MonitorEventArgs Class

On this page

Provides data for the TraceEvent event of the DbMonitor class.

Syntax

Visual Basic
C#


'Declaration Public Class MonitorEventArgs Inherits System.EventArgs


public class MonitorEventArgs : System.EventArgs

Remarks

The TraceEvent event occurs when DbMonitor object is active and the monitoring application performs any SQL activity.

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) { MongoDBConnection mongoDBConn = new MongoDBConnection( "Host=localhost;Port=27017;Database=sample;User Id=user;Password=pwd;"); MongoDBMonitor mongoDBMonitor = new MongoDBMonitor(); mongoDBMonitor.TraceEvent += new MonitorEventHandler(OnEvent); mongoDBMonitor.IsActive = true; MongoDBCommand mongoDBCommand = new MongoDBCommand("select count(*) from emp",mongoDBConn); mongoDBConn.Open(); Console.WriteLine(mongoDBCommand.ExecuteScalar()); mongoDBConn.Close(); mongoDBMonitor.TraceEvent -= new MonitorEventHandler(OnEvent); Console.ReadLine(); }

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)
{
  MongoDBConnection mongoDBConn = new MongoDBConnection(
      "Host=localhost;Port=27017;Database=sample;User Id=user;Password=pwd;");
  MongoDBMonitor mongoDBMonitor = new MongoDBMonitor();
  mongoDBMonitor.TraceEvent += new MonitorEventHandler(OnEvent);
  mongoDBMonitor.IsActive = true;
  MongoDBCommand mongoDBCommand = new MongoDBCommand("select count(*) from emp",mongoDBConn);
  mongoDBConn.Open();
  Console.WriteLine(mongoDBCommand.ExecuteScalar());
  mongoDBConn.Close();
  mongoDBMonitor.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 mongoDBConn As MongoDBConnection = New MongoDBConnection( _ "Host=localhost;Port=27017;Database=sample;User Id=user;Password=pwd;") Dim mongoDBMonitor As MongoDBMonitor = New MongoDBMonitor AddHandler mongoDBMonitor.TraceEvent, AddressOf OnEvent mongoDBMonitor.IsActive = True Dim mongoDBCommand As MongoDBCommand = New MongoDBCommand("select count(*) from emp", mongoDBConn) mongoDBConn.Open() Console.WriteLine(mongoDBCommand.ExecuteScalar()) mongoDBConn.Close() RemoveHandler mongoDBMonitor.TraceEvent, AddressOf OnEvent Console.ReadLine() End Sub

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 mongoDBConn As MongoDBConnection = New MongoDBConnection( _
      "Host=localhost;Port=27017;Database=sample;User Id=user;Password=pwd;")
  Dim mongoDBMonitor As MongoDBMonitor = New MongoDBMonitor
  AddHandler mongoDBMonitor.TraceEvent, AddressOf OnEvent
  mongoDBMonitor.IsActive = True
  Dim mongoDBCommand As MongoDBCommand = New MongoDBCommand("select count(*) from emp", mongoDBConn)
  mongoDBConn.Open()
  Console.WriteLine(mongoDBCommand.ExecuteScalar())
  mongoDBConn.Close()
  RemoveHandler mongoDBMonitor.TraceEvent, AddressOf OnEvent
  Console.ReadLine()
End Sub

Inheritance Hierarchy

System.Object
System.EventArgs
Devart.Common.MonitorEventArgs

Reference

MonitorEventArgs Members
Devart.Common Namespace

Send Feedback