Initiates the asynchronous execution of a SQL statement or stored procedure that is described by this SACommand, and retrieves one or more result sets from the server.
Visual Basic Public Function BeginExecuteReader( _ ByVal callback As AsyncCallback, _ ByVal stateObject As Object, _ ByVal behavior As CommandBehavior _ ) As IAsyncResult
C# public IAsyncResult BeginExecuteReader( AsyncCallback callback, object stateObject, CommandBehavior behavior );
callback An AsyncCallback delegate that is invoked when the command's execution has completed. Pass null (Nothing in Microsoft Visual Basic) to indicate that no callback is required.
stateObject A user-defined state object that is passed to the callback procedure. Retrieve this object from within the callback procedure using the IAsyncResult.AsyncState.
behavior A bitwise combination of CommandBehavior flags describing the results of the query and its effect on the connection.
An IAsyncResult that can be used to poll, wait for results, or both; this value is also needed when invoking EndExecuteReader(IAsyncResult), which returns an SADataReader object that can be used to retrieve the returned rows.
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