C# 当使用过多的自定义控件时,WPF会降低性能
我是WPF编程新手,在我的应用程序中有一个性能缓慢的问题 我有一个带有网格和两列的视图。第一列是列表框,其中是运行类型,第二列是运行类型的详细视图。在这个详细视图中,有一些基本的属性控件,如标签等,还有一个导航栏控件(来自devexpress),其中有RunConfigs。导航栏的工作方式类似于一个手风琴控件,它显示所有runconfig,并且可以扩展它们的详细信息 我需要一个选项来控制所有字段的可见性和启用状态,因此我创建了此自定义控件:C# 当使用过多的自定义控件时,WPF会降低性能,c#,wpf,C#,Wpf,我是WPF编程新手,在我的应用程序中有一个性能缓慢的问题 我有一个带有网格和两列的视图。第一列是列表框,其中是运行类型,第二列是运行类型的详细视图。在这个详细视图中,有一些基本的属性控件,如标签等,还有一个导航栏控件(来自devexpress),其中有RunConfigs。导航栏的工作方式类似于一个手风琴控件,它显示所有runconfig,并且可以扩展它们的详细信息 我需要一个选项来控制所有字段的可见性和启用状态,因此我创建了此自定义控件: <ResourceDictionary xmln
<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:controls="clr-namespace:ManualDistill.Controls"
xmlns:converters="clr-namespace:ManualDistill.Converters">
<Style TargetType="{x:Type controls:EditorControl}" BasedOn="{StaticResource {x:Type ContentControl}}">
<Style.Triggers>
<Trigger Property="IsInEditMode" Value="True">
<Setter Property="Content" Value="{Binding RelativeSource={RelativeSource Self}, Path=EditContent}" />
</Trigger>
<Trigger Property="IsInEditMode" Value="False">
<Setter Property="Content" Value="{Binding RelativeSource={RelativeSource Self}, Path=ViewContent}" />
</Trigger>
</Style.Triggers>
</Style>
</ResourceDictionary>
和cs文件:
public class EditorControl: ContentControl
{
public EditorControl()
{
DefaultStyleKey = typeof(EditorControl);
//DefaultStyleKeyProperty.OverrideMetadata(typeof(EditorControl), new FrameworkPropertyMetadata(typeof(EditorControl)));
Messenger.Default.Register<LayoutChangeMessage>(this,
(message) =>
{
if (this.Feature == message.Feature && this.DisplayField == message.DisplayField)
{
if (message.LayoutData != null)
{
DispatcherHelper.RunAsync(() =>
{
ResetLayout();
SetLayout(message.LayoutData);
});
}
}
});
}
#region DependencyProperties
/// <summary>
/// If the control is currently in edit mode
/// </summary>
public bool IsInEditMode
{
get { return (bool)GetValue(IsInEditModeProperty); }
set { SetValue(IsInEditModeProperty, value); }
}
public static readonly DependencyProperty IsInEditModeProperty =
DependencyProperty.Register("IsInEditMode",
typeof(bool),
typeof(EditorControl),
new PropertyMetadata(false));
public string DisplayField
{
get { return (string)GetValue(DisplayFieldProperty); }
set { SetValue(DisplayFieldProperty, value); }
}
public static readonly DependencyProperty DisplayFieldProperty =
DependencyProperty.Register("DisplayField",
typeof(string),
typeof(EditorControl),
new PropertyMetadata(""));
public string Feature
{
get { return (string)GetValue(FeatureProperty); }
set { SetValue(FeatureProperty, value); }
}
public static readonly DependencyProperty FeatureProperty =
DependencyProperty.Register("Feature",
typeof(string),
typeof(EditorControl),
new PropertyMetadata(""));
public object EditContent
{
get { return GetValue(EditContentProperty); }
set
{
SetValue(EditContentProperty, value);
}
