellationToken -> System.Threading.Tasks.Task
override this.ChangeDatabaseAsync : string * System.Threading.CancellationToken -> System.Threading.Tasks.Task
Public Overridable Function ChangeDatabaseAsync (databaseName As String, Optional cancellationToken As CancellationToken = Nothing) As Task



The name of the database for the connection to use.


An optional token to cancel the asynchronous operation. The default value is None.


A task representing the asynchronous operation.


The cancellation token was canceled. This exception is stored into the returned task.


The value supplied in the databaseName parameter must be a valid database name for the current instance.

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 ChangeDatabase(String).

Applies to