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我正在WPF中创建一个文本编辑器程序，我需要制作一个Plain按钮，它的目的是删除格式（粗体，在RichTextBox的文本的斜体，如Arial字体，字体大小）如何从richtextbox中删除任何格式（粗体，斜体，字体，字体大小）WPF
这是我到目前为止的代码：
<Window x:Class="TextEditor.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:TextEditor"
Title="Text Editor" Height="480" Width="640">
<DockPanel>
<Menu DockPanel.Dock="Top">
<MenuItem Header="_File" Name="Menu">
<MenuItem Header="New" Name="New"
Click="New_Click"
/>
<MenuItem Header="Save" Name="Save"
Click="Save_Click"
/>
<DockPanel DockPanel.Dock="Top">
<ToolBar>
<ToggleButton x:Name="boldButton"
ToolTip="Bold"
Command="{x:Static EditingCommands.ToggleBold}" CommandTarget="{Binding ElementName=_richTextBox}">
<Image Source="Icons/text_bold.png"
Height="25"
Width="25"/>
</ToggleButton>
<ToggleButton x:Name="italicButton"
ToolTip="Italic"
Command="{x:Static EditingCommands.ToggleItalic}" CommandTarget="{Binding ElementName=_richTextBox}">
<Image Source="Icons/text_italic.png"
Height="25"
Width="25"/>
</ToggleButton>
<ToggleButton x:Name="PlainButton"
ToolTip="Make the text plain"
Click="PlainButton_Click">
PlainText
</ToggleButton>
<Button x:Name="BackgroundButton"
ToolTip="Change the background of the textbox"
Click="BackgroundButton_Click">
Change the background
</Button>
<Separator/>
<ComboBox x:Name="fonts"
MinWidth="100"
DataContext="{x:Static Fonts.SystemFontFamilies}"
ItemsSource="{Binding}"
ToolTip="Font"
SelectionChanged="Font_SelectionChanged"/>
<ComboBox x:Name="fontSize"
MinWidth="40"
ToolTip="Font Size"
>
</ComboBox>
</ToolBar>
</DockPanel>
<StatusBar DockPanel.Dock="Bottom">
<TextBlock x:Name="status"/>
</StatusBar>
<RichTextBox x:Name="body"
FontSize="{Binding ElementName=fontSize, Path=SelectedItem}"
SpellCheck.IsEnabled="True"
AcceptsReturn="True"
AcceptsTab="True"
SelectionChanged="body_SelectionChanged"
BorderThickness="0 2 0 0"/>
</DockPanel>
升C脚本：
public MainWindow()
{
InitializeComponent();
for (double i = 8; i <= 48; i += 2)
{
fontSize.Items.Add(i);
}
}
private void body_SelectionChanged(object sender, RoutedEventArgs e)
{
object temp = body.Selection.GetPropertyValue(Inline.FontFamilyProperty);
fonts.SelectedItem = temp;
}
private void New_Click(object sender, RoutedEventArgs e)
{
body.Document.Blocks.Clear();
}
private void Save_Click(object sender, RoutedEventArgs e)
{
SaveFileDialog sfd = new SaveFileDialog();
sfd.Filter = "Text file|*.txt";
sfd.FileName = "Untitled document";
if (sfd.ShowDialog() == true)
{
FileStream fileStream = new FileStream(sfd.FileName, FileMode.Create);
TextRange range = new TextRange(body.Document.ContentStart, body.Document.ContentEnd);
range.Save(fileStream, DataFormats.Text);
}
}
private void Font_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
if (fonts.SelectedItem != null)
body.Selection.ApplyPropertyValue(Inline.FontFamilyProperty, fonts.SelectedItem);
}
private void PlainButton_Click(object sender, RoutedEventArgs e)
{
//the code of the plain button
}
private void BackgroundButton_Click(object sender, RoutedEventArgs e)
{
body.Background = Brushes.Yellow;
}