DatePicker.Format doesn't work on UWP platform .

[luczha]

I have a DatePicker in my application and I want to display the date in this format : 11/26/2019 So I change the Format property as follow :

myDatePicker.Format = "MM/dd/yyyy"
myDatePicker.Date = DateTime.Now;

Above code works fine on Android and iOS , but on UWP ,the display date got this format : November 26 2019 .

[WayaFlyfeather]

I can confirm that the DatePicker uses a UWP DatePicker, and apparently always uses the default format:

The formatting options for the UWP DatePicker are limited (AFAICT you can't change the order of the the month, day, year), this is determined by the current locale, I believe. Perhaps that's why formatting seems to have been skipped. But it is possible to set the format of the individual items - if month should be shown by name (November) or number (11), for example.

I'd like to look into implementing the parts of the format that could be used in a UWP DatePicker, if desired. I could imagine, though, that it is a change that may bring some layout surprises for those who currently use a format on iOS/Android, but are used to it being the UWP default on UWP.

[luczha]

I had provided customer a workaround
https://stackoverflow.com/questions/59049375/change-datepicker-month-format-in-xamarin

[jfversluis]

Looks like the Format has no effect on UWP indeed. Looking at the code this might never have been implemented to begin with.

Repro8670.zip