c# – WPF – AvalonDock – 结账凭证

概述我在 WPF项目中使用AvalonDock和MVVM. 当我点击“X”(选项卡的关闭按钮)时,我的文档关闭但保留在内存中.它似乎只是隐藏的.它不会从我的Model.Documents集合中删除. 如果我添加DockingManager_DocumentClosing并尝试从集合中删除我的文档,我会在Xceed.Wpf.AvalonDock.Layout.LayoutContent的以下方法中收到一 我在 WPF项目中使用AvalonDock和MVVM.

当我点击“X”(选项卡的关闭按钮)时,我的文档关闭但保留在内存中.它似乎只是隐藏的.它不会从我的Model.documents集合中删除.

如果我添加DockingManager_documentClosing并尝试从集合中删除我的文档,我会在Xceed.Wpf.AvalonDock.Layout.LayoutContent的以下方法中收到一个Exception,因为parentAsContainer为null.

/// <summary>/// Close the content/// </summary>/// <remarks>Please note that usually the anchorable is only hIDden (not closed). By default when user click the X button it only hIDes the content.</remarks>public voID Close(){    var root = Root;    var parentAsContainer = Parent as ILayoutContainer;    parentAsContainer.RemoveChild(this);    if (root != null)        root.CollectGarbage();    OnClosed();}

有没有人知道我如何管理AvalonDock中可以从我的Model.documents中删除的文件,以便在我点击其关闭按钮时最终被处理掉？

供参考：这是我的AvalonDock的XAML：

<avalonDock:DockingManager    x:name="DockingManager"     documentsSource="{Binding documentItems}"      ActiveContent="{Binding ActiveMainWindowviewmodel,Converter={StaticResource RestrictedClassConverter},ConverterParameter={x:Type multisimAnalysis:MainWindowviewmodel},Mode=TwoWay}"    documentClosing="DockingManager_documentClosing"    ActiveContentChanged="DockingManager_ActiveContentChanged">  <avalonDock:DockingManager.LayoutItemContainerStyleSelector>    <pane:PanesStyleSelector>      <pane:PanesStyleSelector.MainWindowVIEwLcStyle>        <Style targettype="{x:Type avalonDock:LayoutItem}">          <Setter Property="Title" Value="{Binding Model.Title}"/>          <Setter Property="tooltip" Value="{Binding Model.Title}"/>          <Setter Property="CloseCommand" Value="{Binding Model.CloseCommand}"/>          <Setter Property="IconSource" Value="{Binding Model.IconSource}"/>          <Setter Property="IsSelected" Value="{Binding Model.IsSelected,Mode=TwoWay}"/>          <Setter Property="IsActive" Value="{Binding Model.IsActive,Mode=TwoWay}"/>          <Setter Property="ContentID" Value="{Binding Model.ContentID}"/>        </Style>      </pane:PanesStyleSelector.MainWindowVIEwLcStyle>    </pane:PanesStyleSelector>  </avalonDock:DockingManager.LayoutItemContainerStyleSelector>  <avalonDock:DockingManager.LayoutItemTemplateSelector>    <multisimAnalysis:PanestemplateSelector>      <multisimAnalysis:PanestemplateSelector.MainWindowLcTemplate>        <DataTemplate>          <multisimAnalysis:MainWindowVIEwLc />         </DataTemplate>      </multisimAnalysis:PanestemplateSelector.MainWindowLcTemplate>    </multisimAnalysis:PanestemplateSelector>  </avalonDock:DockingManager.LayoutItemTemplateSelector>  <avalonDock:DockingManager.theme>    <avalonDock:VS2010theme/>  </avalonDock:DockingManager.theme>  <avalonDock:LayoutRoot>    <avalonDock:LayoutPanel OrIEntation="Horizontal">      <avalonDock:LayoutAnchorablePane DockWIDth="400">        <avalonDock:LayoutAnchorable title="Scope(s) selection" x:name="PanelScopeSelection" IsVisible="True">          <scopeSelection:UserControlSelectStudyScope x:name="ToolScopeSelection"/>        </avalonDock:LayoutAnchorable>      </avalonDock:LayoutAnchorablePane>      <avalonDock:LayoutdocumentPane/>      <avalonDock:LayoutAnchorablePane DockWIDth="150">        <avalonDock:LayoutAnchorable title="PropertIEs" x:name="PanelScopePropertyGrID">          <!--<multisimAnalysis:UserControlPropertyGrID x:name="ToolPropertyGrID"  />-->          <xctk:PropertyGrID x:name="ToolPropertyGrID" Selectedobject="{Binding ActiveObject}" />        </avalonDock:LayoutAnchorable>      </avalonDock:LayoutAnchorablePane>    </avalonDock:LayoutPanel>  </avalonDock:LayoutRoot></avalonDock:DockingManager>

解决方法 我实际上找到了一个不可接受的解决方法.
真是扭曲了.

我只是作为参考.应该有一个干净的方法来做到这一点.

// ************************************************************************    private voID DockingManager_documentClosing(object sender,Xceed.Wpf.AvalonDock.documentClosingEventArgs e)    {        e.document.CanClose = false;        documentModel documentModel = e.document.Content as documentModel;        if (documentModel != null)        {            dispatcher.BeginInvoke(new Action(() => this.Model.documentItems.Remove(documentModel)),dispatcherPriority.Background);        }    }

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