WPF-20：richtextbox相關操作

WPF中的richtextbox與winform中的richtextbox的使用不同，看看下面的基本操作：

一、取出richTextBox裡面的內容
 (1)將richTextBox的內容以字串的形式取出

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

 (2)將richTextBox的類容以位元據的方法取出

     FlowDocument document = richTextBox.Document;      System.IO.Stream s = new System.IO.MemoryStream();       System.Windows.Markup.XamlWriter.Save(document, s);               byte[] data = new byte[s.Length];      s.Position = 0;      s.Read(data, 0, data.Length);       s.Close(); 

二、richTextBox賦值
 (1)將字串轉換為資料流賦值給richTextBox中  

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

(2)將位元據賦值給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;

三、清空RichTextBox的方法

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

四、如何將一個String類型的字串賦值給richTextBox

myRTB.Document = new FlowDocument(new Paragraph(new Run(myString))); FlowDocument doc = new FlowDocument(); Paragraph p = new Paragraph();  // Paragraph 類似於 html 的 P 標籤 Run r = new Run(myString);      // Run 是一個 Inline 的標籤 p.Inlines.Add(r); doc.Blocks.Add(p); myRTB.Document = doc;

五、將richTextBox中的內容以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(0, System.IO.SeekOrigin.Begin);                 System.IO.StreamReader sr = new System.IO.StreamReader(ms);                 rtf = sr.ReadToEnd();             }

六、其他動作

 複製：   ToolBarCopy.Command = System.Windows.Input.ApplicationCommands.Copy; 剪下：   toolBarCut.Command = System.Windows.Input.ApplicationCommands.Cut; 粘貼：   ToolBarPaste.Command = System.Windows.Input.ApplicationCommands.Paste; 撤銷：   ToolBarUndo.Command = System.Windows.Input.ApplicationCommands.Undo; 複原：   ToolBarRedo.Command = System.Windows.Input.ApplicationCommands.Redo; 文字置中：  toolBarContentCenter.Command = System.Windows.Documents.EditingCommands.AlignCenter; 文字居右：  toolBarContentRight.Command = System.Windows.Documents.EditingCommands.AlignRight; 文字居左：  toolBarContentLeft.Command = System.Windows.Documents.EditingCommands.AlignLeft; 有序排列：  ToolBarNumbering.Command = System.Windows.Documents.EditingCommands.ToggleNumbering; 無序排列：  ToolBarBullets.Command = System.Windows.Documents.EditingCommands.ToggleBullets; 字型變大：             int fontSize = Convert.ToInt32(richTextBox.Selection.GetPropertyValue(TextElement.FontSizeProperty));             fontSize++;             richTextBox.Selection.ApplyPropertyValue(TextElement.FontSizeProperty, fontSize.ToString());