为什么这个事件不能正常工作？

Question

我的代码中有两个超链接包含图像，当我清除第二个第一个工作但是当他们两个写这样的时候btnClose工作为btnnew。它意味着事件（btnAdd_Click）适用于他们两个，我不知道为什么

<HyperlinkButton   x:Name="btnClose"  Click="btnClose_Click"> 
    <HyperlinkButton.RenderTransform>
        <TranslateTransform />
    </HyperlinkButton.RenderTransform>
    <Canvas>
        <Image     Source="/ITStock;component/Images/undo.png"  Height="20" Width="20"Margin="10,5,0,0"/>
    </Canvas>
</HyperlinkButton>   
<HyperlinkButton  x:Name="btnNew" Click="btnAdd_Click" >
    <HyperlinkButton.RenderTransform>
        <TranslateTransform   /> 
    </HyperlinkButton.RenderTransform>
    <Canvas>
        <Image  Source="/ITStock;component/Images/edit_add.png"  Height="20" Width="20"  Margin="45,5,0,0"/>
    </Canvas>
</HyperlinkButton>


private void btnClose_Click(object sender, RoutedEventArgs e)
{ 
    HtmlPage.Window.Invoke("OpenMainPage"); 
}

private void btnAdd_Click(object sender, RoutedEventArgs e)
{ 
    stock = new SR_BLStock.Stock();
    if (stock != null)
    { 
        dgStock1.RowDetailsVisibilityMode = DataGridRowDetailsVisibilityMode.Collapsed;
        Grid grUsc = new Grid();
        grUsc.Margin = new Thickness(50);
        Border b = new Border(); 
        b.Name = "uscBorder"; 
        b.Background = new SolidColorBrush(Colors.Black); 
        b.Opacity = 0.6; 
        NewStock usc = new NewStock(stock); 
        dgStock1.IsEnabled = false; 
        dg.IsEnabled = false; 
        grUsc.Children.Add(usc); 
        LayoutRoot.Children.Add(grUsc);
    } 
}