WPF (Vb.net): How to change the application icon dynamically? -

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i'm working on simple application windows (if ask, windows vista+ compatible) , i'd user able change icon of application.

i have 2 icons, 1 old , 1 new, , i'd user able go settings (for example) , check "use old icon" or uncheck it, , depending on chosen option icon of application - shortcut desktop icon, icon in tray bar, icon in alt+tab menu, , on - change 1 chosen.

the application can make change after has been reopened (it's not important show immediatelly).

is possible? or way set icon through project settings before compiling it?

thanks , time!

this works icon , tray
tested - not guess 

this.icon = this.icon = new bitmapimage(new uri(@"myicon.ico", urikind.relative));

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