SHJX_GM/SHJX.Service.WorkFlowEdit/MainWindow.xaml

<Window
    x:Class="FlowWorkEditDemo.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="clr-namespace:WorkFlowEdit.Diagrams"
    Title="MainWindow"
    Width="800"
    Height="450">
    <DockPanel>
        <StackPanel
            Width="200"
            Margin="0,0,10,0"
            DockPanel.Dock="Left">
            <StackPanel Margin="0,10,0,10">
                <TextBlock Margin="0,0,0,10" Text="Zoom:" />
                <Slider
                    x:Name="_zoom"
                    Maximum="10"
                    Minimum="0.1"
                    Value="1" />
                <StackPanel Margin="0,10,0,10">
                    <TextBlock Margin="0,0,0,10" Text="Toolbox:" />
                    <Border BorderBrush="Black" BorderThickness="1">
                        <ItemsControl x:Name="_toolbox">
                            <ItemsControl.ItemsPanel>
                                <ItemsPanelTemplate>
                                    <WrapPanel />
                                </ItemsPanelTemplate>
                            </ItemsControl.ItemsPanel>
                        </ItemsControl>
                    </Border>
                </StackPanel>
            </StackPanel>
        </StackPanel>

        <Border BorderBrush="Black" BorderThickness="1">
            <d:DiagramScrollView>
                <d:DiagramView
                    x:Name="_editor"
                    AllowDrop="True"
                    DocumentSize="2000,2000"
                    GridCellSize="20,20"
                    Zoom="{Binding ElementName=_zoom, Path=Value}" />
            </d:DiagramScrollView>
        </Border>
    </DockPanel>
</Window>