>When entering data, and I reach the end of the available space in a textbox, the focus automatically jumps to the next control in Tab Order. This is often a convenience, but my user is doing some data entry in a "head down" mode and wants control of the field exit by leaving only if "enter" is pressed. The user's data doesn't usually fill the field, so their "enter" approach usually works fine, but when they fill a field then hit enter, they end up skipping a field.
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>How can I block the automatic jump from txtBox to txtBox.

It's controlled by

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