当newCall的值为true时,我无法让我的tabitem闪烁。我认为我有Xaml正确,但我不知道如何在代码中绑定它。当变量new Call设置为true时,我希望我的tabitem闪烁。
<TabItem.Style>
<Style TargetType="{x:Type TabItem}" BasedOn="{StaticResource MetroTabItem}">
<Style.Resources>
<Storyboard x:Key="flashAnimation" >
<DoubleAnimation Storyboard.TargetProperty="Opacity" From="1" To="0" AutoReverse="True" Duration="0:0:0.5" RepeatBehavior="Forever" />
</Storyboard>
</Style.Resources>
<Style.Triggers>
<DataTrigger Binding="{Binding newCall}" Value="True">
<DataTrigger.EnterActions>
<BeginStoryboard Name="flash" Storyboard="{StaticResource flashAnimation}" />
</DataTrigger.EnterActions>
</DataTrigger>
</Style.Triggers>
</Style>
</TabItem.Style>
答案 0 :(得分:0)
您的ViewModel必须实现INotifyPropertyChanged
。在ViewModel中添加以下代码:
private bool _newCall;
public bool newCall
{
get { return _newCall; }
set
{
_newCall = value;
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs("newCall"));
}
}
}
并将Binding="{Binding newCall}
更改为Binding="{Binding newCall, UpdateSourceTrigger=PropertyChanged}"
然后,只要newCall设置为true,TabItem就会开始闪烁