Version Number of Plugin: 1.4.0
Device Tested On: none
Simulator Tested On: iPhone 13 Pro iOS 15.2
Version of VS: VS for Mac 8.10.19 (build 2)
Version of Xamarin: 5.0.0.2337
Versions of other things you are using:
Steps to reproduce the Behavior
In a simple page, create an Entry and a Label, both bound to the same Validatable(string)'s "Value" member.
Expected Behavior
When writing into the Entry, the Label's text should update automatically.
Actual Behavior
The Label's text is not updated, because "Value"'s setter also sets "ValueFormatted" property which in turn sets the backing field of "Value" and when "Value"'s setter wants to trigger the notify property changed event, it finds out that its own backing field is equal to the new value passed to the setter, so it simply returns false.
prtected bool SetProperty<T>(ref T storage, T value, [CallerMemberName] string propertyName = null)
{
if (EqualityComparer<T>.Default.Equals(storage, value))
{
return false;
}
storage = value;
NotifyPropertyChanged(propertyName);
return true;
}
luismts
commented
2 years ago
Bug Information
Version Number of Plugin: 1.4.0 Device Tested On: none Simulator Tested On: iPhone 13 Pro iOS 15.2 Version of VS: VS for Mac 8.10.19 (build 2) Version of Xamarin: 5.0.0.2337 Versions of other things you are using:
Steps to reproduce the Behavior
In a simple page, create an Entry and a Label, both bound to the same Validatable(string)'s "Value" member.
Expected Behavior
When writing into the Entry, the Label's text should update automatically.
Actual Behavior
The Label's text is not updated, because "Value"'s setter also sets "ValueFormatted" property which in turn sets the backing field of "Value" and when "Value"'s setter wants to trigger the notify property changed event, it finds out that its own backing field is equal to the new value passed to the setter, so it simply returns false.
Removing "return false" fixes the issue.