I am using C# and the having problems finding info on how to test for NULL or empty strings and also how to filter with a list.
In C# I could do this to test for empty Strings:
String.IsNullOrEmpty(myValueString)
And I can do this to filter on an array of values:
IList<String> origion = new String[] { "G", "K", "O" };
origion.Contains(myValueString)
How can I do these things in XPath?
Thanks in advance for any help,
Eamonn J.