quick function for converting expression strings into objects ex: "Account.Manager.Name", "Roberta" ==> new Account { new Manager { Name = "Roberta" } }

gistfile1.cs

  private object Eval(KeyValuePair<string, object> df)
  {
    var properties = df.Key.Split('.');
    object root = Activator.CreateInstance(Assembly.GetExecutingAssembly().GetTypes().First(t => t.Name == properties.First()));

    var temp = root;
    
    for (int i = 1; i < properties.Length - 1; i++)
    {
      var propertyInfo = temp.GetType().GetProperty(properties[i]);
      var propertyInstance = Activator.CreateInstance(propertyInfo.PropertyType);                
      propertyInfo.SetValue(temp, propertyInstance, null);
      temp = propertyInstance;
    }

    temp.GetType().GetProperty(properties.Last()).SetValue(temp, df.Value, null);

    return root;
  }