wpf error template - red box still visible on collapse of an expander
- by Andy Clarke
Hi,
I'm doing some validation on the DataSource of TextBox that's within an Expander and have found that once a validation error has been triggered, if I collapse the Expander, the red box stays where the TextBox would have been.
<Expander Header="Blah Blah Blah">
<TextBox Name="TextBox"
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