Silverlight 4 RichTextBox Bind Data using DataContext

Question

I am working with Silverlight 4 and trying to put my test apps multilingual but I am having some trouble when I arrive to the "RichTextBox" control. I am able to bind it properly by doing back-code (c#), but when trying using the "DataContext" attributes I am not able to load it at all.

I have created a FormatConverter that return a Block (paragraph) for testing and my code where I have my RichTextBox looks like:

   <RichTextBox x:Name="rtaTest" BorderThickness="0" IsReadOnly="True" UseLayoutRounding="True" 
DataContext="{Binding Source={StaticResource Localization}, Path=Home.MainContent, Converter={StaticResource ParagraphFormatConverter}}">
    </RichTextBox>

I am wondering if there is a way of binding a RichTextBox from the XAML.

I'm not quite seeing what you goal is to assign to the DataContext — AnthonyWJones, Feb 16 '10 at 14:19
It is because I want to put in my rich text area different localization (french/english/etc.) but I want to bind my blocks when I load the page. Sorry if i'm not clear... my english is not my first language. — Nordes, Mar 10 '10 at 11:08

score 5 · Answer 1 · answered Sep 09 '10 at 04:31

5

Run seems to support databinding in SL4, as in:

<RichTextBox>
  <Paragraph>
    <Run Text="{Binding Path=LineFormatted}" />
  </Paragraph>
</RichTextBox>

answered Sep 09 '10 at 04:31

Jay Borseth

1,894
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score 1 · Accepted Answer · answered Feb 16 '10 at 14:22

I think you may be a little confused about the used of the DataContext. You might for example have some Rich text where some children of one or more InlineUIContainer elements may retrieve their text from a property of some object. You would assign the object to the DataContext.

Whilst I'm not quite sure what you were expecting to achieve but I suspect that what you really need is for your converter to actually return a BlocksCollection (even if it just contains the single Block you were originaly returning) and then to bind as:-

<RichTextArea x:Name="rtaTest" BorderThickness="0" IsReadOnly="True"
 UseLayoutRounding="True"
 Blocks="{Binding Source={StaticResource Localization},
   Path=Home.MainContent, Converter={StaticResource ParagraphFormatConverter}}" />

score 1 · Answer 3 · answered May 26 '10 at 14:43

1

This FillFromXml is a WPF thing? Don't see it in Silverlight.

answered May 26 '10 at 14:43

user298145

43
4

score 0 · Answer 4 · edited Jan 25 '12 at 07:26

0

Blocks cannot be set, they can only be fetched. One way to set the blocks for a RichTextArea is

public static void UpdateRichTextArea(RichTextArea area, string xmlText)
{
    if (area == null)
    return;

    area.Blocks.FillFromXml(xmlText, true);
}

edited Jan 25 '12 at 07:26

stealthyninja

10,343
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answered Apr 06 '10 at 13:55

Rahul N

11
1

Silverlight 4 RichTextBox Bind Data using DataContext

4 Answers4