String.ToDouble in iOS doesn't use Locale.current

[Horst_Jehle]

When I try to create a double value from a string I got only an integer value when the separator is a comma.

Var xValue As Double

xValue = tfText.Text.ToDouble
system.DebugLog “Value=” + xValue.ToString

tfDouble.Text = xValue.ToString(Locale.Current, “0.0”)

Console log:

If I do this on macOS everything is okay.

Console log:

[Ulrich_Bogun]

Did you check your locales are identical? Simulator might have a standard locale.

[Horst_Jehle]

Yes, everything is set to German.

Testing on iPad Pro M4 iOS 26.1.0

Same problem like in simulator.

Tested on iPhone SE, iOS 15.8.5, the same problem.

[Ulrich_Bogun]

Oh yes, missed that point on first reading. You are reading the double value without locale initially, so no wonder it’s not taken into respect. Try

Var xValue As Double

xValue = Double.FromString(fText.Text, locale.current)
system.DebugLog “Value=” + xValue.ToString

tfDouble.Text = xValue.ToString(Locale.Current, "0.0")

(Edited for correct code)

[Horst_Jehle]

Thanks for this hint. Now it works fine.