问题
I am starting with Windows 8 and I am trying to convert HTML to a RichTextBlock.
I have read that I could use this function : HtmlUtilities.ConvertToText in a TextBlock but I can't find a way to use this function in a RichTextBlock!
From what I understand and tried I can't extend the RichTextBlock so I can't apply this function everytime a RichTextBlock is called.
Also, I can't find any way to bind text to a RichTextBlock and building a parser just for simple HTML (I only want paragraphs and italics/bolds) seems an overkill. Also, I have no idea where I should do this parsing since I the RichTextBlock seems unextendable.
I can't use the WebView because I need transparency (and from what I have read the WebView doesn't have it).
EDIT
@mydogisbox made me see I was getting too far on my research.
I can use HtmlUtilities.ConvertToText in the getter of a property that I can bind in the RichTextBlock. I couldn't bind it because I was trying to do
<Run Text="{Binding TextHTML}" /> without a <Paragraph> tag.
However HtmlUtilities.ConvertToText doesn't preserve italics or bolds. Only paragraphs :/.
回答1:
I ended up using a package avaiable on gitHub that converts from HTML to a RickTextBlock.
Basiclly you only need to open the Package Manager Console (Tools > Library Package Manager > Package Manager Console) and install the package running Install-Package RichTextBlock.Html2Xaml.
Then you open RichTextBlockProperties.cs and you have the lines you need to copy. In my case I had to add the namespace:
xmlns:rtbx="using:EventTests.Common"
And then you can bind your property that has HTML using:
<RichTextBlock rtbx:Properties.Html="{Binding ...}"/>
Some problems and some solutions
A problem I have found with this library is how it handles simple html with no divs. Like:
<p>Testing <i>italic</i> and something more.</p>
<p>More testing </p>
This prints:
Testing italic and something more.
More testing
However, I wanted something like this:
Testing italic and something more.
More testing
So I had to wrap the second paragraph in a div (and all paragraphs except the first could be wrapped).
<p>Testing <i>italic</i> and something more.</p>
<div><p>More testing </p></div>
If you wrap the first paragraph then you will have an extra new line.
So far this is the best solution I have found. If you find better I apreciate it since I am testing and learning. If you find a better solution I will accept yours.
Be carefull
This approach will crash if you have symbols like "<" or "&" in your html. I suggest that you replace those chars before you try to use this library.
来源：https://stackoverflow.com/questions/13729540/convert-simple-html-to-a-richtextblock