Whether I’m exploiting an unknown security hole here or not, I do not know. Then from anywhere in my Silverlight code-behind, I can call the NavigateTo(url) method on the invisble hyperlink control to successfully launch the ClickOnce application. I created an invisble instance of MyHyperlinkButton on my Silverlight page. This navigate takes place through a security path different from ().
The NavigateTo method has access to the protected OnClick method of the HyperlinkButton that initiates the navigation. Public Sub NavigateTo( ByVal url As String) To get around this, I subclassed the HyperlinkButton class as shown below: application URL in its NavigateUri property. I guess that is why the HyperlinkButton control works just fine with a. It is caused by security settings preventing the launching of unsafe content from code as opposed to a user-initiated action. The following SilverLight code works to launch a URL, but fails when launchign a.
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