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Data-Binding
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Stuart Lodge
May 14, 2013
Technology
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300
Data-Binding
Stuart Lodge
May 14, 2013
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Transcript
Data Binding
INotifyPropertyChanged
Typical ViewModel Property
One Way Binding PersonViewModel FirstName LastName DateOfBirth First Name Jon
Last Name Doe Date of birth 12/07/1989
UI Syntax
Two Way Binding PersonViewModel FirstName LastName DateOfBirth First Name Jon
Last Name Doe Date of birth 12/07/1989
UI Syntax
Value Conversion PersonViewModel FirstName LastName DateOfBirth First Name Jon Last
Name Doe Age 24 “Age” Conversion
IMvxValueConverter
AgeValueConverter
UI Syntax
UI Syntax
Binding Actions PersonViewModel FirstName LastName DateOfBirth First Name Jon Last
Name Doe Date of birth 12/07/1989 AddCommand
ICommand
Typical ViewModel Command
UI Syntax
Collections PeopleViewModel Hackers List<PersonViewModel> Greg Jon Daniel Cool Hackers Jon
@redth Greg @gshackles Daniel @dsplaisted Tomasz Tomasz @cheesebar
INotifyCollectionChanged
ObservableCollection
ViewModel Collection Property
UI Syntax
UI Syntax
UI Syntax
UI Syntax
Data-Binding to Sub-Objects • Works using normal . and []
chaining: • obeys INotifyPropertyChanged at every step
Samples DataBinding: https://github.com/slodge/MvvmCross-Tutorials/tree/master/TipCalc Collections: https://github.com/slodge/MvvmCross- Tutorials/tree/master/Working%20With%20Collections ValueConverters: https://github.com/slodge/MvvmCross- Tutorials/tree/master/ValueConversion