c# - How to handle NullReferenceException in a foreach? -

foreach (string s in myfield.getchilds()) {     if (s == null)         //handle null     else         //handle normal value  } 

when run program nullreferenceexception because getchilds may return null. how can make program continue anyway , handle exception? can't handle outside of foreach, can't explain why because take time (and sure guys busy :p). ideas?

i tryed way:

foreach (string s in myfield.getchilds() ?? new arraylist(1)) {         if (s == null)             //handle null         else             //handle normal value      } 

but not work, program jump @ end of foreach want enter foreach instead!

one way (though not best way) is:

foreach (string s in myfield.getchilds() ?? new string[] { null }) 

or

foreach (string s in myfield.getchilds() ?? new arraylist { null }) 

the reason new arraylist(1) doesn't work creates list has capacity hold 1 element, still empty. new string[] { null } creates string array single element null, appear want.