Question

我有一个WPF应用程序，其中我有4行DataGrid。我有一个DataTrigger来使用BeginStoryBoard为选择设置动画。每次选择更改都会产生一堆内存泄漏。太奇怪了。

<DataTrigger Binding="{Binding RelativeSource={RelativeSource AncestorType={x:Type DataGridRow}}, Path=IsSelected}" Value="True">
                <DataTrigger.EnterActions>
                    <BeginStoryboard>
                        <Storyboard>
                            <DoubleAnimation Storyboard.TargetProperty="Width" Storyboard.TargetName="valueTextBlock" 
                                                       To="375" FillBehavior="HoldEnd" BeginTime="00:00:00.0" Duration="00:00:00.4"></DoubleAnimation>
                            <DoubleAnimation Storyboard.TargetProperty="Width" Storyboard.TargetName="valueTextBlock"
                                                       To="375" FillBehavior="HoldEnd" BeginTime="00:00:00.0" Duration="00:00:00.4"></DoubleAnimation>
                            <DoubleAnimation Storyboard.TargetProperty="Opacity" Storyboard.TargetName="valueTextBlock" 
                                                       To="1" FillBehavior="HoldEnd" BeginTime="00:00:00.0" Duration="00:00:00.4"></DoubleAnimation>
                        </Storyboard>
                    </BeginStoryboard>
                </DataTrigger.EnterActions>
                <DataTrigger.ExitActions>
                    <BeginStoryboard>
                        <Storyboard>
                            <DoubleAnimation Storyboard.TargetProperty="Width" Storyboard.TargetName="valueTextBlock"
                                                       To="300" FillBehavior="HoldEnd" BeginTime="00:00:00.0" Duration="00:00:00.4"></DoubleAnimation>
                            <DoubleAnimation Storyboard.TargetProperty="Width" Storyboard.TargetName="valueTextBlock"
                                                       To="300" FillBehavior="HoldEnd" BeginTime="00:00:00.0" Duration="00:00:00.4"></DoubleAnimation>
                            <DoubleAnimation Storyboard.TargetProperty="Opacity" Storyboard.TargetName="valueTextBlock" 
                                                       To="0.5" FillBehavior="HoldEnd" BeginTime="00:00:00.0" Duration="00:00:00.4"></DoubleAnimation>
                        </Storyboard>
                    </BeginStoryboard>
                </DataTrigger.ExitActions>
                <DataTrigger.Setters>
                    <Setter Property="BorderBrush" Value="{StaticResource brushTextBox_Border_Focused}" TargetName="valueTextBlock" />
                </DataTrigger.Setters>
            </DataTrigger>

这是在DataTemplate上完成的。并且还将Storyboard添加到DataGridCell样式以在选择行时增加FontSize。我确信，我没有以适当的方式完成动画。但是当我尝试使用RemoveStoryBoard时，动画并不流畅。

任何建议都会有所帮助。

Answer 1

我找到了一个解决方案，你必须调用垃圾收集器，因为StoryBoards有一个很大的bug。在加载＆＃34; imagen＆＃34;：

之前尝试这个

GC.Collect();
GC.WaitForPendingFinalizers();

动画WPF DataGrid IsSelected创建内存泄漏

1 个答案: