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) { BigQueryConnection bigQueryConn = new BigQueryConnection( @"Authentication Type=ServiceAccount;ServiceAccount Json=C:\keys\service-account.json;Project Id=your_project;DataSet Id=your_dataset;License Key=*********"); BigQueryMonitor bigQueryMonitor = new BigQueryMonitor(); bigQueryMonitor.TraceEvent += new MonitorEventHandler(OnEvent); bigQueryMonitor.IsActive = true; BigQueryCommand bigQueryCommand = new BigQueryCommand("select count() from your_project.your_dataset.employees",bigQueryConn); bigQueryConn.Open(); Console.WriteLine(bigQueryCommand.ExecuteScalar()); bigQueryConn.Close(); bigQueryMonitor.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)
{
  BigQueryConnection bigQueryConn = new BigQueryConnection(
      @"Authentication Type=ServiceAccount;ServiceAccount Json=C:\keys\service-account.json;Project Id=your_project;DataSet Id=your_dataset;License Key=**********");
  BigQueryMonitor bigQueryMonitor = new BigQueryMonitor();
  bigQueryMonitor.TraceEvent += new MonitorEventHandler(OnEvent);
  bigQueryMonitor.IsActive = true;
  BigQueryCommand bigQueryCommand = new BigQueryCommand("select count(*) from your_project.your_dataset.employees",bigQueryConn);
  bigQueryConn.Open();
  Console.WriteLine(bigQueryCommand.ExecuteScalar());
  bigQueryConn.Close();
  bigQueryMonitor.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 bigQueryConn As BigQueryConnection = New BigQueryConnection( _ "Authentication Type=ServiceAccount;ServiceAccount Json=C:\keys\service-account.json;Project Id=your_project;DataSet Id=your_dataset;License Key=*********") Dim bigQueryMonitor As BigQueryMonitor = New BigQueryMonitor AddHandler bigQueryMonitor.TraceEvent, AddressOf OnEvent bigQueryMonitor.IsActive = True Dim bigQueryCommand As BigQueryCommand = New BigQueryCommand("select count() from your_project.your_dataset.employees", bigQueryConn) bigQueryConn.Open() Console.WriteLine(bigQueryCommand.ExecuteScalar()) bigQueryConn.Close() RemoveHandler bigQueryMonitor.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 bigQueryConn As BigQueryConnection = New BigQueryConnection( _
      "Authentication Type=ServiceAccount;ServiceAccount Json=C:\keys\service-account.json;Project Id=your_project;DataSet Id=your_dataset;License Key=**********")
  Dim bigQueryMonitor As BigQueryMonitor = New BigQueryMonitor
  AddHandler bigQueryMonitor.TraceEvent, AddressOf OnEvent
  bigQueryMonitor.IsActive = True
  Dim bigQueryCommand As BigQueryCommand = New BigQueryCommand("select count(*) from your_project.your_dataset.employees", bigQueryConn)
  bigQueryConn.Open()
  Console.WriteLine(bigQueryCommand.ExecuteScalar())
  bigQueryConn.Close()
  RemoveHandler bigQueryMonitor.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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