WPF中的RichTextBox

原文链接：http://blog.csdn.net/wuzhengqing1/article/details/7010902

取出richTextBox里面的内容

第一种方法：将richTextBox的内容以字符串的形式取出

string str = System.Windows.Markup.XamlWriter.Save(richTextBox.Document);

第二种方法：将richTextBox的类容以二进制数据的方法取出

     FlowDocument     doc    = richTextBox.Document;
     System.IO.Stream stream = new System.IO.MemoryStream();
     System.Windows.Markup.XamlWriter.Save(doc, stream);
     byte[] data = new byte[stream.Length];
     stream.Position = ;
     stream.Read(data, , data.Length);
     stream.Close();

赋值给richTextBox

第一种方法：将字符串转换为数据流赋值给richTextBox中

  System.IO.StringReader sr = new System.IO.StringReader(str);
  System.Xml.XmlReader   xr = System.Xml.XmlReader.Create(sr);
  richTextBox1.Document     = (FlowDocument)System.Windows.Markup.XamlReader.Load(xr);

第二种方法：将二进制数据赋值给richTextBox

   System.IO.Stream ss  = new System.IO.MemoryStream(data);
   FlowDocument     doc = System.Windows.Markup.XamlReader.Load(ss) as FlowDocument;
   ss.Close();
   richTextBox1.Document = doc;

清空RichTextBox的方法

         System.Windows.Documents.FlowDocument doc = richTextBox.Document;
         doc.Blocks.Clear();

如何将一个String类型的字符串赋值给richTextBox

myRTB.Document    = new FlowDocument(new Paragraph(new Run(myString)));
FlowDocument doc  = new FlowDocument();
Paragraph    para = new Paragraph();//------Paragraph 类似于 html 的 P 标签
Run          run  = new Run(myString);//----Run 是一个 Inline 的标签
para.Inlines.Add(run);
doc.Blocks.Add(para);
myRTB.Document = doc;

如何将richTextBox中的内容以rtf的格式完全取出

string rtf = string.Empty;
TextRange textRange = new TextRange(richTextBox.Document.ContentStart, 
                                    richTextBox.Document.ContentEnd);
using (System.IO.MemoryStream ms = new System.IO.MemoryStream())
{
    textRange.Save(ms, System.Windows.DataFormats.Rtf);
    ms.Seek(, System.IO.SeekOrigin.Begin);
    System.IO.StreamReader sr = new System.IO.StreamReader(ms);
    rtf = sr.ReadToEnd();
}

RichTextBox的操作：

       using System.Windows.Input;
       using System.Windows.Documents;
       
       //---复制，剪切，粘贴，撤销，重做
       ToolBarCopy.Command  = ApplicationCommands.Copy;
       ToolBarCut.Command   = ApplicationCommands.Cut;
       ToolBarPaste.Command = ApplicationCommands.Paste;
       ToolBarUndo.Command  = ApplicationCommands.Undo;
       ToolBarRedo.Command  = ApplicationCommands.Redo;
       //---文字居中/右/左
       ToolBarContentCenter.Command = EditingCommands.AlignCenter;
       ToolBarContentRight.Command  = EditingCommands.AlignRight;
       ToolBarContentLeft.Command   = EditingCommands.AlignLeft;
       //---有序/无序排列
       ToolBarNumbering.Command = EditingCommands.ToggleNumbering;
       ToolBarBullets.Command   = EditingCommands.ToggleBullets;//---字体变大
       int fontSize = Convert.ToInt32(richTextBox.Selection.GetPropertyValue(
                                         TextElement.FontSizeProperty));
       fontSize++;
       richTextBox.Selection.ApplyPropertyValue(TextElement.FontSizeProperty, 
                                                fontSize.ToString());