Question

Is it possible to get a unique identifier of a property from within its accessors?

class Foo
{
    int Bar
    {
        set
        {
            string nameOfThisProperty = X; // where X == "Bar" or any unique value
        }
    }
}

If so, how?

Update:

The reason I’m asking is: I want some some consistent unique value identifying the property in which the code is executing to avoid having to declare one myself as I’m doing right now:

Dictionary<string, RelayCommand> _relayCommands 
    = new Dictionary<string, RelayCommand>();

public ICommand SomeCmd
{
    get
    {
        string commandName = "SomeCmd";
        RelayCommand command;
        if (_relayCommands.TryGetValue(commandName, out command))
            return command;
        ...

Answer 1

You could use reflection:

[MethodImpl(MethodImplOptions.NoInlining)]
set
{
    string name = MethodBase.GetCurrentMethod().Name;
    // TODO: strip the set_ prefix from the name
}

As pointed out in the comments section the setter could be inlined so it must be decorated with the [MethodImpl] attribute to prevent the JITer from doing so.

Also you will have to strip the set_ prefix from the method name because name will equal set_Bar.

So:

string name = MethodBase.GetCurrentMethod().Name.Substring(4);