带颜色的Richtextbox并保存，将带颜色的Richtextbox加载到wpf c#中的rtf文件中

Question

如何制作一个支持颜色的richtextbox，并使用wpf和c#将richtextbox内容保存在rtf文件中？我希望用户可以在Richtext框中选择一个单词，并为其指定一种特殊的字体颜色。用户可以将具有特殊颜色的richtextbox保存到.rtf文件中，然后将其加载回具有特殊颜色。

Answer 1

这里有一些东西可以让你开始：

• 写一个文件名，路径类似于"；C： \test.rtf">
• 点击"；打开"；即使文件是新的
• 在下面添加一些文本"文件">
• 选择一个单词，然后单击"…"；。。添加颜色"按钮
• 保存文件
• 重新启动程序并打开文件。文本应显示在"文档"字段中

XAML：

<Window x:Class="WpfApp11.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:WpfApp11"
mc:Ignorable="d"
Title="MainWindow" Height="450" Width="800">
<Grid>
<StackPanel>
<StackPanel Orientation="Horizontal">
<TextBlock Text="File path: "/>
<TextBox x:Name="filePathBox" Width="300" Margin="5,0,0,0"/>
</StackPanel>
<Button x:Name="open" Click="open_Click" Content="Open" Width="300" Margin="0,5,0,0" HorizontalAlignment="Left"/>
<TextBlock Text="Document" Margin="0,5,0,0"/>
<RichTextBox x:Name="richTextBox" Margin="0,5,0,0"/>
<Button x:Name="addColor" Click="addColor_Click" Content="Select and press this button to add color to text" Width="300" Margin="0,5,0,0" HorizontalAlignment="Left"/>
<Button x:Name="save" Click="save_Click" Content="Save" Width="300" Margin="0,5,0,0" HorizontalAlignment="Left"/>
<TextBlock Text="Status"/>
<TextBlock x:Name="statusBox" Width="300" Margin="0,5,0,0" HorizontalAlignment="Left"/>
</StackPanel>
</Grid>
</Window>

代码隐藏(xaml.cs(

using System;
using System.IO;
using System.Windows;
using System.Windows.Documents;
using System.Windows.Media;
namespace WpfApp11
{
public partial class MainWindow : Window
{
public MainWindow()
{
DataContext = this;
InitializeComponent();
}
private void addColor_Click(object sender, RoutedEventArgs e)
{
richTextBox.Selection.ApplyPropertyValue(ForegroundProperty, new SolidColorBrush(Colors.Red));
}
private void open_Click(object sender, RoutedEventArgs e)
{
try
{
TextRange range;
FileStream fStream;
string filename = filePathBox.Text;
if (File.Exists(filename))
{
range = new TextRange(richTextBox.Document.ContentStart, richTextBox.Document.ContentEnd);
using (fStream = new FileStream(filename, FileMode.OpenOrCreate))
{
range.Load(fStream, DataFormats.Rtf);
fStream.Close();
}
statusBox.Text = "File opened.";
}
else
{
statusBox.Text = "File new.";
}
}
catch (Exception excep)
{
statusBox.Text = excep.Message;
}
}
private void save_Click(object sender, RoutedEventArgs e)
{
try
{
TextRange range;
FileStream fStream;
range = new TextRange(richTextBox.Document.ContentStart, richTextBox.Document.ContentEnd);
string filename = filePathBox.Text;
using (fStream = new FileStream(filename, FileMode.Create))
{
range.Save(fStream, DataFormats.Rtf);
fStream.Close();
}
statusBox.Text = "File saved.";
}
catch (Exception excep)
{
statusBox.Text = excep.Message;
}
}
}
}