Improving the INotifiedPropertyChanged implementation

As you may have noticed from previous projects, our standard property implementation for handling property changes looks like the following:

private string _descriptionMessage = "Take a Picture";  
 
public string DescriptionMessage 
        { 
            get 
            { 
                return _descriptionMessage; 
            } 
 
            set 
            { 
                if (value.Equals(_descriptionMessage)) 
                { 
                    return; 
                } 
 
                _descriptionMessage = value; 
                OnPropertyChanged("DescriptionMessage"); 
            } 
        } 

The repeated code in every public property makes our view-model code look much bigger than it actually is. In all your code sheets, a good coding practice to think about is how you can reduce the amount of lines of code and, especially repeated code. The following function SetProperty is an example of...