}
public static readonly DependencyProperty EditContentProperty =
DependencyProperty.Register("EditContent",
typeof(object),
typeof(EditorControl),
new FrameworkPropertyMetadata((object)null));
public object ViewContent
{
get { return GetValue(ViewContentProperty); }
set { SetValue(ViewContentProperty, value); }
}
public static readonly DependencyProperty ViewContentProperty =
DependencyProperty.Register("ViewContent",
typeof(object),
typeof(EditorControl),
new FrameworkPropertyMetadata((object)null));
#endregion
public Visibility DefaultVisibility { get; set; }
public bool DefaultIsEnabled { get; set; }
protected override void OnInitialized(EventArgs e)
{
base.OnInitialized(e);
this.DefaultVisibility = this.Visibility;
this.DefaultIsEnabled = this.IsEnabled;
if (!System.ComponentModel.DesignerProperties.GetIsInDesignMode(this))
{
var layouts = StillLayoutManager.Instance.GetActiveLayouts(this.Feature, this.DisplayField);
if (layouts != null)
{
SetLayout(layouts);
}
}
}
private void ResetLayout()
{
this.Visibility = this.DefaultVisibility;
this.IsEnabled = this.DefaultIsEnabled;
}
private void SetLayout(IEnumerable<ILayoutData> layouts)
{
foreach (var data in layouts)
{
this.Visibility = data.Visibility ? Visibility.Visible : Visibility.Collapsed;
this.IsEnabled = data.Editable;
}
}
}
公共类编辑器控件:ContentControl
{
公共编辑控制()
{
DefaultStyleKey=typeof(EditorControl);
//DefaultStyleKeyProperty.OverrideMetadata(typeof(EditorControl),new FrameworkPropertyMetadata(typeof(EditorControl));
Messenger.Default.Register(此,
(信息)=>
{
if(this.Feature==message.Feature&&this.DisplayField==message.DisplayField)
{
if(message.LayoutData!=null)
{
DispatcherHelper.RunAsync(()=>
{
重置布局();
SetLayout(message.LayoutData);
});
}
}
});
}
#区域依赖性房地产
///
///如果控件当前处于编辑模式
///
公共布尔ISINDEDITMODE
{
获取{return(bool)GetValue(IsInEditModeProperty);}
set{SetValue(IsInEditModeProperty,value);}
}
公共静态只读从属属性IsInEditModeProperty=
DependencyProperty.Register(“IsInEditMode”,
类型(bool),
类型(编辑控制),
新属性元数据(假));
公共字符串显示字段
{
获取{return(string)GetValue(DisplayFieldProperty);}
set{SetValue(DisplayFieldProperty,value);}
}
公共静态只读DependencyProperty DisplayFieldProperty=
DependencyProperty.Register(“DisplayField”,
类型(字符串),
类型(编辑控制),
新房地产元数据(“”);
公共字符串特征
{
获取{return(string)GetValue(FeatureProperty);}
集合{SetValue(FeatureProperty,value);}
}
公共静态只读从属属性FeatureProperty=
DependencyProperty.Register(“功能”,
类型(字符串),
类型(编辑控制),
新房地产元数据(“”);
公共对象编辑内容
{
获取{返回GetValue(EditContentProperty);}
设置
{
SetValue(EditContentProperty,value);
}
}
公共静态只读DependencyProperty EditContentProperty=
DependencyProperty.Register(“EditContent”,
类型(对象),
类型(编辑控制),
新的FrameworkPropertyMetadata((object)null));
公共对象视图内容
{
获取{返回GetValue(ViewContentProperty);}
set{SetValue(ViewContentProperty,value);}
}
公共静态只读从属属性ViewContentProperty=
DependencyProperty.Register(“ViewContent”,
类型(对象),
