Set 24-hour time format for TimePicker

Question

I'm building an MVVM Light WPF app in Visual Studio 2015 using the Material Design in XAML Toolkit. Here's the TimePicker control:

<materialDesign:TimePicker Is24Hours="True" />

Here's what the control looks like when you click it:

Note that it shows the time in 24-hour format correctly. However, when you select that time and return to the field, it displays it as non-24-hour time, with AM/PM:

Is there any way to force the control to display the time in 24-hour format? Thanks.

Answer 1

As of 1.5 you can't explicitly enforce it:

You can use SelectedTimeFormat (long/short) e.g.

<materialDesign:TimePicker Is24Hours="True" SelectedTimeFormat="Long" />

But, this picks up the Windows regional setting short/long formats, so it depends on the local PC.

I guess I can add an override for a future release...