Data binding to custom object

Question

I have a simple custom class (Person), which I want to bind to a label as a whole (not to separate properties of this class). The label should just present whatever the Person.ToString() returns (in this case FirstName + LastName).

How do I properly bind it using the person as a Source.
How do I make sure that any change in one of the properties of the Person will be reflected in the label?

public class Person : INotifyPropertyChanged {
    private string firstName;
    public string FirstName {
        get { 
           return firstName; 
        }

        set {
            firstName = value;
            OnPropertyChanged("FirstName");
        }
    }

    private string lastName;

    public string LastName {
        get { 
            return lastName; 
        }

        set {
            lastName = value;
            OnPropertyChanged("LastName");
        }
    }

    public override string ToString() {           
        return FirstName + " " + LastName;
    }

    private void OnPropertyChanged(string name) {
        if (PropertyChanged != null) {
            PropertyChanged(this, new PropertyChangedEventArgs(name));
        }
    }

    #region INotifyPropertyChanged Members

    public event PropertyChangedEventHandler PropertyChanged;

    #endregion
}

public Window1() {
myPerson = new Person() {
    FirstName = "AAA",
        LastName = "BBB"};

    InitializeComponent();
}

public Person MyPerson  {
    get { 
        return myPerson; 
    }

    set { 
        myPerson = value; 
    }
}

Label Content="{Binding Source=MyPerson}"

By the way, Source=MyPerson sets the binding source to the string "MyPerson". — brunnerh
– brunnerh, Commented Mar 9, 2012 at 19:29

brunnerh · Accepted Answer · 2012-03-09 18:49:21Z

3

Create a new property FullName which returns the full name and raise PropertyChanged for FullName in the setters of FirstName and LastName as well. You should never bind to the object itself.

answered Mar 9, 2012 at 18:49

brunnerh

188k30 gold badges362 silver badges434 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

NestorArturo Over a year ago

Agree with H.B. You can actually bind to the object it self, but you won't get change notifications.

Collectives™ on Stack Overflow

Data binding to custom object

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related