DevForce Community Forum : propertychanged event for mvvm http://www.ideablade.com/forum/ This is an XML content feed of; DevForce Community Forum : DevForce 2010 : propertychanged event for mvvm Tue, 21 Apr 2026 15:51:05 -700 Fri, 23 Jul 2010 15:08:39 -700 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 9.69 360 www.ideablade.com/forum/RSS_post_feed.asp?TID=2002 DevForce Community Forum http://www.ideablade.com/forum/forum_images/IdeaBlade_logo_tm.png http://www.ideablade.com/forum/ propertychanged event for mvvm : The PropertyChanged events do... http://www.ideablade.com/forum/forum_posts.asp?TID=2002&PID=7790#7790 Author: ting
Subject: 2002
Posted: 23-Jul-2010 at 3:08pm

The PropertyChanged events do not fire when the entity is in a detached state (this is the state a new entity is in before adding it to an EntityManager).  Once you call entityManager.AddEntity(myEmployee) it will start firing.

]]> Fri, 23 Jul 2010 15:08:39 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2002&PID=7790#7790 propertychanged event for mvvm : Ok it seems it is firing for edits... http://www.ideablade.com/forum/forum_posts.asp?TID=2002&PID=7788#7788 Author: hueha
Subject: 2002
Posted: 23-Jul-2010 at 1:59pm

Ok it seems it is firing for edits when I load the object from the database but not when it's fresh new object.  Is this a bug?]]> Fri, 23 Jul 2010 13:59:01 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2002&PID=7788#7788 propertychanged event for mvvm : I'm trying to implement... http://www.ideablade.com/forum/forum_posts.asp?TID=2002&PID=7787#7787 Author: hueha
Subject: 2002
Posted: 23-Jul-2010 at 1:47pm

I'm trying to implement mvvm in my class.  I want to catch the propertychanged event in the entity class and bubble it up.

Using your simplecombobox project as an example I added the following class to the simplecombodemo project.  Am I catching the propertychanged event correctly?  Because I am not getting the propertychanged event when I do Class1.Employee.Address="abc"


using System;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Ink;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.ComponentModel;
using IdeaBlade.EntityModel;

namespace SimpleComboDemo
{
    public class Class1
    {
        private Employee myEmployee;
        public string propname;
        public Employee Employee
        {
            get { return myEmployee; }
        }

        public Class1()
        {
            myEmployee = new Employee();
            myEmployee.PropertyChanged += new PropertyChangedEventHandler(MyCust_PropertyChanged);
        }
        private void MyCust_PropertyChanged(object sender, PropertyChangedEventArgs e)
        {
            var propchange = e.PropertyName;
        }
    }
}




Edited by hueha - 23-Jul-2010 at 1:50pm]]> Fri, 23 Jul 2010 13:47:37 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2002&PID=7787#7787