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Hi, and thanks for your reply,<br />
<br />
It look like the setter binding is only supported in WPF... And did not mention that I used SL4 in the above question. This method would do what I wanted. I looked at some other posts with work around but they seem very complicated...<br />
<br />
Do you have any other sources of help that could tell me how ?
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<br />
For Silverlight, as a workaround, you can check this post about SetterValueBindingHelper &nbsp;:<br />
<a href="http://blogs.msdn.com/b/delay/archive/2009/11/02/as-the-platform-evolves-so-do-the-workarounds-better-settervaluebindinghelper-makes-silverlight-setters-better-er.aspx" rel="ugc">http://blogs.msdn.com/b/delay/archive/2009/11/02/as-the-platform-evolves-so-do-the-workarounds-better-settervaluebindinghelper-makes-silverlight-setters-better-er.aspx</a><br />
<br />
Another solution might be here :<br />
<a href="http://forums.silverlight.net/forums/p/177138/399811.aspx" rel="ugc">http://forums.silverlight.net/forums/p/177138/399811.aspx</a><br />
<br />
Glad to help.
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I have a treeview which is bound to an observable collection.<br />
After I insert an element in the collection it appears in my treeview.<br />
Since the collection is of base type INotifyPropertyChanged the treeview methods are no longer available.<br />
I want to be able to set &quot;IsSelected&quot; from code behind.<br />
What is the best way to do this?
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I have a treeview which is bound to an observable collection.
After I insert an element in the collection it appears in my treeview.
Since the collection is of base type INotifyPropertyChanged the treeview methods are no longer available.
I want to be able to set "IsSelected" from code behind.
What is the best way to do this?

programmatically select and expand treeviewItem when bound to a collection

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