6
我有一个简单的WPF应用程序。在主窗口中，我有堆栈面板和2个按钮。第一个按钮添加100个我的用户控件（没有任何数据绑定，事件，位图），然后从面板中删除所有这些控件并调用GC.Collect（）。并且存在一些问题： 1.在我第一次单击“删除”按钮后，并非我所有的内存版本都已发布，并且我必须多次单击它以释放更多内存。 2.经过5 - 10分钟的内存释放，但几兆字节不。WPF内存泄漏
例如我的应用程序启动后，大约需要22MB 当我加入500个控制 - 〜我点击60MB 后“删除”按钮，第一次 - 〜55MB（我等待一段时间，内存不释放） 我点击几时间和内存下降到25MB， 我不明白这一点，我是新的WPF，也许我错过了什么 我想立即释放内存。
<Window x:Class="WpfApplication10.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="385" Width="553">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="25" />
<RowDefinition Height="240*" />
<RowDefinition Height="25" />
</Grid.RowDefinitions>
<Grid
Name="border1"
Grid.Row="1"
HorizontalAlignment="Stretch"
VerticalAlignment="Stretch" >
<ScrollViewer VerticalAlignment="Stretch"
Name="scrollViewer1"
HorizontalAlignment="Stretch">
<StackPanel
Margin="3,3,3,3"
Background="Transparent"
VerticalAlignment="Stretch"
Name="activityStackPanel"
HorizontalAlignment="Stretch">
</StackPanel>
</ScrollViewer>
</Grid>
<Button Content="Button" Grid.Row="2" Height="23" HorizontalAlignment="Left" Margin="12,0,0,0" Name="button1" VerticalAlignment="Top" Width="75" Click="button1_Click" />
<Button Content="Button" Grid.Row="2" Height="23" HorizontalAlignment="Left" Margin="141,0,0,0" Name="button2" VerticalAlignment="Top" Width="75" Click="button2_Click" />
<Label Content="Label" Grid.RowSpan="2" Height="28" HorizontalAlignment="Left" Margin="34,0,0,0" Name="label1" VerticalAlignment="Top" />
</Grid>
namespace WpfApplication10
{
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
private void button1_Click(object sender, RoutedEventArgs e)
{
int N = 100;
//var r = new ActivityStatisticItem("111", "222", DateTime.Now, "333", 1);
for (int i = 0; i < N; i++)
{
activityStackPanel.Children.Add(new UserControl1());
}
label1.Content = activityStackPanel.Children.Count;
}
private void button2_Click(object sender, RoutedEventArgs e)
{
activityStackPanel.Children.Clear();
label1.Content = activityStackPanel.Children.Count;
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
}
}
}
<UserControl x:Class="WpfApplication10.UserControl1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
Background="Transparent"
Margin="0,2,0,2"
MinHeight="80"
MinWidth="130"
MaxHeight="80">
<Grid Width="441">
<Grid.RowDefinitions>
<RowDefinition Height="40" Name="rowTop" />
<RowDefinition Height="40" Name="rowBottom"/>
</Grid.RowDefinitions>
<Border BorderBrush="Gray"
BorderThickness="1"
HorizontalAlignment="Stretch"
Background="LightGreen"
Name="contactPanel"
CornerRadius="3,3,3,3"
VerticalAlignment="Stretch" Panel.ZIndex="1" >
<Grid
VerticalAlignment="Stretch"
Name="grid1"
Margin="3,0,3,0"
HorizontalAlignment="Stretch">
<Label Content="Contact" Height="15" HorizontalAlignment="Left" Margin="15,3,0,0" Name="headerLabel" Padding="0" VerticalAlignment="Top" FontSize="10" FontWeight="DemiBold"/>
<Label Content="00/00/0000 00:00:00" Height="15" HorizontalAlignment="Left" Margin="13,18,0,0" Name="timeLabel" Padding="0" VerticalAlignment="Top" FontSize="10" Width="100" FontWeight="DemiBold" />
<Label Content="00:00:00" Height="15" HorizontalAlignment="Right" Margin="0,18,0,0" Name="durationLabel" Padding="0" VerticalAlignment="Top" FontSize="10" Width="38" FontWeight="DemiBold"/>
<!--<Image Height="12" HorizontalAlignment="Left" Margin="0,3,0,0" Name="directionPictureBox" Stretch="Fill" VerticalAlignment="Top" Width="12" />
<Image Height="12" HorizontalAlignment="Right" Margin="0,20,41,0" Name="timerImage" Stretch="Fill" VerticalAlignment="Top" Width="12" />
<Image Height="12" HorizontalAlignment="Left" Margin="0,20,0,0" Name="dateTimeImage" Stretch="Fill" VerticalAlignment="Top" Width="12" />-->
</Grid>
</Border>
<Border BorderBrush="Gray"
BorderThickness="1,0,1,1"
Grid.Row="1"
Background="White"
HorizontalAlignment="Stretch"
Margin="10,0,10,0"
Name="detailsPanel"
CornerRadius="0,0,3,3"
VerticalAlignment="Stretch">
<Grid HorizontalAlignment="Stretch"
Name="grid2"
Margin="3,0,3,0"
VerticalAlignment="Stretch">
<Label Content="Label" Height="15" HorizontalAlignment="Stretch" FontSize="9" Padding="0" Margin="0,3,0,0" Name="numberRadLabel" VerticalAlignment="Top" />
<Label Content="Label" Height="15" HorizontalAlignment="Stretch" FontSize="9" Padding="0" Margin="0,18,0,0" Name="queueRadLabel" VerticalAlignment="Top" />
</Grid>
</Border>
</Grid>
在用户控制我只有
public UserControl1()
{
InitializeComponent();
}
向我们展示一些代码，好不好？ – Aliostad
你如何衡量“内存使用量”？在Windows任务管理器？ – spender
@Alistad意味着什么：您能提供一个能够重现问题的*最小*工作示例的代码吗？ – Heinzi