how to change the default FontFamily for the RadRichTextBox?

[ji]

<telerik:RadRichTextBox.Document >
                    <telerik:RadDocument>
                        <telerik:Section>
                            <telerik:Paragraph FontSize="12" />
                        </telerik:Section>
                    </telerik:RadDocument>
                </telerik:RadRichTextBox.Document>

-----------
this code can not change FontFamily 

[Iva Toteva]

Hi ji,

You can set the FontSize at Paragraph level, but FontFamily, FontWeight, FontStyle and a few other properties are available only at Span level. This is how they can be set:

<telerik:RadRichTextBox >
    <telerik:RadRichTextBox.Document>
        <telerik:RadDocument>
            <telerik:Section>
                <telerik:Paragraph FontSize="14">
                    <telerik:Span FontFamily="Arial Black" FontStyle="Italic" Text="example" />
                </telerik:Paragraph>
            </telerik:Section>
        </telerik:RadDocument>
    </telerik:RadRichTextBox.Document>
</telerik:RadRichTextBox>

If you have any other questions, feel free to get back to us.

All the best,
Iva
the Telerik team

[tj]

Thanks for your reply!

Is there a way to do it code-behind? I tried to set it in the document, but I cannot find the property.

[Iva Toteva]

Hello Tj,

We have planned to introduce properties to change the default font settings in the next official release (in a couple of weeks).
Until then, you can set them in code-behind like this:
For Q2 2010 SP2:

this.Dispatcher.BeginInvoke(() =>
            {
               Span firstSpan = this.radRichTextBox.Document.Sections.First.Paragraphs.First.Inlines.First as Span;
               firstSpan.FontStyle = FontStyles.Normal;
               firstSpan.FontFamily = new System.Windows.Media.FontFamily("Comic sans MS");
               firstSpan.FontSize = 20;
            });

For Q3 2010 Beta:

this.Dispatcher.BeginInvoke(() =>
           {
               Section firstSection = this.radRichTextBox.Document.Sections.First;
               Span firstSpan = (firstSection.Blocks.First as Paragraph).Inlines.First as Span;
               firstSpan.FontStyle = FontStyles.Normal;
               firstSpan.FontFamily = new FontFamily("Comic sans MS");
               firstSpan.FontSize = 20;
           });

This piece of code can be added in your handler of the Loaded event, for example.
If you have any other questions, feel free to contact us again.

Greetings,
Iva
the Telerik team