Is it possible to make substring of string as a hyperlink?

if you use 8.1 itss very easy:

     <RichTextBlock>
            <RichTextBlock.Blocks>
                <Paragraph>
                    text 
                    <Hyperlink NavigateUri="http://www.bing.com">hwufhurehfuer</Hyperlink>
                   eowfouwejfew
                </Paragraph>
            </RichTextBlock.Blocks>
        </RichTextBlock>

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Microsoft Certified Solutions Developer - Windows Store Apps Using C#