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AdsConnection.StateChange Advantage .NET Data Provider |
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AdsConnection.StateChange Advantage .NET Data Provider |
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Occurs when the state of the AdsConnection object changes.
public event StateChangeEventHandler StateChange;
Remarks
You can use this event to detect when a connection object is opened or closed.
Event Data
The event handler receives an argument of type StateChangeEventArgs containing data related to this event. StateChangeEventArgs contains a CurrentState property that indicates the new state of the connection object and an OriginalState property that indicates the previous state.
Example
static void OnConnectionStateChange( object sender, StateChangeEventArgs args )
{
Console.WriteLine( "Original State: " + args.OriginalState.ToString() );
Console.WriteLine( "Current State: " + args.CurrentState.ToString() );
}
public static void StateChangeTest()
{
try
{
AdsConnection conn = new AdsConnection( "data source = c:\\data" );
conn.StateChange += new StateChangeEventHandler( OnConnectionStateChange );
// cause event to fire for the change from Closed to Open
conn.Open();
// ...
// cause event to fire for the change from Open to Closed
conn.Close();
}
catch (Exception e)
{
Console.WriteLine( e.Message );
}
}
See Also