How can I copy the contents of a WPF FlowDocument InlineUIContainer?

Question

I have a WPF FlowDocument in which there are several InlineUIContainers, these are simple InlineUIContainers that contain a stylized button with some text in Button.Content. When I copy text and an InlineUIContainer containing a button from a FlowDocument to a TextBox, the button is not copied.

You can somehow convert the built-in button or convert the button to text in the inserted text data. I tried to use the FlowDocument.DataObject.Copying event, but I cannot find any good samples on how to use this or even if this is the right direction.

thanks

Answer 1

, - :

public class MyRichTextBox : RichTextBox
{
    public MyRichTextBox()
        : base()
    {
        CommandManager.RegisterClassCommandBinding(typeof(MyRichTextBox),
                                                   new CommandBinding(ApplicationCommands.Copy, OnCopy, OnCanExecuteCopy));
    }

    private static void OnCanExecuteCopy(object target, CanExecuteRoutedEventArgs args)
    {
        MyRichTextBox myRichTextBox = (MyRichTextBox)target;
        args.CanExecute = myRichTextBox.IsEnabled && !myRichTextBox.Selection.IsEmpty;
    }

    private static void OnCopy(object sender, ExecutedRoutedEventArgs e)
    {
        MyRichTextBox myRichTextBox = (MyRichTextBox)sender;
        Clipboard.SetText(GetInlineText(myRichTextBox));
        e.Handled = true;
    }

    private static string GetInlineText(RichTextBox myRichTextBox)
    {
        StringBuilder sb = new StringBuilder();
        foreach (Block b in myRichTextBox.Document.Blocks)
        {
            if (b is Paragraph)
            {
                foreach (Inline inline in ((Paragraph)b).Inlines)
                {
                    if (inline is InlineUIContainer)
                    {
                        InlineUIContainer uiContainer = (InlineUIContainer)inline;
                        if (uiContainer.Child is Button)
                            sb.Append(((Button)uiContainer.Child).Content);
                    }
                    else if (inline is Run)
                    {
                        Run run = (Run)inline;
                        sb.Append(run.Text);
                    }
                }
            }
        }
        return sb.ToString();
    }
}

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