Gets or sets a Boolean value that indicates whether asynchronous processing is allowed by the connection created by using this connection string.
Assembly: System.Data (in System.Data.dll)
This property corresponds to the "Asynchronous Processing" and "async" keys within the connection string. In order to take advantage of the asynchronous processing provided by the SqlCommand object, this key/value pair must be included within the connection string of the associated SqlConnection object.
The following example retrieves a connection string and verifies that the connection string is configured to allow for asynchronous processing. (In this case, the string comes from a procedure within the application, but in a production application, the connection string might come from a configuration file, or some other source.) Then, the example performs an asynchronous operation, updating values within a sample database on a background thread.
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.