C#

<Window x:Class="Styles.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="150" Width="525">
    <Window.Resources>
<Style x:Key="Poly1" TargetType="{x:Type Button}">
        	<Setter Property="Template">
        		<Setter.Value>
        			<ControlTemplate TargetType="{x:Type Button}">
        				<Grid>
                            <Polygon Fill="{TemplateBinding Background}"  Points="10,10 80,10 120,45 80,75 10,75 45,45" Stroke="{TemplateBinding BorderBrush}" StrokeThickness="2"/>
        					<ContentPresenter HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
        				</Grid>
        				<ControlTemplate.Triggers>
        					<Trigger Property="IsFocused" Value="True"/>
        					<Trigger Property="IsDefaulted" Value="True"/>
        					<Trigger Property="IsMouseOver" Value="True"/>
        					<Trigger Property="IsPressed" Value="True"/>
        					<Trigger Property="IsEnabled" Value="False"/>
        				</ControlTemplate.Triggers>
        			</ControlTemplate>
        		</Setter.Value>
        	</Setter>
        </Style>
</Window.Resources>
<WrapPanel>
        <Button Style="{DynamicResource Poly1}"></Button>
        <Button Style="{DynamicResource Poly1}"></Button>
 </WrapPanel>
</Window>

namespace WindowsService1
{
    public partial class ServiceName : ServiceBase
    {
        public ServiceName()
        {
            InitializeComponent();
            string sSource;
            string sLog;
            string sEvent;

            sSource = "MyServiceName";
            sLog = "Application";
            sEvent = "MyServiceName starting";

            if (!EventLog.SourceExists(sSource))
                EventLog.CreateEventSource(sSource, sLog);

            EventLog.WriteEntry(sSource, sEvent);// this works
          
EventLog sysLog = new EventLog("System", ".");
sysLog.EntryWritten += new EntryWrittenEventHandler(OnEntryWritten);
EventLog.WriteEntry(sSource, "logger started");// this works too

Console.WriteLine("Logger started");// nothing writes to console
       }       

        public void OnEntryWritten(object source, EntryWrittenEventArgs e)
        {
string sSource;
            string sLog;
            sSource = "MyServiceName";
            sLog = "Application";
            if (!EventLog.SourceExists(sSource))
                EventLog.CreateEventSource(sSource, sLog);
           EventLog.WriteEntry(sSource, "sqllogger started");//this  doesn't work

SqlConnection Conn = new SqlConnection("User id = x; password = y; server=z;database=dbname;connection timeout=30");
            SqlCommand ins = new SqlCommand("INSERT INTO dbo.TableName(TimeWritten, Source)VALUES (@TimeWritten, @Source)", Conn);
            ins.Parameters.Add("@TimeWritten", SqlDbType.DateTime);
            ins.Parameters.Add("@Source", SqlDbType.NVarChar, 20);

            ins.Parameters["@TimeWritten"].Value = e.Entry.TimeWritten;
            ins.Parameters["@Source"].Value = e.Entry.Source;

            TableName.Open();
            ins.ExecuteNonQuery();
            TableName.Close();// nothing written to db
        }