Fully-qualified property name

Question

I\'m trying to prevent System.NullReferenceException.

I have a Company, which has a collection of Employees. Each Employee has a collection of Skills.

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Answer 1

I don't get it. Why not just:

private void DeleteSelectedSkillFromSelectedEmployee()
{
  if(Company != null &&
     Company.SelectedEmployee != null && 
     Company.SelectedEmployee.Skills != null)
  {           
    Company.SelectedEmployee.Skills.Remove(Company.SelectedEmployee.SelectedSkill);
    EmployeeSkillsListView.ScrollIntoView(Company.SelectedEmployee.Skills.Last());
  }
}

Or in C#6

if(Company?.SelectedEmployee?.Skills != null) 
{
  ...
}

---

If you still want to have that GetFullyQualifiedName method, the nearest you could use could be something like (doesn't check for errors and it's just a quick hack):

public static string GetPathOfProperty<T>(Expression<Func<T>> property)
{
  string resultingString = string.Empty;
  var  p = property.Body as MemberExpression;
  while (p != null)
  {             
    resultingString = p.Member.Name + (resultingString != string.Empty ? "." : "") + resultingString;
    p = p.Expression as MemberExpression;
  }
  return resultingString;           
}

Then use it like:

GetPathOfProperty(() => Foo.Bar.Baz.SomeProperty );

This would return a string containing "Foo.Bar.Baz.SomeProperty"

Check it in a Fiddle