RepeatButtonSample.xaml

<StackPanel x:Name="LayoutRoot"
            Background="White">
    <TextBlock FontFamily="Segoe UI Light">
        <Run Text="RepeatButton Sample  "
             FontSize="20" />
        <Run Text="(Silverlight)"
             FontSize="16" />
    </TextBlock>

    <StackPanel Orientation="Horizontal">
        <RepeatButton Content="長押ししてみよう"
                      Delay="{Binding ElementName=DelaySlider, Path=Value}"
                      Interval="{Binding ElementName=IntervalSlider, Path=Value}"
                      Padding="20,5"
                      Margin="10,5"
                      VerticalAlignment="Center"
                      Click="Click" />
        <TextBlock Margin="10,0"
                   VerticalAlignment="Center">
            <Run Text="Count: " />
            <Run x:Name="Counter"
                 Text="0" />
        </TextBlock>
    </StackPanel>

    <Grid Margin="6,5"
          HorizontalAlignment="Left">
        <Grid.RowDefinitions>
            <RowDefinition />
            <RowDefinition />
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition />
            <ColumnDefinition />
        </Grid.ColumnDefinitions>

        <TextBlock VerticalAlignment="Center"
                   Margin="4">
            <Run Text="Delay: " />
            <Run>
                <Run.Text>
                    <Binding ElementName="DelaySlider"
                             Path="Value"
                             StringFormat="{}{0:0}"/>
                </Run.Text>
            </Run>
        </TextBlock>
        <Slider x:Name="DelaySlider"
                Grid.Column="0"
                Grid.Row="1"
                Width="150"
                Margin="0,0,30,0"
                Maximum="2000"
                SmallChange="100"
                LargeChange="250"
                Value="500" />

        <TextBlock Grid.Column="1"
                   Grid.Row="0"
                   VerticalAlignment="Center"
                   Margin="4">
            <Run Text="Interval: " />
            <Run>
                <Run.Text>
                    <Binding ElementName="IntervalSlider"
                             Path="Value"
                             StringFormat="{}{0:0}" />
                </Run.Text>
            </Run>
        </TextBlock>
        <Slider x:Name="IntervalSlider"
                Grid.Column="1"
                Grid.Row="1"
                Width="150"
                Margin="0,0,30,0"
                Maximum="500"
                SmallChange="100"
                LargeChange="250"
                Value="33" />
    </Grid>
</StackPanel>

ToggleButtonSample.xaml.cs

public partial class RepeatButtonSample
{
    private int count;

    public RepeatButtonSample()
    {
        InitializeComponent();
    }

    private void Click(object sender, RoutedEventArgs e)
    {
        this.Counter.Text = (++this.count).ToString();
    }
}