MonitorEventHandler Delegate
Represents the method that will handle the
TraceEvent event of the
DbMonitor class.
The following sample shows how to enable and disable monitoring of database activity in your application.
static void OnEvent(object sender, MonitorEventArgs e)
{
if (e.TracePoint==MonitorTracePoint.BeforeEvent)
{
Console.WriteLine("Description: " + e.Description);
Console.WriteLine(" Extra info: " + e.ExtraInfo);
}
}
[MTAThread]
static void Main(string[] args)
{
PgSqlConnection pgConn = new PgSqlConnection(
"host=server;database=test;user id=postgres;");
PgSqlMonitor pgMonitor = new PgSqlMonitor();
pgMonitor.TraceEvent += new MonitorEventHandler(OnEvent);
pgMonitor.IsActive = true;
PgSqlCommand pgCommand = new PgSqlCommand("select count(*) from Test.Dept",pgConn);
pgConn.Open();
Console.WriteLine(pgCommand.ExecuteScalar());
pgConn.Close();
pgMonitor.TraceEvent -= new MonitorEventHandler(OnEvent);
Console.ReadLine();
}
Sub OnEvent(ByVal sender As Object, ByVal e As MonitorEventArgs)
If e.TracePoint = MonitorTracePoint.BeforeEvent Then
Console.WriteLine("Description: " & e.Description)
Console.WriteLine(" Extra info: " & e.ExtraInfo)
End If
End Sub
<MTAThread()> _
Sub Main()
Dim pgConn As PgSqlConnection = New PgSqlConnection( _
"host=server;database=test;user id=postgres;")
Dim pgMonitor As PgSqlMonitor = New PgSqlMonitor
AddHandler pgMonitor.TraceEvent, AddressOf OnEvent
pgMonitor.IsActive = True
Dim pgCommand As PgSqlCommand = New PgSqlCommand("select count(*) from Test.Dept", pgConn)
pgConn.Open()
Console.WriteLine(pgCommand.ExecuteScalar())
pgConn.Close()
RemoveHandler pgMonitor.TraceEvent, AddressOf OnEvent
Console.ReadLine()
End Sub
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2