TraceEvent Event

In This Topic

Occurs when DbMonitor object signals about some database activity.

Syntax

Visual Basic
C#

'Declaration
 
Public Event TraceEvent As MonitorEventHandler

public event MonitorEventHandler TraceEvent

Event Data

The event handler receives an argument of type MonitorEventArgs containing data related to this event. The following MonitorEventArgs properties provide information specific to this event.

Property	Description
CallStack	Gets the call stack of the monitor event.
Description	Gets the description of a DbMonitor event.
Duration	The time between the start and the end of the event.
EventType	Gets DbMonitor event type.
ExtraInfo	Gets the additional information for a DbMonitor event.
TracePoint	Determines whether TraceEvent event occurs before or after the operation takes place.

Example

The following sample shows how to enable and disable monitoring of database activity in your application.

csharp

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)
{
  MagentoConnection adobe commerceConn = new MagentoConnection(
      "domain=192.168.10.68/magento;user=Test;apikey=testpassword;");
  MagentoMonitor adobe commerceMonitor = new MagentoMonitor();
  adobe commerceMonitor.TraceEvent += new MonitorEventHandler(OnEvent);
  adobe commerceMonitor.IsActive = true;
  MagentoCommand adobe commerceCommand = new MagentoCommand("select count(*) from Customers",adobe commerceConn);
  adobe commerceConn.Open();
  Console.WriteLine(adobe commerceCommand.ExecuteScalar());
  adobe commerceConn.Close();
  adobe commerceMonitor.TraceEvent -= new MonitorEventHandler(OnEvent);
  Console.ReadLine();
}

Visual Basic

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 adobe commerceConn As MagentoConnection = New MagentoConnection( _
      "domain=192.168.10.68/magento;user=Test;apikey=testpassword;")
  Dim adobe commerceMonitor As MagentoMonitor = New MagentoMonitor
  AddHandler adobe commerceMonitor.TraceEvent, AddressOf OnEvent
  adobe commerceMonitor.IsActive = True
  Dim adobe commerceCommand As MagentoCommand = New MagentoCommand("select count(*) from Customers", adobe commerceConn)
  adobe commerceConn.Open()
  Console.WriteLine(adobe commerceCommand.ExecuteScalar())
  adobe commerceConn.Close()
  RemoveHandler adobe commerceMonitor.TraceEvent, AddressOf OnEvent
  Console.ReadLine()
End Sub

Reference

DbMonitor Class
DbMonitor Members

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