DataBinding to Calculated Field

Question

I\'m running into a small problem where I\'m trying to bind a DataTextColumn of a DataGrid to a Calculated Field.

WPF

Answer 1

You need to implement the INotifyPropertyChanged on the class. Here is the Example:

public class Person : INotifyPropertyChanged
{
    //public int Id
    //{ get; set; }

    //public string Name { get; set; }

    private int _Id;

    public int Id
    {
        get { return _Id; }
        set { _Id = value;
        RaisePropertyChanged("Id");
        }
    }

    private string _EmpNo
    {
        get
        {
            return Id.ToString() + Name.ToString();
        }
    }

    private string _Name;

    public string Name
    {
        get { return _Name; }
        set
        {
            _Name = value;
            RaisePropertyChanged("Name");
        }
    }

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

    public event PropertyChangedEventHandler PropertyChanged;
}

XAML code:

Test:

public TestWindow()
{
    InitializeComponent();

    this.DataContext = this;
}

private Person _P1 = new Person();

public Person P1
{
    get { return _P1; }
    set { _P1 = value; }
}

private void Button_Click(object sender, RoutedEventArgs e)
{

}

type something in the 2 textboxes..and on the Button click see the value of the person P1 ..u will find the calculated field with the value.. hope it helps u.. Thanks, BHavik