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BeginExecuteReader(AsyncCallback, Object, CommandBehavior) method

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.

• SACommand class
• SACommand members
• BeginExecuteReader methods
• EndExecuteReader method
• SADataReader class