serein-flow/WorkBench/Node/View/ExpOpNodeControl.xaml

<local:NodeControlBase x:Class="Serein.Workbench.Node.View.ExpOpNodeControl"
             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:Serein.Workbench.Node.View"
                       MaxWidth="300">
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>
        <!--<TextBlock Grid.Row="0" Text=""></TextBlock>-->

        <StackPanel Grid.Row="0" Orientation="Vertical" Background="LightSteelBlue">
            <TextBlock Grid.Row="2" Text="表达式"></TextBlock>
            <TextBox Text="{Binding Expression, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" HorizontalAlignment="Stretch"></TextBox>
        </StackPanel>
    </Grid>
</local:NodeControlBase>