从属性更改DoubleAnimation

Question

我已经定义了带有DoubleAnimation的Storyboard，在启动动画之前，我需要改变代码隐藏中的值。我该怎么做呢？

这不起作用-我得到一个异常对象引用，没有设置为一个对象的实例。

<Storyboard x:Key="SB_showhide" Duration="0:0:1">
    <DoubleAnimation x:Name="move" Storyboard.TargetProperty="(Window.Left)" From="0" To="500" />
</Storyboard>

((DoubleAnimation)FindName("move")).From = 200;
BeginStoryboard((Storyboard)FindResource("SB_showhide"));

Answer 1

这应该是可行的：

var storyboard = (Storyboard)Resources["SB_showhide"];
var move = (DoubleAnimation)storyboard.Children[0];
move.From = 200;