Concept of Template Triggers and EventTriggers

Hi All

I am so confused about Template/Style Triggers and EventTriggers.
For previous ones, the Setter will trigger while condition is true.
For the Event ones, actions will take while event occurs.

Template/Style Triggers -----> Setters
EventTriggers -----> Actions ( BeginStoryboard, ..etc)

But I want to use some condition to play storyboard.
I found I can't do this, or I want to use EventTriggers to do some
Setter

Is there any way to do that?
Is there any concept I missed for these two different triggers?

Thanks

For starting actions when a condition is true use Enter/ExitActions

<Style.Triggers>
<Trigger Property="MyProperty" Value="True">
<Trigger.EnterActions>
<BeginStoryboard>
...
</Trigger.EnterActions>
<Trigger.ExitActions>
<BeginStoryboard>
...

I don't think it's possible to use a setter in an event trigger.
--
Valentin Iliescu [MVP C#]


"HolaMan" wrote:

> Hi All
>
> I am so confused about Template/Style Triggers and EventTriggers.
> For previous ones, the Setter will trigger while condition is true.
> For the Event ones, actions will take while event occurs.
>
> Template/Style Triggers -----> Setters
> EventTriggers -----> Actions ( BeginStoryboard, ..etc)
>
> But I want to use some condition to play storyboard.
> I found I can't do this, or I want to use EventTriggers to do some
> Setter
>
> Is there any way to do that?
> Is there any concept I missed for these two different triggers?
>
> Thanks
>
>

Thanks you very mcuh~~~

Hi~~

I discovered some sample use Event trigger of Button in XAML to replace
write Event Handler in .cs
EX.
<Button.Triggers>
<EventTrigger RoutedEvent="Button.Click">
<BeginStoryboard>
....
</BeginStoryboard>
</EventTrigger>
</Button.Triggers>

But I think if there is a SetterActions will be nice to use
<Button.Triggers>
<EventTrigger RoutedEvent="Button.Click">
<SetterAction>
<Setter Property="SelectedIndex" Value="1"
Targetname="TabControl"/>
</SetterAction>
</EventTrigger>
</Button.Triggers>

So I want to implement my own SetterAction derived from TriggerBase.
I found I can't do this because of some inaccessible data structure.
Is there any reaons or conflict logics for SetterActions ?

Thanks
Have a nice Day

HolaMan

Right or wrong (and I've heard arguments both ways), we decided not to
support setters inside event triggers because unlike every other form of
trigger, the setter would continue to apply even after the
style/template/whatever containing the trigger had been removed.

-Nick Kramer [MSFT]

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"HolaMan" <reality.chang@gmail.com> wrote in message
news:1144912453.570854.65300@i40g2000cwc.googlegroups.com...
> Hi~~
>
> I discovered some sample use Event trigger of Button in XAML to replace
> write Event Handler in .cs
> EX.
> <Button.Triggers>
> <EventTrigger RoutedEvent="Button.Click">
> <BeginStoryboard>
> ....
> </BeginStoryboard>
> </EventTrigger>
> </Button.Triggers>
>
> But I think if there is a SetterActions will be nice to use
> <Button.Triggers>
> <EventTrigger RoutedEvent="Button.Click">
> <SetterAction>
> <Setter Property="SelectedIndex" Value="1"
> Targetname="TabControl"/>
> </SetterAction>
> </EventTrigger>
> </Button.Triggers>
>
> So I want to implement my own SetterAction derived from TriggerBase.
> I found I can't do this because of some inaccessible data structure.
> Is there any reaons or conflict logics for SetterActions ?
>
> Thanks
> Have a nice Day
>
> HolaMan
>