RichTextBox添加工具条和textBox

[{"title":"（134个子文件2.2MB）RichTextBox添加工具条和textBox","children":[{"title":"RichTextBoxSamples.sln <span style='color:#111;'>951B</span>","children":null,"spread":false},{"title":"RichTextBoxSamples.suo <span style='color:#111;'>30.50KB</span>","children":null,"spread":false},{"title":"RichTextBoxSamples.csproj <span style='color:#111;'>5.87KB</span>","children":null,"spread":false},{"title":"App.xaml.cs <span style='color:#111;'>321B</span>","children":null,"spread":false},{"title":"Window1.xaml <span style='color:#111;'>8.51KB</span>","children":null,"spread":false},{"title":"......","children":null,"spread":false},{"title":" <span style='color:steelblue;'>文件过多，未全部展示</span>","children":null,"spread":false}],"spread":true}]