让WPF和SL控件同时支持绑定和赋值

前台：

<UserControl x:Name="msl"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:Control="clr-namespace:Sl.MELearning.EnterpriseLibrary.Controls.ControlBase"
    xmlns:vm="clr-namespace:Sl.MELearning.EnterpriseLibrary.Controls.ViewModel"
    xmlns:cv="clr-namespace:Sl.MELearning.EnterpriseLibrary.Controls.Converter"
    xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity"
    xmlns:ei="http://schemas.microsoft.com/expression/2010/interactions"
    x:Class="Sl.MELearning.EnterpriseLibrary.Controls.SingleChoice"
    mc:Ignorable="d"
    d:DesignHeight="300" d:DesignWidth="400">
    <UserControl.Resources >
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="Styles/DictionaryChoice.xaml" />
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
    </UserControl.Resources>
    <Grid x:Name="LayoutRoot" Background="White">
        <Grid.RowDefinitions>
            <RowDefinition Height="auto"></RowDefinition>
            <RowDefinition Height="auto"></RowDefinition>
            <RowDefinition Height="15"></RowDefinition>
            <RowDefinition Height="0"></RowDefinition>
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="40"/>
            <ColumnDefinition Width="40"/>
            <ColumnDefinition Width="*"/>
        </Grid.ColumnDefinitions>

        
        <TextBlock Text="{Binding Choice.IndexInPaper, Mode=TwoWay, ElementName=msl}" Grid.Row="0" Grid.Column="0" Width="30" Height="30" Margin="16,12,0,0">
        </TextBlock>

        <Control:PaperRichText x:Name="prtQuesiton" Grid.Row="0" Grid.Column="1" Grid.ColumnSpan="2" Xaml="{Binding Choice.ChoiceQuestion,  Mode=TwoWay, ElementName=msl}" IsReadOnly="True"  BorderShowed="False"  ScrollViewer.HorizontalScrollBarVisibility="Hidden"  ScrollViewer.VerticalScrollBarVisibility="Hidden" Margin="5,5,5,5">
        </Control:PaperRichText>

        <ListBox x:Name="LbSingleSelection" Grid.Row="1" x:FieldModifier="public" ItemsSource="{Binding Choice.ChoiceStems, ElementName=msl}" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" ScrollViewer.HorizontalScrollBarVisibility="Hidden"  ScrollViewer.VerticalScrollBarVisibility="Hidden"  Grid.ColumnSpan="3" Width="Auto" ItemContainerStyle="{StaticResource ListBoxItemStyle1}" BorderThickness="0">
            <ListBox.ItemTemplate>
                <DataTemplate>
                    <Grid>
                        <Grid.RowDefinitions>
                            <RowDefinition Height="auto"/>
                        </Grid.RowDefinitions>
                        <Grid.ColumnDefinitions>
                            <ColumnDefinition Width="40"/>
                            <ColumnDefinition Width="*"/>
                        </Grid.ColumnDefinitions>

                        <Border Grid.Column="0" Grid.Row="0" Width="25" Height="25" Cursor="Hand" CornerRadius="25" BorderThickness="2" Background="{Binding Selected, Converter={StaticResource borderBackgroundConvert}}" BorderBrush="{Binding Selected, Converter={StaticResource borderColorConvert}}">
                            <TextBlock Text="{Binding Path=StemABCDShowed, Mode=TwoWay}" FontSize="12"  Width="25" Height="25" Cursor="Hand" Foreground="{Binding Selected, Converter={StaticResource borderColorConvert}}" Padding="8,3,0,0" HorizontalAlignment="Center" VerticalAlignment="Center"/>
                            <i:Interaction.Triggers>
                                <i:EventTrigger EventName="MouseLeftButtonDown" >
                                    <i:InvokeCommandAction Command="{Binding DataContext.Clicked, Mode=TwoWay, ElementName=tbb}" CommandParameter="{Binding}">
                                    </i:InvokeCommandAction>
                                </i:EventTrigger>
                            </i:Interaction.Triggers>
                        </Border>

                        <Control:PaperRichText x:Name="prtListItem" Grid.Column="1" Grid.Row="0" Xaml="{Binding Path=Stem}" IsReadOnly="True"  BorderShowed="False" Cursor="Hand" Width="{Binding Width, ElementName=msl, Converter={StaticResource choiceWidthConverter}}" >
                            <i:Interaction.Triggers>
                                <i:EventTrigger EventName="Clicked" >
                                    <i:InvokeCommandAction Command="{Binding DataContext.Clicked, Mode=TwoWay, ElementName=tbb}" CommandParameter="{Binding}">
                                    </i:InvokeCommandAction>
                                </i:EventTrigger>
                            </i:Interaction.Triggers>
                        </Control:PaperRichText>

                    </Grid>
                </DataTemplate>
            </ListBox.ItemTemplate>
        </ListBox>
        <Rectangle Height="10" VerticalAlignment="bottom"  Grid.Row="2" Grid.ColumnSpan="3" Style="{StaticResource ChoiceRectangle}">
        </Rectangle>
        <TextBlock Height="0" Grid.Row="3" Grid.ColumnSpan="3" x:Name="tbb">
            <TextBlock.DataContext>
                <vm:SingleChoiceViewModel x:Name="singleChoiceViewModel" ></vm:SingleChoiceViewModel>
            </TextBlock.DataContext>
        </TextBlock>
    </Grid>
</UserControl>

后台：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using Sl.MELearning.EnterpriseLibrary.Controls.Core;
using Sl.MELearning.EnterpriseLibrary.Controls.ViewModel;
using Sl.MELearning.EnterpriseLibrary.Controls.UIModel;

namespace Sl.MELearning.EnterpriseLibrary.Controls
{
    public partial class SingleChoice : UserControl
    {
        public SingleChoice()
        {
            InitializeComponent();
            this.Loaded += new RoutedEventHandler(SingleChoice_Loaded);

        }

        void SingleChoice_Loaded(object sender, RoutedEventArgs e)
        {
            (tbb.DataContext as SingleChoiceViewModel).Choice = Choice;
        }

        public static readonly DependencyProperty ChoiceProperty = DependencyProperty.Register("Choice", typeof(Choice), typeof(SingleChoice), new PropertyMetadata(null));
        public Choice Choice
        {
            get
            {
                return (Choice)GetValue(ChoiceProperty);
            }
            set
            {
                SetValue(ChoiceProperty, value);
                (tbb.DataContext as SingleChoiceViewModel).Choice = value;
            }
        }

    }


}

注意：

SingleChoice_Loaded

和

set中的

(tbb.DataContext as SingleChoiceViewModel).Choice = value;

第一句是为了绑定的时候。

下面那句是为了直接赋值。