嗨,我得到了这个故事板在WPF,这工作得很好,但我需要加载我的用户控件的代码落后。(其中一些需要一些时间来加载,所以我需要给用户关于加载进度的信息)
无论如何,这是我现在的代码。
<ObjectAnimationUsingKeyFrames BeginTime="00:00:00"
Storyboard.TargetName="businessCard"
Storyboard.TargetProperty="(UIElement.Visibility)">
<DiscreteObjectKeyFrame KeyTime="00:00:0.01">
<DiscreteObjectKeyFrame.Value>
<Visibility>Visible</Visibility>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
我用
将它们添加到我的代码中<Grid Name="MyGrid">
<local:BusinessCard x:Name="businessCard"/>
<local:MailMessage x:Name="mailMessageCard"
DataContext="{Binding Path=SelectedItem, ElementName=foldersTreeView}" />
</Grid>
这个工作,但正如我提到的,我需要改变它从代码后运行。我一直在想这样的事情,但是我不能让绑定工作。
var businessCard = new BusinessCard() {Name = "businessCard"};
MyGrid.Children.Add(businessCard);
抛出和错误
'businessCard' name cannot be found in the name scope of 'System.Windows.Controls.Grid'.
您可以使用故事板。目标属性而不是storyboard。targetname。首先删除XAML的TargetName属性,并为动画添加一个名称,以便在代码后面引用它:
<ObjectAnimationUsingKeyFrames x:Name="MyObjectAnimation" BeginTime="00:00:00"
Storyboard.TargetProperty="(UIElement.Visibility)">
<DiscreteObjectKeyFrame KeyTime="00:00:0.01">
<DiscreteObjectKeyFrame.Value>
<Visibility>Visible</Visibility>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
然后在你的代码后面,在你创建对象之后,更新动画:
var businessCard = new BusinessCard() {Name = "businessCard"};
MyGrid.Children.Add(businessCard);
MyObjectAnimation.SetValue(Storyboard.TargetProperty, businessCard)
希望有帮助!