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fix(DoubleUpDown): revert to previous value on out-of-range input with ClipValueToMinMax=false

When ClipValueToMinMax=false and the user enters an out-of-range value
then tabs away (UpdateSourceTrigger=LostFocus), the control was silently
truncating digits to bring the value within Min/Max range. For example,
with Max=20000, typing 123456 would set the VM property to 12345 instead
of reverting to the original valid value.

Root cause: The intermediate valid values typed (e.g. 12345) were being
committed to the internal Value property during typing. On LostFocus,
when the final value (123456) was out of range, the text was reverted to
the last committed intermediate value instead of the pre-edit value.

Fix: Save the initial Value on focus gain (_initialValueOnFocus), and
restore it in the SyncTextAndValueProperties catch block when
ClipValueToMinMax=false and the user is not actively typing.

Fixes #1801

pull/1809/head

Harald Daltveit 2 months ago

parent

2c71faba5e

commit

9a90238178

1 changed files with 945 additions and 930 deletions

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1. 1875
     ExtendedWPFToolkitSolution/Src/Xceed.Wpf.Toolkit/Primitives/UpDownBase.cs

1875

ExtendedWPFToolkitSolution/Src/Xceed.Wpf.Toolkit/Primitives/UpDownBase.cs

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