'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.
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) { FreshBooksConnection freshbooksConn = new FreshBooksConnection( "API Version=Alpha;Access Token=3d3355b2beea67f9241400fbe28f0b116e3efd2f8a85dda3c35620acdc95cd60;Refresh Token=75836f50da63fc5bf81bb24598511ae131ea422e73d9f321b4c4a44e2dd1c67f;Company Name=Devart"); FreshBooksMonitor freshbooksMonitor = new FreshBooksMonitor(); freshbooksMonitor.TraceEvent += new MonitorEventHandler(OnEvent); freshbooksMonitor.IsActive = true; FreshBooksCommand freshbooksCommand = new FreshBooksCommand("select count(*) from Client",freshbooksConn); freshbooksConn.Open(); Console.WriteLine(freshbooksCommand.ExecuteScalar()); freshbooksConn.Close(); freshbooksMonitor.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 freshbooksConn As FreshBooksConnection = New FreshBooksConnection( _ "API Version=Alpha;Access Token=3d3355b2beea67f9241400fbe28f0b116e3efd2f8a85dda3c35620acdc95cd60;Refresh Token=75836f50da63fc5bf81bb24598511ae131ea422e73d9f321b4c4a44e2dd1c67f;Company Name=Devart") Dim freshbooksMonitor As FreshBooksMonitor = New FreshBooksMonitor AddHandler freshbooksMonitor.TraceEvent, AddressOf OnEvent freshbooksMonitor.IsActive = True Dim freshbooksCommand As FreshBooksCommand = New FreshBooksCommand("select count(*) from Client", freshbooksConn) freshbooksConn.Open() Console.WriteLine(freshbooksCommand.ExecuteScalar()) freshbooksConn.Close() RemoveHandler freshbooksMonitor.TraceEvent, AddressOf OnEvent Console.ReadLine() End Sub
Requirements
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
See Also