[Solved] Can't set the LayoutMode in a style

[Patrick]

Hello,
when trying to set the LayoutMode dependency property of a RadRichTextBox using a style, the application crashes.

Test case:
1. Create a new Silverlight application.
2. Replace MainPage.xaml with:

<UserControl
  x:Class="SilverlightApplication2.MainPage"
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
  xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
  xmlns:tk="http://schemas.telerik.com/2008/xaml/presentation"
  mc:Ignorable="d"
  d:DesignHeight="300" d:DesignWidth="400">

  <Grid x:Name="LayoutRoot" Background="White" Margin="5">

    <Grid.Resources>
      <Style TargetType="tk:RadRichTextBox">
        <Setter Property="LayoutMode" Value="Flow" />
      </Style>
    </Grid.Resources>

    <tk:RadRichTextBox />

  </Grid>
</UserControl>

3. Run

If you comment the style definition, the application runs correctly.

Patrick

[Patrick]

Hello,
same problem with the IsSpellCheckingEnabled dependency property.
Patrick

[Vasil]

Hello Patrick,

Thank you for your question.

LayoutMode is a nullable property (of type DocumentLayoutMode?) and for some reason it cannot be set through a style using the "normal" syntax, even though it usually shows in the designer.

However, you can set it like this:

<Style TargetType="telerik:RadRichTextBox">
    <Setter Property="LayoutMode">
        <Setter.Value>
            <telerik:DocumentLayoutMode>Flow</telerik:DocumentLayoutMode>
        </Setter.Value>
    </Setter>
    <Setter Property="IsSpellCheckingEnabled" Value="False"/>
</Style>

We didn't observe any issues with the property IsSpellCheckingEnabled. I hope this helps!

All the best,
Vasil
the Telerik team