Unable to LoadFromFile when DockSite is contained within a UserControl

Docking/MDI for WPF Forum

Posted 2 months ago by Michael Janulaitis
Version: 18.1.0675
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I have an MDI application that successfully saves and loads the docksite state for the main window, however; I have an embedded docksite within a usercontrol.  I subsrcibe to the IsOpen view model property which is triggered when document that contains the embedded docksite is closed via the document close button.  I am able to save the embedded docksite and verify the values are updated.  My view model sets the SerializationId to the name of the class.  When I load the saved state, the state is ignored and no exception if fired.

    <Grid>
        <docking:DockSite 
            x:Name="dockSite"            
            Margin="0"
            Padding="0"
            ToolWindowsHaveTabImages="True"
            ToolItemContainerStyle="{StaticResource ToolWindowStyle}"
			ToolItemTemplateSelector="{StaticResource ToolItemTemplateSelector}"
			ToolItemsSource="{Binding ToolViewModels}"
            >
            <docking:SplitContainer Orientation="Vertical">
                <docking:Workspace>
                    <DataGrid>
                    </DataGrid>
                </docking:Workspace>
            </docking:SplitContainer>
        </docking:DockSite>
    </Grid>
       public MyView()
        {
            InitializeComponent();
            LoadDockState();
        }

        private void UserControl_Loaded(object sender, RoutedEventArgs e)
        {           
            VM.PropertyChanged += VM_PropertyChanged;
        }

        private void VM_PropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
        {
            try
            {
                if (e.PropertyName == nameof(DocumentItemViewModel.IsOpen))
                {
                    if (!VM.IsOpen)
                    {
                        SaveDockState();
                    }
                }
            }
            catch (Exception)
            {

            }
        }

        private static string DockFilePath
        {
            get
            {
                return string.Format(@"{0}\{1}", MyPath.UserApplicationDataPath, DOCK_FILENAME);
            }
        }

        private void LoadDockState()
        {
            try
            {
                if (File.Exists(DockFilePath))
                {
                    new DockSiteLayoutSerializer().LoadFromFile(DockFilePath, dockSite);
                }
                else
                {
                    string layout = Properties.Resources.ViewDockManager;
                    new DockSiteLayoutSerializer().LoadFromString(layout, dockSite);
                }
            }
            catch (Exception ex)
            {
                Commands.DisplayException.Execute(ex);
            }
        }

        private void SaveDockState()
        {
            new DockSiteLayoutSerializer().SaveToFile(DockFilePath, dockSite);
        }

[Modified 2 months ago]

Comments (5)

Posted 2 months ago by Actipro Software Support - Cleveland, OH, USA
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Hello,

The first thing I'd try is to move the LoadDockState call to the first time the UserControl.Loaded event handler fires, instead of in the constructor.  Let's see if that helps.  If not, then it could be something else.


Actipro Software Support

Posted 2 months ago by Michael Janulaitis
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That was the first thing I tried.  That makes no difference.

Posted 2 months ago by Michael Janulaitis
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Also I have verified the view models are attached to the DockSite prior to loading the state.  I have tried loading the state with and without the view model applied to the control.

Posted 2 months ago by Michael Janulaitis
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Here is what the xml file looks like.  When I step through the code when the file is loaded I see the isopen in my MessageWindowViewModel is set to false.

<DockSiteLayout xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" SerializationFormat="ToolWindowsOnly" Version="2">
	<AutoHideHost />
	<Content xsi:type="SplitContainer" Orientation="Vertical" DockedSize="198,347.5">
		<UIElement xsi:type="ToolWindowContainer" DockedSize="198,341.5" SelectedWindowUniqueId="13b12bab-8758-49f1-9608-ca6e74aaeffb">
			<UIElement xsi:type="ToolWindowRef" UniqueId="13b12bab-8758-49f1-9608-ca6e74aaeffb" />
		</UIElement>
		<UIElement xsi:type="ToolWindowContainer" DockedSize="0,0" />
		<UIElement xsi:type="Workspace" />
	</Content>
	<RaftingHosts>
		<RaftingHost UniqueId="a036903b-b036-462c-9bf7-241f4a955d56" Location="2682,976" Size="200,683" WindowState="Normal">
			<AutoHideHost />
			<Content xsi:type="ToolWindowContainer" DockedSize="0,0">
				<UIElement xsi:type="Track" ContainerDockedSize="198,341.5" UniqueId="13b12bab-8758-49f1-9608-ca6e74aaeffb" />
			</Content>
		</RaftingHost>
	</RaftingHosts>
	<ToolWindows>
		<ToolWindow UniqueId="13b12bab-8758-49f1-9608-ca6e74aaeffb" SerializationId="MessageWindowViewModel" ContainerDockedSize="198,341.5" IsOpen="true" LastActiveDateTime="2019-04-02T13:45:10.0476243-06:00" State="Docked" />
	</ToolWindows>
</DockSiteLayout>

[Modified 2 months ago]

Posted 2 months ago by Michael Janulaitis
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Ah it's working now.  I'm not sure what I did.  Between making sure my view models were set and loading the file in the loaded event it is working.  Sorry for the cockpit error.

The latest build of this product (v2019.1 build 0681) was released 10 days ago, which was after the last post in this thread.

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