https://learn.microsoft.com/en-us/dotnet/api/system.windows.forms.errorprovider.seterror?view=windowsdesktop-10.0
ErrorProvider.SetError(Control, String) Method (System.Windows.Forms) | Microsoft Learn
Sets the error description string for the specified control.
windows formscontrolstringmethodsystem
https://pub.dev/documentation/ezbloc_flutter/latest/ezbloc_flutter/Bloc/setError.html
setError method - Bloc class - ezbloc_flutter library - Dart API
API docs for the setError method from the Bloc class, for the Dart programming language.
methodblocclassflutterlibrary