Key binding in <object property = "{StaticResource key}" ... / "> with value
In WPF, you can associate the key in "{StaticResource key}" with a variable.
For instance. I have an ExecutionState variable with the states Active and Completed .
In my ResourceDictionary I have
<Style TargetType="{x:Type TextBlock}" x:Key="Active">
<Setter Property="Foreground" Value="Yellow"/>
</Style>
<Style TargetType="{x:Type TextBlock}" x:Key="Completed">
<Setter Property="Foreground" Value="Green"/>
</Style>
Instead
<TextBlock Style="{StaticResource Active}"/>
I would like to have something like
<TextBlock Style="{StaticResource {Binding ExecutionState}}"/>
Thus, if the state changes the color of the text. Is something like this possible? I can achieve the desired functionality with triggers, but I have to reuse it in several places, and I don't want to clutter up my code. I also use MVVM.
thank
+3
2 answers
. . .
<TextBlock dep:CustomStyle.StyleName="{Binding ExecutionState}" Text="Thiru" />
public static class CustomStyle
{
static FrameworkPropertyMetadata _styleMetadata = new FrameworkPropertyMetadata(
string.Empty, FrameworkPropertyMetadataOptions.AffectsRender, StyleNamePropertyChangeCallBack);
public static readonly DependencyProperty StyleNameProperty =
DependencyProperty.RegisterAttached("StyleName", typeof (String), typeof (CustomStyle), _styleMetadata);
public static void SetStyleName(UIElement element, string value)
{
element.SetValue(StyleNameProperty, value);
}
public static Boolean GetStyleName(UIElement element)
{
return (Boolean)element.GetValue(StyleNameProperty);
}
public static void StyleNamePropertyChangeCallBack(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
FrameworkElement ctrl = d as FrameworkElement;
if (ctrl.IsLoaded)
{
string styleName = Convert.ToString(e.NewValue);
if (!string.IsNullOrEmpty(styleName))
{
ctrl.Style = ctrl.TryFindResource(styleName) as Style;
}
}
}
}
0