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

来源：互联网发布：淘宝神笔怎么取消编辑：程序博客网时间：2024/06/04 18:36

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中共可设两种类型数据，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);
              }
          }
      }
}

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