BeginExecuteReader(AsyncCallback, Object) method

Initiates the asynchronous execution of a SQL statement that is described by this SA Command, and retrieves the result set, given a callback procedure and state information.

Syntax 
Visual Basic

Public Function BeginExecuteReader( _
   ByVal callback As AsyncCallback, _
   ByVal stateObject As Object _
) As IAsyncResult
C#

public IAsyncResult BeginExecuteReader(
   AsyncCallback callback,
   object stateObject
);
Parameters

  • callback   An [external link] 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 [external link] IAsyncResult.AsyncState.

Return value

An [external link] 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.

See also
Copyright © 2008, iAnywhere Solutions, Inc. - SQL Anywhere 11.0.0