How can I hide a Paragraph in a FlowDocument?

Question

Is there any way to use databinding to show or hide a Paragraph within a FlowDocument? (I want to use MVVM, but with a FlowDocument as my view.)

Paragraph doesn't have a Visibility property. I'm not sure what else to look for.

Answer 1

I tried Chris Bova's answer, but it had a couple problems:

1. Text selection didn't work right
2. The text inside didn't flow like a paragraph

My solution was to add and remove the paragraph from the flow document.

The steps are:

1. Name the flow document (ie flowDocument)
2. Name the item before the paragraph you want to hide (ie previousBlock)
3. Name the paragraph you want to hide (ie hideParagraph)

Then:

        if (<hide paragraph>)
        {
            if (previousBlock.NextBlock == hideParagraph)
            {
                flowDocument.Blocks.Remove(hideParagraph);
            }
        }
        else
        {
            if (previousBlock.NextBlock != hideParagraph)
            {
                flowDocument.Blocks.InsertAfter(previousBlock, hideParagraph);
            }
        }