Using expression to pass property names

expression_property_name.cs

// Given the class
class PropertyId {
   public int Id {get;set;}
   public int StateCode {get;set;}
}

var id = new PropertyId { Id = 1, StateCode = "NY" };

// call the method
SetProperty(id => id.StateCode, "CA");

// then on the method declaration
public void SetProperty(Expression<Functor<object>> expr, object value) {

  var member = exp.Body as MemberExpression;

  var name = member.Member.name;
  .
  .
  .
  .
}