My problem is that in WPF, whenever I try and change the colour of a button's background using triggers or animations, the default mouseover effect (of being grey with that orange glow) seems to take priority.
After extensive searches I'm clueless as to how to remove this effect.
You need to create your own custom button template to have full control over the appearance in all states. Here's a tutorial.
This is similar to the solution referred by Mark Heath but with not as much code to just create a very basic button, without the built-in mouse over animation effect. It preserves a simple mouse over effect of showing the button border in black. The style can be inserted into the Window.Resources or UserControl.Resources section for example (as shown).
<UserControl.Resources>
<!-- This style is used for buttons, to remove the WPF default 'animated' mouse over effect -->
<Style x:Key="MyButtonStyle" TargetType="Button">
<Setter Property="OverridesDefaultStyle" Value="True"/>
<Setter Property="Margin" Value="5"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="Button">
<Border Name="border"
BorderThickness="1"
Padding="4,2"
BorderBrush="DarkGray"
CornerRadius="3"
Background="{TemplateBinding Background}">
<ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center" />
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter TargetName="border" Property="BorderBrush" Value="Black" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</UserControl.Resources>
<!-- usage in xaml -->
<Button Style="{StaticResource MyButtonStyle}">Hello!</Button>
Just to add a very simple solution, that was good enough for me, and I think addresses the OP's issue. I used the solution in this answer except with a regular Background value instead of an image.
<Style x:Key="SomeButtonStyle" TargetType="Button">
<Setter Property="Background" Value="Transparent" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="Button">
<Grid Background="{TemplateBinding Background}">
<ContentPresenter />
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
No re-templating beyond forcing the Background to always be the Transparent background from the templated button - mouseover no longer affects the background once this is done. Obviously replace Transparent with any preferred value.
The Muffin Man had a very simple answer which worked for me.
To add a little more specific direction, at least for VS 2013:
- Right-click the control
- Select Edit Template => Edit a copy...
- I selected 'Application' for where to save the style
- From here you can directly edit App.xaml and see the intuitively named properties. For my purposes, I just set RenderMouseOver="False"
- Then, in the MainWindow.xaml or wherever your GUI is, you can paste the new style at the end of the Button tag, e.g.
... Style="{DynamicResource MouseOverNonDefault}"/>
If someone doesn't want to override default Control Template then here is the solution.
You can create DataTemplate for button which can have TextBlock and then you can write Property trigger on IsMouseOver property to disable mouse over effect. Height of TextBlock and Button should be same.
<Button Background="Black" Margin="0" Padding="0" BorderThickness="0" Cursor="Hand" Height="20">
<Button.ContentTemplate>
<DataTemplate>
<TextBlock Text="GO" Foreground="White" HorizontalAlignment="Center" VerticalAlignment="Center" TextDecorations="Underline" Margin="0" Padding="0" Height="20">
<TextBlock.Style>
<Style TargetType="TextBlock">
<Style.Triggers>
<Trigger Property ="IsMouseOver" Value="True">
<Setter Property= "Background" Value="Black"/>
</Trigger>
</Style.Triggers>
</Style>
</TextBlock.Style>
</TextBlock>
</DataTemplate>
</Button.ContentTemplate>
</Button>
An extension on dodgy_coder's answer which adds support for..
- Maintaining WPF button style
Adds support for IsSelected and hover, i.e. a toggled button
<Style x:Key="Button.Hoverless" TargetType="{x:Type ButtonBase}"> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type ButtonBase}"> <Border Name="border" BorderThickness="{TemplateBinding BorderThickness}" Padding="{TemplateBinding Padding}" BorderBrush="{TemplateBinding BorderBrush}" Background="{TemplateBinding Background}"> <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center" /> </Border> <ControlTemplate.Triggers> <MultiTrigger> <MultiTrigger.Conditions> <Condition Property="IsMouseOver" Value="True" /> <Condition Property="Selector.IsSelected" Value="False" /> </MultiTrigger.Conditions> <Setter Property="Background" Value="#FFBEE6FD" /> </MultiTrigger> <MultiTrigger> <MultiTrigger.Conditions> <Condition Property="IsMouseOver" Value="True" /> <Condition Property="Selector.IsSelected" Value="True" /> </MultiTrigger.Conditions> <Setter Property="Background" Value="#BB90EE90" /> </MultiTrigger> <MultiTrigger> <MultiTrigger.Conditions> <Condition Property="IsMouseOver" Value="False" /> <Condition Property="Selector.IsSelected" Value="True" /> </MultiTrigger.Conditions> <Setter Property="Background" Value="LightGreen" /> </MultiTrigger> <Trigger Property="IsPressed" Value="True"> <Setter TargetName="border" Property="Opacity" Value="0.95" /> </Trigger> </ControlTemplate.Triggers> </ControlTemplate> </Setter.Value> </Setter> </Style>
examples..
<Button Content="Wipe On" Selector.IsSelected="True" />
<Button Content="Wipe Off" Selector.IsSelected="False" />
Using a template trigger:
<Style x:Key="ButtonStyle" TargetType="{x:Type Button}">
<Setter Property="Background" Value="White"></Setter>
...
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Border Background="{TemplateBinding Background}">
<ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Background" Value="White"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
来源：https://stackoverflow.com/questions/3854317/how-to-remove-default-mouse-over-effect-on-wpf-buttons