我正在編寫我的第一個針對WinRT的自定義用戶控件,並且遇到了問題。在Windows 8中編寫自定義控件Metro
我想公開一個圖像,PART_NwBadge,它是我的控件中依賴屬性的可見性。然後我想通過樣式中的setter提供默認值。這部分不起作用。相反,DependencyProperty(在BadgedButton.cs中)的默認值正在被應用。
它甚至可以做我所描述的嗎?或者我應該在C#代碼中設置默認值?如果我確實需要在C#代碼中設置值,那麼有人會評論如何在代碼中加載圖像資源嗎?經過大量的搜索後,我還沒有找到可行的解決方案。
最後,由於這是我第一次認真地嘗試編寫自定義控件,請提出我可以做出的任何改進,即使它們與問題沒有直接關係。
的Windows 8消費者預覽版
C#/的WinRT /地鐵
的Visual Studio 11 Beta版
主題/ Generic.xaml
<ResourceDictionary
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:l="using:InkSdkTestApplication.Controls">
<Style TargetType="l:BadgedButton">
<Setter Property="Width" Value="36"/>
<Setter Property="Height" Value="36"/>
<Setter Property="Background" Value="#1C1C1C"/>
<Setter Property="BorderBrush" Value="White"/>
<Setter Property="BorderThickness" Value="2"/>
<Setter Property="NwBadge">
<Setter.Value>
<Image Width="16" Height="16" Source="../Assets/mouse_16x16.png"/>
</Setter.Value>
</Setter>
<Setter Property="NwBadgeVisibility" Value="Collapsed"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="l:BadgedButton">
<Border x:Name="PART_Border"
Width="{TemplateBinding Width}"
Height="{TemplateBinding Height}"
Background="{TemplateBinding Background}"
BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}">
<Grid>
<ContentPresenter x:Name="PART_Content"
HorizontalAlignment="Center"
VerticalAlignment="Center"
Content="{TemplateBinding Content}"/>
<Image x:Name="PART_NwBadge"
HorizontalAlignment="Left"
VerticalAlignment="Top"
Width="16" Height="16"
Visibility="{TemplateBinding NwBadgeVisibility}"
Source="{TemplateBinding NwBadge}"/>
</Grid>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ResourceDictionary>
控制/ BadgedButton.cs
namespace InkSdkTestApplication.Controls
{
public sealed class BadgedButton : Control
{
#region // Dependency Properties
public static DependencyProperty ContentProperty =
DependencyProperty.Register(
"Content",
typeof(FrameworkElement),
typeof(BadgedButton),
new PropertyMetadata(null));
public static DependencyProperty NwBadgeProperty =
DependencyProperty.Register(
"NwBadge",
typeof(Image),
typeof(BadgedButton),
new PropertyMetadata(null));
public static DependencyProperty NwBadgeVisibilityProperty =
DependencyProperty.Register(
"NwBadgeVisibility",
typeof(Visibility),
typeof(BadgedButton),
new PropertyMetadata(Visibility.Visible));
#endregion
#region // Public Properties
public FrameworkElement Content
{
get { return (FrameworkElement)GetValue(ContentProperty); }
set { SetValue(ContentProperty, value); }
}
public Image NwBadge
{
get { return (Image)GetValue(NwBadgeProperty); }
set { SetValue(NwBadgeProperty, value); }
}
public Visibility NwBadgeVisibility
{
get { return (Visibility)GetValue(NwBadgeVisibilityProperty); }
set { SetValue(NwBadgeVisibilityProperty, value); }
}
#endregion
public BadgedButton()
{
this.DefaultStyleKey = typeof(BadgedButton);
}
}
}
我可以建議不寫一個自定義控件嗎?只需創建一個帶有綁定的普通模板? – 2012-04-20 03:46:02