自己封装的类用于操作RichTextBox内容，方便获取和设置RichTextBox内容

该类包含两个静态方法，第一个参数为需要获取或设置的RichTextBox，第二个参数List<Object> obj为放置内容的List，可存放图片（Image）或文字（Run），若某位置为空时，则添加新的段落（即添加换行），很方便       

///<summary>
    ///解析富文本框
    ///</summary>
    ///<param name="ImgPath">图标路径</param>
    public class RichTextBoxParseHelper
    {
        ///<summary>
        ///设置富文本框内内容，obj*可设两种类型数据，Image(图片)和Run(文字),若某位置为空则添加换行
        ///</summary>
        ///<param name="mainBox">富文本框</param>
        ///<param name="obj">填充的内容</param>
        static public void SetBoxContent(System.Windows.Controls.RichTextBox mainBox, ref List<Object> obj)
        {
            FlowDocument document = mainBox.Document;
            Paragraph para = new Paragraph();
            document.Blocks.Add(para);
            for (int index = 0; index < obj.Count; index++)
            {
                if (obj[index] == null)
                {
                    //添加新段落
                    para = new Paragraph();
                    document.Blocks.Add(para);
                }
                else
                {
                    //文字内容
                    if (obj[index].GetType().Equals(typeof(Run)))
                    {
                        Run newrun = new Run();
                        newrun.Text = (obj[index] as Run).Text;
                        para.Inlines.Add(newrun);
                    }
                    //图片内容
                    else if (obj[index].GetType().Equals(typeof(System.Windows.Controls.Image)))
                    {
                        System.Windows.Controls.Image newImg = new System.Windows.Controls.Image();
                        newImg.Source = (obj[index] as System.Windows.Controls.Image).Source;
                        newImg.Width = 100;
                        newImg.Height = 100;
                        //添加图片
                        InlineUIContainer newContain = new InlineUIContainer();
                        newContain.Child = newImg;
                        para.Inlines.Add(newContain);
                    }
                }
            }
        }

        ///<summary>
        ///获取富文本框内内容,保存在obj中,obj内共有两种类型数据（Image图片和Run文字）,某位置为空时代表换行
        ///</summary>
        ///<param name="mainBox">富文本框</param>
        ///<param name="obj">保存文本框内容</param>       
        static public void GetBoxContent(System.Windows.Controls.RichTextBox mainBox,ref List<Object> obj)
        {
            FlowDocument document = mainBox.Document;
            int paraBreak = 0;
            for (int i = 0; i < document.Blocks.Count; i++)
            {
                if ((document.Blocks.ElementAt(i)).GetType().Equals(typeof(Paragraph)))
                {
                    Paragraph para = document.Blocks.ElementAt(i) as Paragraph;
                    //添加回车
                    if (i != 0 && i != document.Blocks.Count)
                    {
                        //添加空数据作为换行标记
                        obj.Add(null);
                    }
                    for (int j = 0; j < para.Inlines.Count; j++)
                    {
                        if (para.Inlines.ElementAt(j).GetType().Equals(typeof(InlineUIContainer)))
                        {
                            InlineUIContainer childInline = para.Inlines.ElementAt(j) as InlineUIContainer;
                            obj.Add(childInline.Child);

                        }
                        else if (para.Inlines.ElementAt(j).GetType().Equals(typeof(Run)))
                        {
                            Run childRun = para.Inlines.ElementAt(j) as Run;
                            obj.Add(childRun);
                        }
                        paraBreak++;
                    }

                }
                else if ((document.Blocks.ElementAt(i)).GetType().Equals(typeof(BlockUIContainer)))
                {
                    BlockUIContainer uicontainer = document.Blocks.ElementAt(i) as BlockUIContainer;
                    obj.Add(uicontainer.Child);
                }
            }
        }
    }