How to use TimeSpan string format in code in Xamarin.Forms?

Question

I am using a Label in Xamarin.Forms in code like so:

var label = new Label();
label.SetBinding(Label.TextProperty, new Binding("Time", stringFormat: "{}{0:hh\\:mm}", mode: BindingMode.TwoWay, source: this));

But this returns the error:

System.FormatException: Input string was not in a correct format.

But this works in Xaml:

 <Label Text="{Binding StartTime, StringFormat='{}{0:hh\\:mm}'}}"/>

How do I use string format on a binding for TimeSpan in Xamarin.Forms?

Does this work for you https://stackoverflow.com/a/4563472/3185569 ? It seems you don't need `{}` as these as specific to XAML. — Zein Makki, Jun 30 '17 at 11:07
@user3185569 I specifically need it in code, and Xamarin.Forms sorry — JKennedy, Jun 30 '17 at 11:10

score 4 · Accepted Answer · answered Jun 30 '17 at 11:08

Xamarin Forms uses all the basic string.Format options you would normally use. So for a datetime the stringFormat variable would look like this:

"{0:MM/dd/yy H:mm:ss zzz}"

The additional pair of brackets in your format string seem out of place to me. You could try the following for what you're trying to achieve here:

@"{0:hh\:mm}"

score 0 · Answer 2 · edited Feb 05 '21 at 17:16

0

StringFormat='{}{0:hh\\:mm\\:ss}'

edited Feb 05 '21 at 17:16

Cananau Cristian

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answered Feb 05 '21 at 14:57

Joerg Gullus

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How to use TimeSpan string format in code in Xamarin.Forms?

2 Answers2