How to implement textbox similar to facebook textbox in privacy settings where you can add to textbox custom controls:

One of the way that i came to is to create wrappanel where last item will be textbox.
Are there any other ways?
Thanks.
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that’s the only thing that comes to my mind… just have a stackpanel (wrappanel) and add items from left to right where the last one is the actual textbox…place everything in a nice canvas add some border and set the margins of the textbox to 0 so that it will fill up all the space if there is no other control in it…
it looks like it’s not that big of a problem:)