Implement Per Property Change Tracking
<p>I am writing a C# app using the MVVM pattern and I was wondering what would be the best way to implement change tracking on a per property basis. I currently have INotofyPropertyChanged implemented and flag whether or not the whole object is dirty, but some of the requirements I have to implement is they want to be able to show an image by the text box on the UI for every property that has been changed.</p>

<p>Basically my View Models all have a private field that is my class containing the data from my DataAccess Layer. So basically a class will look like this:</p>

<pre><code>private BusinessObj _data


public Name
{
    get{ return _data.Name;}
    set
    {
       if(_data.Name != value)
       {
           _data.Name = value;
           PropertyChanged("Name");
           IsDirty = true;
       }
    }
}
</code></pre>

<p>My data access layer is basically serializing and deserializing XAML profiles for configuring our products.</p>
