Generate custom setter using attributes

Question

In classes whose instances I persist using an object database, I keep having to do this:

private string _name;
public string Name
    {
    get { return this._na         


        

Answer 1

Not easy to implement using attributes IMO. Maybe you could use another approach, such as an extension method:

// Extension method that allows updating a property
// and calling .Save() in a single line of code.
public static class ISaveableExtensions
{
    public static void UpdateAndSave(
        this ISaveable instance,
        Expression> propertyExpression, T newValue)
    {
        // Gets the property name
        string propertyName = ((MemberExpression)propertyExpression.Body).Member.Name;

        // Updates its value
        PropertyInfo prop = instance.GetType().GetProperty(propertyName);
        prop.SetValue(instance, newValue, null);

        // Now call Save
        instance.Save();
    }
}
...
// Some interface that implements the Save method
public interface ISaveable
{
    void Save();
}
...
// Test class
public class Foo : ISaveable
{
    public string Property { get; set; }

    public void Save()
    {
        // Some stuff here
        Console.WriteLine("Saving");
    }

    public override string ToString()
    {
        return this.Property;
    }
}
...
public class Program
{
    private static void Main(string[] args)
    {
        Foo d = new Foo();

        // Updates the property with a new value, and automatically call Save
        d.UpdateAndSave(() => d.Property, "newValue");

        Console.WriteLine(d);
        Console.ReadKey();
    }
}

It's type-safe, autocompletion-friendly, but it requires more code than just .Save() in all setters, so not sure I would use it actually...