我有一个itemsControl绑定到一个可观察的字典,显示两个文本框中的键和值,用户控件加载大约需要15秒。我尝试虚拟化stackpanels并将其切换到列表框或使用常规字典,但仍然会出现延迟
可能导致这种情况的任何想法,以及如何让它加载更快?
public partial class WordsView : UserControl, INotifyPropertyChanged
{
public WordsView()
{
InitializeComponent();
Dictionarylist.ItemsSource = curDic;
}
private ObservableDictionary<string,int> cur_dic = new ObservableDictionary<string, int>(App.PredDic);
public ObservableDictionary<string, int> curDic
{
get { return cur_dic; }
set
{
SetField(ref cur_dic, value, "curDic");
}
}
}
}
和我的xaml
<UserControl x:Class="Ez.Management.WordsView"
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"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:local="clr-namespace:Ez.Management"
DataContext="{Binding RelativeSource={RelativeSource Self}}"
xmlns:properties="clr-namespace:Ez.Properties"
xmlns:main ="clr-namespace:Ez"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="300">
<StackPanel>
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<GroupBox Grid.Row="1" Header="Words">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<ItemsControl x:Name="Dictionarylist" ItemsSource="{Binding curDic}" VirtualizingStackPanel.IsVirtualizing="True"
ScrollViewer.CanContentScroll="True">
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<VirtualizingStackPanel></VirtualizingStackPanel>
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
<ItemsControl.ItemTemplate>
<DataTemplate>
<Grid Margin="3">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="3*"></ColumnDefinition>
<ColumnDefinition Width="1*"></ColumnDefinition>
</Grid.ColumnDefinitions>
<TextBlock Text="{Binding Key}" Grid.Column="0" />
<TextBlock Text="{Binding Value}" Grid.Column="1"/>
</Grid>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</Grid>
</GroupBox>
</Grid>
</StackPanel>
</UserControl>
ScrollViewer.CanContentScroll
需要时间...尝试将其设置为False
。喜欢,
ScrollViewer.CanContentScroll="False"