Combobox INotifyPropertyChanged event not raised!!!
- by nagiah
I created a combobox and set observable collection as the itemsource and implemented INotifyPropertyChanged on the observable collection item. Even after that, when I select different item in the combobox, the OnPropertyChange method is not invoked. I think I am not making the binding properly. Could any one please correct me/ suggest me in this regard.
---------------------------------MainPage.xaml---------------------------------------------------
<StackPanel Width="300">
<ComboBox Name="cboName"></ComboBox>
<TextBox Name="tbxName" Text="{Binding Path=name,Mode=TwoWay,ElementName=cboName}" ></TextBox>
</StackPanel>
---------------------------MainPage.xaml.cs-----------------------------------------------
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.Collections.ObjectModel;
using System.Collections.Specialized;
using System.ComponentModel;
namespace MasterDetailsUpdate
{
public partial class MainPage : UserControl
{
public MainPage()
{
InitializeComponent();
Loaded += new RoutedEventHandler(MainPage_Loaded);
}
void MainPage_Loaded(object sender, RoutedEventArgs e)
{
ObservableCollection<Person> persons = new ObservableCollection<Person>();
persons.Add(new Person { city = "c1", name = "n1" });
persons.Add(new Person { city = "c2", name = "n2" });
persons.Add(new Person { city = "c3", name = "" });
persons.Add(new Person { city = "c4", name = "" });
persons.Add(new Person { city = "c5", name = "n1" });
cboName.ItemsSource = persons;
cboName.DisplayMemberPath = "name";
}
}
public class Person : INotifyPropertyChanged
{
private string _name;
private string _city;
public string name
{
set
{
_name = value;
OnPropertyChanged("name");
}
get
{
return _name;
}
}
public string city
{
set
{
_city = value;
OnPropertyChanged("city");
}
get
{
return _city;
}
}
#region INotifyPropertyChanged Members
public event PropertyChangedEventHandler PropertyChanged;
private void OnPropertyChanged(string propertyName)
{
if (PropertyChanged != null)
{
this.PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
}
#endregion
}
}
Thank You