类型(编辑控制),
新的FrameworkPropertyMetadata((object)null));
#端区
公共可见性默认可见性{get;set;}
public bool DefaultIsEnabled{get;set;}
已初始化受保护的覆盖无效(事件参数e)
{
基础。初始化(e);
this.DefaultVisibility=this.Visibility;
this.DefaultIsEnabled=this.IsEnabled;
if(!System.ComponentModel.DesignerProperties.GetIsInDesignMode(此))
{
var layouts=StillLayoutManager.Instance.GetActiveLayouts(this.Feature,this.DisplayField);
如果(布局!=null)
{
设置布局(布局);
}
}
}
私有空间布局()
{
this.Visibility=this.DefaultVisibility;
this.IsEnabled=this.DefaultIsEnabled;
}
私有void集合布局(IEnumerable布局)
{
foreach(布局中的var数据)
{
this.Visibility=data.Visibility?Visibility.Visibility:Visibility.Collapsed;
this.IsEnabled=data.Editable;
}
}
}
如您所见,我有两个用于编辑/查看的内容属性,并根据编辑模式将它们设置为“内容属性”。然后,这个自定义控件就像我需要的每个字段或每个对象的容器一样工作。然后,可以通过操纵这些控件的系统来管理字段或对象可见性(这与问题无关,只是解释为什么我在那里有这些控件)
问题是,当我用RunType单击列表框时,我必须等待几秒钟,直到看到详细信息。所有控件都会被创建,然后被释放,因此不会记住任何内容。将更改运行类型集合,以便可以从中添加或删除更多。因此控件总是动态创建的
RunManagement、RunTypeControl和RunConfigControl的xaml文件如下:
<UserControl ...>
<Grid cmn:GridUtils.ColumnDefinitions="Auto, *">
<lc:LayoutGroup Orientation="Vertical" View="GroupBox" Header="{lex:LocTextUpper RunType}" MinWidth="250">
<dxe:ListBoxEdit x:Name="RunTypesList"
ItemsSource="{Binding RunTypes}"
SelectedItem="{Binding SelectedRunType}">
<dxe:ListBoxEdit.ContextMenu>
<ContextMenu>
<MenuItem Header="{lex:LocText Copy}" Command="{Binding CmdCopy}"/>
</ContextMenu>
</dxe:ListBoxEdit.ContextMenu>
<dxe:ListBoxEdit.ItemTemplate>
<DataTemplate>
<TextBlock HorizontalAlignment="Left" Text="{Binding Label}" TextWrapping="Wrap"/>
</DataTemplate>
</dxe:ListBoxEdit.ItemTemplate>
</dxe:ListBoxEdit>
</lc:LayoutGroup>
<Grid Grid.Column="1">
<local:RunTypeControl DataContext="{Binding SelectedRunType}" />
</Grid>
</Grid>
</UserControl>
<
<UserControl ...>
<Grid Margin="10">
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<lc:LayoutControl Orientation="Horizontal">
<lc:LayoutGroup Orientation="Vertical">
<controls:EditorControl IsInEditMode="{Binding IsInEditMode}">
<controls:EditorControl.ViewContent>
<lc:LayoutItem Label="{lex:LocText Label}">
<TextBlock Text="{Binding Label}" />
</lc:LayoutItem>
</controls:EditorControl.ViewContent>
<controls:EditorControl.EditContent>
<lc:LayoutItem Label="{lex:LocText Label}">
<dxe:TextEdit Text="{Binding Label}"/>
</lc:LayoutItem>
</controls:EditorControl.EditContent>
</controls:EditorControl>
</lc:LayoutGroup>
<lc:LayoutGroup Orientation="Vertical">
<lc:LayoutItem>
</lc:LayoutItem>
</lc:LayoutGroup>
</lc:LayoutControl>
<lc:LayoutGroup Grid.Row="1" Margin="0,5" View="Tabs">
<lc:LayoutGroup Orientation="Horizontal" Header="{Binding TabHeaderRunStates}">
<lc:LayoutItem>
<dxn:NavBarControl Name="navBar" Grid.Column="1" ItemsSource="{Binding RunConfigs}" Margin="10 0 0 0">
<dxn:NavBarControl.ItemTemplate>
<DataTemplate>
<controls:EditorControl IsInEditMode="{Binding IsInEditMode}">
