How to Disable the Focus Rectangle on WPF Controls

When a WPF control gains the focus, it displays a dashed box around itself to indicate that it has the focus. In some cases, the focus rectangle can detract from the design of the program.

To disable this box, add the attribute FocusVisualStyle=”{x:Null}” to a control.

To re-enable it, set that attribute to a Style of your choice.

Editor’s Note: Note this MSDN warning (from the Remarks section):

“Setting this property on individual control styles and not as part of a theme is not the intended usage of this property, because it may lead to a confusing user experience regarding keyboard focus.”

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