Visual CSharp .NET - convertir codigo

Imports System

Imports System.Data

Imports System.Math

Imports Microsoft.SqlServer.Dts.Runtime

 Dim eventLog As New Diagnostics.EventLog

        Dim text As String

       If Not eventLog.SourceExists(Dts.Variables("v_sourcename").Value.ToString) Then

            eventLog.CreateEventSource(Dts.Variables("v_sourcename").Value.ToString, "Application")

        End If

.net codigo c # 2008

lo traduje de esta forma

using System;

using System.Data;

using Microsoft.SqlServer.Dts.Runtime;

using System.Windows.Forms;

using System.Collections;

using System.Diagnostics;

 EventLog eventLog = new EventLog();

            String text;

if( ! eventLog.SourceExists(Dts.Variables["v_sourcename"].Value.ToString()) ){

            eventLog.CreateEventSource(Dts.Variables["v_sourcename"].Value.ToString(), "Application");

        }