以编程方式创建按钮

Question

简单的语法问题.在VS2010上编程silverlight 4.我在xaml中创建了一个按钮样式:

<UserControl.Resources>
    <Style x:Key ="TestbuttonStyle" TargetType="Button">
        <Setter Property="Width" Value="150"></Setter>
        <Setter Property="Margin" Value="0,0,0,10"></Setter>
        <Setter Property="ContentTemplate">
            <Setter.Value>
                <DataTemplate>
                    <StackPanel Orientation="Horizontal" HorizontalAlignment="Left">
                        <Image Source="http://i40.tinypic.com/j5k1kw.jpg" Height="20" Width="20"  Margin="-30,0,0,0"></Image>
                        <TextBlock Text="sampleuser&#13;sample number" Margin="5,0,0,0"></TextBlock>
                    </StackPanel>
                </DataTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</UserControl.Resources>

我需要在后面的代码中创建一个按钮,但使用这种风格.我尝试过像这样的东西:

        Button btn = new Button();
        //btn.Style = {TestbuttonStyle};  -what do i put  here?
        grid.children.add(btn);

如何应用样式并添加到我的usercontrol网格？

Answer 1

最初我以为你在使用WPF.然后我意识到它是关于Silverlight的,它没有分别类似于WPF的FindResource或TryFindResource的分层资源查找辅助方法.

但是,在互联网上快速搜索放弃了这篇文章,它描述了一个很好的扩展方法,你可以使用:

public static object TryFindResource(this FrameworkElement element, object resourceKey)
{
    var currentElement = element;

    while (currentElement != null)
    {
        var resource = currentElement.Resources[resourceKey];
        if (resource != null)
        {
            return resource;
        }

        currentElement = currentElement.Parent as FrameworkElement;
    }

    return Application.Current.Resources[resourceKey];
}

然后你可以像这样使用它:

btn.Style = (Style)this.TryFindResource("TestbuttonStyle");