inotifypropertychanged

I need to define new UI Elements as well as data binding in code because they will be implemented after run-time. Here is a simplified version of what I am trying to do. Data Model: public class AddressBook : INotifyPropertyChanged { private int _houseNumber; public int HouseNumber { get { return _houseNumber; } set { _houseNumber = value; NotifyPropertyChanged("HouseNumber"); } } public event PropertyChangedEventHandler PropertyChanged; protected void NotifyPropertyChanged(string sProp) { if (PropertyChanged != null) { PropertyChanged(this, new PropertyChangedEventArgs(sProp)); } } } Binding

Have a bunch of ObservableCollection<MeClass> Result and require to combine them all into another ObservableCollection<MeClass> AllResults so I can display it in a listview . Just not sure how to combine them all in one. I Created a new class to combine them all but not sure how they will get updated after I got the list once... So not really sure which direction to take. I know about INotifyPropertyChanged I'm just not sure how to combine them all and keep updating as everything changes. .NET has a CompositeCollection that allows you to treat multiple collections as a single collection. It

I have a datagrid which is bound to ObservableCollection<Product> . When the grid is updated this automatically updates the Product object in my collection. What I want to do now is to have some sort of even that is triggered when any object in the collection is updated -or- some sort of binding to the collection that will return true/false depedant on if any Product has been updated. The overall objective is to have a save button on my main window that is disabled if no changes have been made to my collection and enabled if changes have been made. I have read into INotifyPropertyChange but I

In MVVM pattern, how to notify all properties of the view model has changed? I don' t want to call all notifypropertychanged event of all properties. I have an entity class and in view model I wrote all of the public fields of the entity as public properties. I want to rebind new entity and just write a single line of code to notify that all properties has changed? Thanks for your help. Just raise the PropertyChanged event with an empty string as the property name : OnPropertyChanged(String.Empty); Ok what I understood from your question is this.. View <> ViewModel <> Entity (with a bunch of

Let's say in some abstract ViewModel base-class I have a plain-old property as follows: public Size Size { get { return _size; } set { _size = value; OnPropertyChanged("Size"); } } I then create a more specific ViewModel, inheriting from the previous one, which contains the following property: public Rect Rectangle { get { return new Rect(0, 0, _size.Width, _size.Height); } } Now, in some View class I bind to the aforementioned ViewModel's Rectangle property. Everything works fine, until I change the size. When Size changes, Rectangle doesn't know about it and the change doesn't propagate to

What is the best way in c# to notify property changed on an item's field without set but get depends on other fields ? For example : public class Example : INotifyPropertyChanged { private MyClass _item; public event PropertyChangedEventHandler PropertyChanged; public MyClass Item { get { return _item; } protected set { _item = value; OnPropertyChanged("Item"); } } public object Field { get { return _item.Field; } } #if !C#6 protected void OnPropertyChanged(string propertyName) { PropertyChangedEventHandler handler = PropertyChanged; if (handler != null) { handler(this, new