WPF Datagrid set the column values only when the row is left

Question

Hello

I have a simple class. When I use it in winforms binding, whenever I change a value of a cell and leave the cell, the property immediately get changed. Using WPF Datagrid, whenever i change a value of a cell, the property gets set only after I leave the row. That is problematic for me. What am I doing wrong?

Here is my code:

public class MyClass : IEditableObject, INotifyPropertyChanged
{
    string _name, _lastName;
    public string Name
    {
        get { return _name; }
        set
        {
            _name = value;
            _lastName = value + " xxx";
            OnPropertyChanged("LastName");
            MessageBox.Show("Test");

        }
    }

    private void OnPropertyChanged(string p)
    {
        var x = new PropertyChangedEventArgs(p);
        if (PropertyChanged != null)
            PropertyChanged(this, x);
    }
    public string LastName { get { return _lastName; } set { _lastName = value; } }

    public void BeginEdit()
    {
    }

    public void CancelEdit()
    {
    }

    public void EndEdit()
    {
    }
    public event PropertyChangedEventHandler PropertyChanged;
}
public class myBindingList : BindingList<MyClass>
{
    public myBindingList()
    {
        AllowNew = true;
        Add(new MyClass { Name = "noam" });
        Add(new MyClass { Name = "yael" });
    }
}