[英]Modify Properties inside a Style programmatically
我在UserControl的資源中定義了以下樣式:
<Style x:Key="MenuItemButton" TargetType="Button">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Border Width="40" Height="40" Background="{TemplateBinding Background}" BorderBrush="Transparent" BorderThickness="1,1,1,1" CornerRadius="3">
<ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
<Setter Property="Button.Foreground" Value="#666666" />
<Setter Property="Button.Background" Value="Transparent" />
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Button.Cursor" Value="Hand" />
<Setter Property="Button.Foreground" Value="White" />
<Setter Property="Button.Background" Value="#666666" />
</Trigger>
</Style.Triggers>
</Style>
例如,我使用它如下:
<Button Click="Toolbar_DocumentMarkup_Click" Name="BtnUnderline" Margin="10,0,0,0" Style="{StaticResource MenuItemButton}">
<fa:FontAwesome VerticalAlignment="Center" Icon="Underline" FontSize="24"/>
</Button>
我需要從后面的代碼以編程方式設置邊框的寬度和高度,以便在運行時更新視圖。
到目前為止我嘗試了什么 :
通過參考資料訪問該樣式:
var style = Resources["MenuItemButton"] as Style
但我在這個樣式對象中找不到合適的屬性。
另一個想法:
將寬度和高度定義為DependencyProperties或實現INotifyPropertyChanged,但我認為在我的情況下,以編程方式設置這兩個值要容易得多。
關於這個問題的一些意見或建議?
將此添加到您的資源:
<sys:Double x:Key="ButtonHeight">200</sys:Double>
<sys:Double x:Key="ButtonWidth">200</sys:Double>
<Style x:Key="MenuItemButton" TargetType="Button">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Border Width="40" Height="40" Background="{TemplateBinding Background}" BorderBrush="Transparent" BorderThickness="1,1,1,1" CornerRadius="3">
<ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
<Setter Property="Height" Value="{DynamicResource ButtonHeight}" />
<Setter Property="Width" Value="{DynamicResource ButtonWidth}" />
<Setter Property="Button.Foreground" Value="#666666" />
<Setter Property="Button.Background" Value="Transparent" />
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Button.Cursor" Value="Hand" />
<Setter Property="Button.Foreground" Value="White" />
<Setter Property="Button.Background" Value="#666666" />
</Trigger>
</Style.Triggers>
然后在您的代碼后面使用以下代碼更改它:
this.Resources["ButtonHeight"] = ...
和
this.Resources["ButtonWidth"] = ...
編輯:忘了你當然需要添加系統路徑
xmlns:sys="clr-namespace:System;assembly=mscorlib"
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