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INotifyPropertyChanged on indexers

Posted By:      Posted Date: October 01, 2010    Points: 0   Category :WPF

I've a class with an indexer defined into, with its items bound to wpf control.


I'd know what I need to pass to INotifyPropertyChanged event to notify changes on the internal items collection.


Thx a lot!



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PropertyOf and INotifyPropertyChanged.PropertyChanged without strings

When coding applications using design patterns such as MVP (Model-View-Presenter) or MVVM (Model-View-ViewModel), you'll find yourself using data binding and the INotifyPropertyChanged interface all over the place. This means referencing properties quite a lot. For example, when you want to notify that the value of a property has changed, you can write NotifyPropertyChange("SomeProperty") where NotifyPropertyChange is a method that invokes the INotifyPropertyChanged.PropertyChanged event. The major inconvenience of using a string to reference a property name, as in NotifyPropertyChange("SomeProperty"), is that it's a very brittle approach. If the name of the property changes or the property is removed during some refactoring operation on the source code, then it's easy to forget to update all the "string references". Luckily, solutions exist to avoid this kind of issues. infoof => PropertyOf, FieldOf, MethodOf, ConstructorOf We don't have propertyof or infoof operators in C# (see 1, 2, 3 or 4), but we can use things such as PropertyOf thanks to expression trees. You can learn more about such an approach on the C# FAQ blog and Patrick Smacchia's blog. Here is the source code, derived from the above articles, that I use in a utility class: Snippet public static MethodInfo MethodOf<T>(Expression<Func<T>> expression){  var&

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INotifyPropertyChanged isn't raising event


Hi, I'm trying not to create new thread about this topic. When I googled this, I found many links over this topic. I'm so desperate trying to find a solution, so I make a question here. I made a simple CAL / Prism project implementing INotifyPropertyChanged. Here is the link to my project TestProject.zip


<UserControl x:Class="PrismTestProject.Modules.Test.Views.TestView"
	d:DesignHeight="300" d:DesignWidth="300">
		<TextBlock Text="{Binding Path=MyText}" FontSize="20" HorizontalAlignment="Center" TextAlignment="Center" />


View Model

Xml serializing an object that implements INotifyPropertyChanged


Is there any way around this bug, I get the error


System.InvalidOperationException : Unable to generate a temporary class (result=1).
error CS0012: The type 'System.ComponentModel.INotifyPropertyChanged' is defined in an assembly that is not referenced. You must add a reference to assembly 'System, Version=, Culture=neutral, PublicKeyToken=b77a5c561934e089'.


I have tried applying the Attribute [XmlInclude(typeof(INotifyPropertyChanged))] with no luck.

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