Building a workflow designer with Silverlight (10)

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Six enhancements to the user Experience feature

6.6 Increase animation effect

In the previous chapter we added an animation effect to the menu, which we continued to add to the animation, including:

Fade effect of new activity

Remove fade effect from activity

Fade effect of new rule

Fade Effect of Delete rule

This article source address: http://www.cnblogs.com/chegan/archive/2009/05/13/1455307.htm

6.6.1 Fade Effect

The implementation of these animations is relatively simple, first you need to add a DoubleAnimation object, the XAML code is as follows:

<Storyboard　　x:Name="sbDisplay">
<DoubleAnimation　　　From="0"　To="0.8"　Duration="00:00:1.0"　
Storyboard.TargetName=""　
Storyboard.TargetProperty="Opacity"　>
</DoubleAnimation>
</Storyboard>

TargetName the object that implements the animation effect.

TargetProperty indicates that the object's attribute implements animation

From indicates the initial value of the TargetProperty

To indicate the final value of the TargetProperty

Duration indicates the duration of the animation

These property values can also be set in the background using C # code. In the course of my use, I used the

Storyboard.SetTargetName(sbDisplay, "currentPic");

To dynamically set the TargetName value of the animation, but it is always wrong during the run, as shown in the following illustration:

Seems to be related to namespaces and later uses

Storyboard.SetTarget(sbDisplay, currentPic);

To get the correct results, if you have any knowledge of this, please help to give reasons.

In addition, the TargetProperty property also supports user-defined properties, and this feature is also used in this program because of our custom animation effects.

You can implement the fade in activity and rule by calling the animation's start function in the active and rule constructors.

sbDisplay.Begin();