WPF rendering problem

Suddenly my wpf application showing forms which i am showing as Dialog are crashing (not showing properly)

http://tinypic.com/view.php?pic=2r26pft&s=7

any idea how to restart wpf rendering engine?

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I am closing this question:

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I don't the exact problem but I create my login UI from scratch by putting the same old xaml 开发者_运维百科and now it is working as it should, GOD bless Microsoft! :)

http://i56.tinypic.com/2ex0u2s.png

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looks like some serious dropshadow!!!

with that style every border gets a dropshadow. I doubt that is what you want. try removing it!

(I mean that style: <Style TargetType="Border"> ...)