Showing emoji in C# windows app using style-background url()

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C#

WPF

hello everyone
Is there a way to use style-background url() in wpf web-browser..
currently i have to change it in

HTML

<img src="url goes here">

which is not a correct way

I am trying to build a c# app which uses API to get data which is entered by some random person on website using froala online editor which provide emoji support. I am storing data in HTML format in db it gives me image as but emojis as

<span class=\"fr-emoticon fr-deletable fr-emoticon-img\" style=\"background: url(https://cdnjs.cloudflare.com/ajax/libs/emojione/2.0.1/assets/svg/1f601.svg);

I can not search for span in string for URL's as content may be large and user may enter some valid URL also..

I want to show those emojis in my app.

What I have tried:

i tried using some libraries of nuget but not successful. :(