WPF FlowDocument to InlineCollection

Question

I want to create a small in Place Editor in a WPF Application for TextBox Texts. For this I want to use the RichTextBox. As the RichTextBox works with a FlowDocument, and the TextBlock with a InlineCollection, this does not work. Is there a easy way to Convert the RichtextBox Document to a InlineCollection? (If I only allow RTB Content wich is supported in a Inline?)

Answer 1

Something like the following extension method could be used to extract all Inlines from a FlowDocument. You might need to add some extra whitespace inlines to separate the paragraphs and sections.

public static class FlowDocumentEx
{
    public static ICollection<Inline> GetInlines(this FlowDocument doc)
    {
        return GetInlines(doc.Blocks);
    }

    public static ICollection<Inline> GetInlines(TextElementCollection<Block> blocks)
    {
        var inlines = new List<Inline>();

        foreach (var block in blocks)
        {
            if (block is Paragraph)
            {
                inlines.AddRange(((Paragraph)block).Inlines);
            }
            else if (block is Section)
            {
                inlines.AddRange(GetInlines(((Section)block).Blocks));
            }
        }

        return inlines;
    }
}

You would use it like this:

textBlock.Inlines.Clear();
textBlock.Inlines.AddRange(richTextBox.Document.GetInlines());