Silverlight RichTextBox 自定义富文本框

核心代码：

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 System.Windows.Navigation;
using System.Windows.Media.Imaging;
using System.Collections.ObjectModel;
namespace RichTextBoxDemo
{
    publicpartialclass MainPage : UserControl 
    {
        private List<String> list =new List<string>();
        private Image selectedImage =new Image();
        private CwChoosePic childW;
        private CwChooseLink cl;
        public MainPage()
        {
            InitializeComponent();
            //绑定字体样式数据
            ObservableCollection<FontFamily> fonts =new ObservableCollection<FontFamily>();
            fonts.Add(new FontFamily("Arial"));
            fonts.Add(new FontFamily("Courier New"));
            fonts.Add(new FontFamily("Times New Roman"));
            fonts.Add(new FontFamily("宋体"));
            MyComboBox.DataContext = fonts;
            MyComboBox.SelectedIndex =0;
            //绑定字体大小
            ObservableCollection<Double> fontsize =new ObservableCollection<double>();
            for (int i =8; i <=50; i +=2)
            {
                fontsize.Add(i);
            }
            SizeComboBox.DataContext = fontsize;
            SizeComboBox.SelectedIndex =0;
            //为ComboBox绑定颜色画刷
            ObservableCollection<SolidColorBrush> brush =new ObservableCollection<SolidColorBrush>();
            brush.Add(new SolidColorBrush(Colors.Red));
            brush.Add(new SolidColorBrush(Colors.Blue));
            brush.Add(new SolidColorBrush(Colors.Green));
            this.ColorComboBox.ItemsSource = brush;
            this.ColorComboBox.SelectedIndex =0;
        }
        privatevoid btn_Blod_Click(object sender, RoutedEventArgs e)
        {
            //字体加粗
            FontWeight fw = (FontWeight)this.richTextBox.Selection.GetPropertyValue(TextElement.FontWeightProperty);
            if (fw == FontWeights.Bold)
            {
                this.richTextBox.Selection.ApplyPropertyValue(TextElement.FontWeightProperty, FontWeights.Normal);
            }
            else
            {
                this.richTextBox.Selection.ApplyPropertyValue(TextElement.FontWeightProperty, FontWeights.Bold);
            }
        }
        privatevoid btn_Italic_Click(object sender, RoutedEventArgs e)
        {
            //字体加倾斜
            FontStyle fs = (FontStyle)this.richTextBox.Selection.GetPropertyValue(TextElement.FontStyleProperty);
            if (fs == FontStyles.Italic)
            {
                this.richTextBox.Selection.ApplyPropertyValue(TextElement.FontStyleProperty, FontStyles.Normal);
            }
            else
            {
                this.richTextBox.Selection.ApplyPropertyValue(TextElement.FontStyleProperty, FontStyles.Italic);
            }
        }
        privatevoid MyComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            //更改字体样式
this.richTextBox.Selection.ApplyPropertyValue(TextElement.FontFamilyProperty, (FontFamily)MyComboBox.SelectedItem);
        }
        privatevoid SizeComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            //更改字体大小
this.richTextBox.Selection.ApplyPropertyValue(TextElement.FontSizeProperty, this.SizeComboBox.SelectedItem);
        }
        privatevoid ColorComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            //更改字体颜色
this.richTextBox.Selection.ApplyPropertyValue(TextElement.ForegroundProperty, (SolidColorBrush) this.ColorComboBox.SelectedItem);
        }
        privatevoid btn_AddImage_Click(object sender, RoutedEventArgs e)
        {
            //从ChildWindow控件中获取图片，从而添加到编辑框
            childW =new CwChoosePic();
            childW.Show();
            //在关闭时出发事件
            childW.Closed +=new EventHandler(childW_Closed);
        }
        void childW_Closed(object sender, EventArgs e)
        {
            Paragraph pg =new Paragraph();
            InlineUIContainer container =new InlineUIContainer();
            container.Child = childW.GetSelectImage();
            pg.Inlines.Add(container);
            this.richTextBox.Blocks.Add(pg);
        }
        privatevoid btn_AddLink_Click(object sender, RoutedEventArgs e)
        {
            //从ChildWindow控件中获取链接信息，从而添加到编辑框
            cl =new CwChooseLink();
            cl.Show();
            //在关闭时出发事件
            cl.Closed +=new EventHandler(cl_Closed);
        }
        void cl_Closed(object sender, EventArgs e)
        {
            //增加段落
            Paragraph pg =new Paragraph();
            pg.Inlines.Add( cl.GetHyperlink());
            this.richTextBox.Blocks.Add(pg);
        }
    }
}

效果截图：