CODEWITHSUNDEEP
.netwpfxamltriggers
Qwertie
Qwertie

Reputation: 17196

XAML: Why doesn't this trigger work?

I'd like to use a trigger outside a style. Edit: whoops, sorry, it's actually inside a style for MainWindow, but I want the trigger to apply to the Ellipse and not MainWindow.

<Ellipse Fill="White" StrokeThickness="1" Stroke="Black">
    <Ellipse.Triggers>
        <Trigger Property="IsMouseOver" Value="True">
            <Setter Property="Fill" Value="Yellow"/>
        </Trigger>
    </Ellipse.Triggers>
</Ellipse>

How do I fix the compiler error, which is "Cannot find the static member 'FillProperty' on the type 'MainWindow'"?

Upvotes: 3

Views: 1692

Answers (3)

Kishore Kumar
Kishore Kumar

Reputation: 21873

you have to put this in style

<Ellipse  StrokeThickness="1" Width="20" Height="20" Stroke="black">
    <Ellipse.Style>
  <Style TargetType="{x:Type Ellipse}">
    <Setter Property="Fill" Value="Red"/>

    <Style.Triggers>
      <Trigger Property="IsMouseOver" Value="true">
        <Setter Property="Fill" Value="green"/>
      </Trigger>
    </Style.Triggers>
  </Style>
</Ellipse.Style>

Upvotes: 4

brunnerh
brunnerh

Reputation: 185300

In direct Triggers you need qualifying type names like so:

<Ellipse Width="100" Height="100">
    <Ellipse.Triggers>
        <Trigger Property="Ellipse.IsMouseOver" Value="True">
            <Setter Property="Ellipse.Fill" Value="Yellow" />
        </Trigger>
    </Ellipse.Triggers>
</Ellipse>

This won't work though since direct triggers only allow EventTriggers, use a Style instead.

Upvotes: 2

Jeff Paulsen
Jeff Paulsen

Reputation: 2152

Your window doesn't have a property named "Fill" like an Ellipse does. Maybe you mean "Background".

Upvotes: 0

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