Get list of properties from List of objects

You could use LINQ:

List<X> Z = GetXlist();

List<String> r = Z.Select(z => z.A).ToList();

return r;

Or just,

return GetXlist().Select(z => z.A).ToList();

Find out more about LINQ. It is pretty useful.

LINQ is the answer. You can use it to "project" from your object collection to another collection - in this case a collection of object property values.

List<string> properties = objectList.Select(o => o.StringProperty).ToList();