<controls:EditorControl.ViewContent>
<dxn:NavBarGroup DisplaySource="Content" Header="{Binding DisplayName}" IsExpanded="False">
<dxn:NavBarGroup.Content>
<local:RunConfigControl DataContext="{Binding}"/>
</dxn:NavBarGroup.Content>
</dxn:NavBarGroup>
</controls:EditorControl.ViewContent>
<controls:EditorControl.EditContent>
<dxn:NavBarGroup DisplaySource="Content" Header="{Binding DisplayName}" IsExpanded="False">
<dxn:NavBarGroup.Content>
<local:RunConfigControl DataContext="{Binding}"/>
</dxn:NavBarGroup.Content>
</dxn:NavBarGroup>
</controls:EditorControl.EditContent>
</controls:EditorControl>
</DataTemplate>
</dxn:NavBarControl.ItemTemplate>
<dxn:NavBarControl.View>
<dxn:ExplorerBarView Click="ExplorerBarView_Click"
GroupAdding="ExplorerBarView_GroupAdding" />
</dxn:NavBarControl.View>
</dxn:NavBarControl>
</lc:LayoutItem>
</lc:LayoutGroup>
</lc:LayoutGroup>
</Grid>
</UserControl>
<UserControl ...>
<AdornerDecorator>
<lc:LayoutControl Orientation="Horizontal">
<lc:LayoutGroup Orientation="Vertical">
<controls:EditorControl IsInEditMode="{Binding IsInEditMode}">
<controls:EditorControl.ViewContent>
<lc:LayoutItem Label="{lex:LocText CloseCut}">
<TextBlock Text="{Binding CloseCut}" />
</lc:LayoutItem>
</controls:EditorControl.ViewContent>
<controls:EditorControl.EditContent>
<lc:LayoutItem Label="{lex:LocText CloseCut}" HorizontalContentAlignment="Right">
<dxe:TextEdit Text="{Binding CloseCut}" Width="200"/>
</lc:LayoutItem>
</controls:EditorControl.EditContent>
</controls:EditorControl>
<controls:EditorControl IsInEditMode="{Binding IsInEditMode}">
<controls:EditorControl.ViewContent>
<lc:LayoutItem Label="{lex:LocText PressureSetpoint}">
<TextBlock Text="{Binding PressureSetpoint}"/>
</lc:LayoutItem>
</controls:EditorControl.ViewContent>
<controls:EditorControl.EditContent>
<lc:LayoutItem Label="{lex:LocText PressureSetpoint}" HorizontalContentAlignment="Right">
<dxe:TextEdit Text="{Binding PressureSetpoint}" Width="200"/>
</lc:LayoutItem>
</controls:EditorControl.EditContent>
</controls:EditorControl>
<controls:EditorControl IsInEditMode="{Binding IsInEditMode}">
<controls:EditorControl.ViewContent>
<lc:LayoutItem Label="{lex:LocText SpinningBand}">
<TextBlock Text="{Binding SpinningBand, Converter={StaticResource BooleanOnOffConverter}}" Width="200" />
</lc:LayoutItem>
</controls:EditorControl.ViewContent>
<controls:EditorControl.EditContent>
<lc:LayoutItem Label="{lex:LocText SpinningBand}" HorizontalContentAlignment="Right">
<dxe:ToggleSwitchEdit IsChecked="{Binding SpinningBand}" IsEnabled="True" ContentPlacement="Both"
CheckedStateContent="{lex:LocText ON}"
UncheckedStateContent="{lex:LocText OFF}"/>
</lc:LayoutItem>
</controls:EditorControl.EditContent>
</controls:EditorControl>
...
</lc:LayoutGroup>
</lc:LayoutControl>
</AdornerDecorator>
</UserControl>