How to inherit XAML style and override property of child element?
The question
how to inherit XAML style and override some the property of the child element/
the problem
there is a very good question indeed, times are you need to define a base button that you want the derived classs to override.?
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This article is about the principle tha how you can override the style inherited from the base style.
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the solution
It is more a best practise/guide rather than the solutoin, there is a good artile on on this discussion on the stackoverlow already, so that yoy might have a look here.?
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the note "The standard approach to making a customizable control template is to use TemplateBinding in the template to?bind to properties ?of the control, and then to set those properties in the child styles."
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and here ist one of the example that you can find the stackoverflow forum.
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<StackPanel> <StackPanel.Resources> <Style x:Key="BaseButtonStyle" TargetType="Button"> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="Button"> <Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}"> <ContentPresenter/> </Border> </ControlTemplate> </Setter.Value> </Setter> </Style> <Style x:Key="BlueButtonStyle" TargetType="Button" BasedOn="{StaticResource BaseButtonStyle}"> <Setter Property="Background" Value="Blue"/> </Style> <Style x:Key="RedButtonStyle" TargetType="Button" BasedOn="{StaticResource BaseButtonStyle}"> <Setter Property="Background" Value="Red"/> </Style> </StackPanel.Resources> <Button Style="{StaticResource RedButtonStyle}">Red</Button> <Button Style="{StaticResource BlueButtonStyle}">Blue</Button></StackPanel>??
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The note:?
Below is a more elaborated example of how you can overrid the style to make the togglebutton to have different image depending on the IsChecked status.
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<Style x:Key="_icoToggleButton" BasedOn="{x:Null}" TargetType="{x:Type ToggleButton}"> <Style.Resources> <BitmapImage x:Key="_imageOnSource" UriSource="pack://application:,,,/Resources/Images/excel_icon.gif" /> <BitmapImage x:Key="_imageOffSource" UriSource="pack://application:,,,/Resources/Images/refresh.PNG" /> </Style.Resources> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type ToggleButton}"> <Grid> <Image Margin="2,2,2,2" x:Name="image" Source="{DynamicResource _imageOnSource}" /> </Grid> <ControlTemplate.Triggers> <Trigger Property="IsChecked" Value="True"> <Setter TargetName="image" Property="Source" Value="{DynamicResource _imageOnSource}" /> <Setter Property="ToolTip" Value="Click to Turn Off Auto Sorted/Filtered/Grouped by Fields" /> </Trigger> <Trigger Property="IsChecked" Value="False" > <Setter TargetName="image" Property="Source" Value="{DynamicResource _imageOffSource}" /> <Setter Property="ToolTip" Value="Click to Turn On Auto Sorted/Filtered/Grouped by Fields" /> </Trigger> <Trigger Property="IsChecked" Value="{x:Null}" > <Setter TargetName="image" Property="Source" Value="{DynamicResource _imageOnSource}" /> <Setter Property="ToolTip" Value="Click to Turn On Auto Sorted/Filtered/Grouped by Fields" /> </Trigger> <Trigger Property="IsFocused" Value="True" /> <Trigger Property="IsMouseOver" Value="True"> <Trigger.EnterActions> <BeginStoryboard Storyboard="{StaticResource _iconOverStoryboard}" x:Name="_iconOverStoryboard_BeginStoryboard" /> </Trigger.EnterActions> <Trigger.ExitActions> <BeginStoryboard Storyboard="{StaticResource _iconAwayStoryboard}" x:Name="_iconAwayStoryboard_BeginStoryboard" /> </Trigger.ExitActions> </Trigger> <Trigger Property="IsPressed" Value="True"> <Trigger.EnterActions> <BeginStoryboard Storyboard="{StaticResource _iconPressStoryboard}" x:Name="_iconPressStoryboard_BeginStoryboard" /> </Trigger.EnterActions> <Trigger.ExitActions> <BeginStoryboard Storyboard="{StaticResource _iconReleaseStoryboard}" x:Name="_iconReleaseStoryboard_BeginStoryboard" /> </Trigger.ExitActions> </Trigger> <Trigger Property="IsEnabled" Value="False" /> </ControlTemplate.Triggers> </ControlTemplate> </Setter.Value> </Setter> </Style>?
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Then you can define a child style as such.
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<Style x:Key="_customizedIcoToggleButton" BasedOn="{StaticResource _customizedIcoToggleButton}" TargetType="{x:Type ToggleButton}"> <Style.Resources> <BitmapImage x:Key="_imageOnSource" UriSource="pack://application:,,,/Resources/Images/automatic.gif" /> <BitmapImage x:Key="_imageOffSource" UriSource="pack://application:,,,/Resources/Images/manua.PNG" /> </Style.Resources> </Style>?
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the new style "_customizedIcoToggleButton" now have a different images for on/off status.
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