.net - Scroll Position GUI with Silverlight -

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i have text chat application developed in silverlight. app polling server every 2 seconds incoming data , thats when set scroll bar's position last message.

there fishy scroll bar's position cannot understand. have hosted app here, http://bit.ly/h2yopt

can please me work out scroll position.

ps: please try entering message , move scroll bar.

thank you.

it looks if scrollbar moved down every 2 seconds. show code.


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