MonitorEventArgs Class

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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) { DB2Connection db2Conn = new DB2Connection( "user id=db2admin;server=db2;database=SAMPLE;"); DB2Monitor db2Monitor = new DB2Monitor(); db2Monitor.TraceEvent += new MonitorEventHandler(OnEvent); db2Monitor.IsActive = true; DB2Command db2Command = new DB2Command("select count(*) from Dept",db2Conn); db2Conn.Open(); Console.WriteLine(db2Command.ExecuteScalar()); db2Conn.Close(); db2Monitor.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)
{
  DB2Connection db2Conn = new DB2Connection(
      "user id=db2admin;server=db2;database=SAMPLE;");
  DB2Monitor db2Monitor = new DB2Monitor();
  db2Monitor.TraceEvent += new MonitorEventHandler(OnEvent);
  db2Monitor.IsActive = true;
  DB2Command db2Command = new DB2Command("select count(*) from Dept",db2Conn);
  db2Conn.Open();
  Console.WriteLine(db2Command.ExecuteScalar());
  db2Conn.Close();
  db2Monitor.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 db2Conn As DB2Connection = New DB2Connection( _ "user id=db2admin;server=db2;database=SAMPLE;") Dim db2Monitor As DB2Monitor = New DB2Monitor AddHandler db2Monitor.TraceEvent, AddressOf OnEvent db2Monitor.IsActive = True Dim db2Command As DB2Command = New DB2Command("select count(*) from Dept", db2Conn) db2Conn.Open() Console.WriteLine(db2Command.ExecuteScalar()) db2Conn.Close() RemoveHandler db2Monitor.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 db2Conn As DB2Connection = New DB2Connection( _
      "user id=db2admin;server=db2;database=SAMPLE;")
  Dim db2Monitor As DB2Monitor = New DB2Monitor
  AddHandler db2Monitor.TraceEvent, AddressOf OnEvent
  db2Monitor.IsActive = True
  Dim db2Command As DB2Command = New DB2Command("select count(*) from Dept", db2Conn)
  db2Conn.Open()
  Console.WriteLine(db2Command.ExecuteScalar())
  db2Conn.Close()
  RemoveHandler db2Monitor.TraceEvent, AddressOf OnEvent
  Console.ReadLine()
End Sub

Inheritance Hierarchy

System.Object
System.EventArgs
Devart.Common.MonitorEventArgs

Reference

MonitorEventArgs Members
Devart.Common Namespace

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