V was only shown when the value wasn't empty AND a value wasn't required.

I think it's sufficient to omit V when the field is empty;
the extra constraint that the field may not be required is too strict.

git-svn-id: svn://svn.code.sf.net/p/itextsharp/code/trunk@7 820d3149-562b-4f88-9aa4-a8e61a3485cf

src/core/iTextSharp/text/pdf/TextField.cs

@@ -370,7 +370,7 @@ namespace iTextSharp.text.pdf {
                 field.MKRotation = rotation;
             if (fieldName != null) {
                 field.FieldName = fieldName;
-                if ((options & REQUIRED) == 0 && !"".Equals(text))
+                if (!"".Equals(text))
                     field.ValueAsString = text;
                 if (defaultText != null)
                     field.DefaultValueAsString = defaultText;